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0 | P A G E
R. Ambrocio St., Townsite, Limay, Bataan (047) 244 5274 | [email protected]
WATER SAFETY PLAN LIMAY WATER DISTRICT
1 | P A G E
Contents INTRODUCTION .................................................................................................................................................. 2
A. BACKGROUND ..................................................................................................................... 2
B. LEGAL BASIS ......................................................................................................................... 2
C. VISION, MISSION, PERFORMANCE PLEDGE .................................................................... 3
D. LIWAD WSP AND ITS OBJECTIVES .................................................................................... 3
I. WATER SAFETY PLAN TEAM ........................................................................................................................... 5
A. TEAM CHART ........................................................................................................................... 5
B. FUNCTIONS .............................................................................................................................. 6
II. LIMAY WATER DISTRICT WATER SUPPLY SYSTEM ................................................................................. 10
A. GROUND WATER SOURCES ............................................................................................... 11
B. TREATMENT ........................................................................................................................ 13
C. DISTRIBUTION .................................................................................................................... 13
D. WATER PROCESS ................................................................................................................ 14
E. STAKEHOLDERS .................................................................................................................. 15
III. HAZARD IDENTIFICATION AND RISK ASSESSMENT............................................................................. 17
A. GROUNDWATER ............................................................................................................... 20
B. DISTRIBUTION .................................................................................................................... 21
IV. DETERMINE AND VALIDATE CONTROL MEASURES, REASSESS AND PRIORITIZE THE RISKS ...... 22
A. GROUNDWATER ................................................................................................................. 23
V. IMPROVEMENT / UPGRADE PLAN ........................................................................................................... 25
A. GROUNDWATER .................................................................................................................25
B. DISTRIBUTION ....................................................................................................................25
VI. MONITORING OF CONTROL MEASURES ................................................................................................ 26
A. GROUNDWATER ................................................................................................................ 26
b. DISTRIBUTION ................................................................................................................... 26
VII. VERIFICATION............................................................................................................................................. 27
A. Internal Checking of activities .............................................................................................27
B. CONSUMER SATISFACTION ..............................................................................................27
VIII. SUPPORTING PROGRAMS ........................................................................................................................ 28
IX. PERIODIC REVIEW .......................................................................................................................................29
ABBREVIATIONS ................................................................................................................................................ 30
2 | P A G E
INTRODUCTION
A. BACKGROUND
The Limay Water District (LIWAD) was formed under the local Sangguniang Bayan Resolution No.
161 in November 1988. Thereafter, a Deed of Transfer for the existing water supply system facilities
including the right-of-way and sites was given by the local government to the newly formed Water District.
In December 1988, LIWAD started its operation under the management of General Manager Ernesto
Enriquez. The Local Water Utilities Administration (LWUA) granted a loan of about ₱ 1,107,295 as financial
assistance for the rehabilitation of the existing water supply system, start-up costs and training of
employees. A ₱ 100,000 grant was also extended to the District after being affected by the 1990 earthquake.
A separate water system serving Brgy. Lamao located about 6 km south of town proper was
reportedly constructed in 1987 and was then operated by the Barangay Council. In November 1990, the
Lamao water system was turned over to LIWAD. The system consisted of one deep well source, one
elevated tank, and a pipe distributed system. The independent water system initially gave 474 additional
service connections to the District.
B. LEGAL BASIS
By virtue of Presidential Decree 198 known as the Provincial Water Utilities Act of 1973, the
Municipal Board of Limay through the Local Water Utilities Administration passed a resolution on
November 4, 1988 creating the Limay Water District.
A Conditional Certificate of Conformance (CCC No. 379) was issued by LWUA formally
establishing the water district on November 25, 1988. Consequently, the Municipal Government turned
over to LIWAD the control and supervision of the municipal water supply system.
3 | P A G E
C. VISION, MISSION, PERFORMANCE PLEDGE
OUR VISION . . .
A Water District composed of competent and dedicated workers working together to provide quality
service to the people of Limay, Bataan to ensure that every resident in the community will have access to a
safe and sustainable water supply at the lowest possible cost.
OUR MISSION . . .
To provide residents with safe, adequate, potable and economically viable water service 24 hours a day.
OUR PERFORMANCE PLEDGE. . .
We, the officials and employees of the Limay Water District commit ourselves to provide safe, potable and
adequate water supply to every resident of the community at the least possible cost.
D. LIWAD WSP AND ITS OBJECTIVES
Water Safety Plan (WSP) is an internationally recognized comprehensive risk based approach to
attain safe water. Considered as the best practice in the industry, WSP is an effective means to consistently
ensure the safety of a drinking-water supply. This is attained through a risk assessment process and risk
management approach that encompasses the entire stage in the supply of water from catchment to
consumer.
Hence, as mandated by the Department of Health’s (DOH) Administrative Order 2014-0027 which
declares the development and implementation of Water Safety Plan (WSP) by all drinking- water service
providers and as required by the LWUA Memorandum Circular No. 010.14, the management of Limay
Water District assembled a team represented by all its Divisions to develop and monitor LIWAD WSP.
The WSP will focus on monitoring the safety of water from the source to LIWAD’s existing
concessionaires. Included in the WSP is the protection of the water sources, pumps and distribution
4 | P A G E
pipelines from risks that will endanger the quality of water being delivered to the concessionaires.
Specifically, the WSP aims to:
o develop an understanding of the complete water system and its capability to supply water that
meets health-based targets;
o identify potential sources of contamination and how it can be controlled;
o validate control measures employed to control hazards;
o implement a scheme to monitor the control measures within the water system;
o conduct timely corrective actions to ensure the consistent supply of safe water; and
o verify the drinking-water quality, ensuring that the WSP is properly implemented and attaining
the required performance to meet applicable national, regional and local water quality standards
or objectives.
5 | P A G E
ENGR. ANTHENOR R. GARCIA
TEAM LEADER
JUNE V. MAÑAOL
SOURCE AND TREATMENT
JOMEL ESCOTO
SOURCE AND TREATMENT
MARK A. GARCIA
SOURCE AND TREATMENT
REYNALDO C. EBON
DISTRIBUTION
MARVIN D. LACE
DISTRIBUTION
BOBBY CONSTANTINO
SECRETARIAT
RUBY P. TIAMBENG
SECRETARIAT
I. WATER SAFETY PLAN TEAM
LIWAD Safety Plan team is composed of various individuals with expertise in their respective field and
with capability to develop, implement and monitor the Water Safety Plan. Each individual possesses
competencies that can contribute to the effective attainment of the goals and objective set forth in the
plan.
A. TEAM CHART
6 | P A G E
B. FUNCTIONS
NAME DIVISION DESIGNATION WSP TEAM
RESPONSIBILITY
TASK DESCRIPTION
ANTHENOR R. GARCIA GENERAL
MANAGER
WSP TEAM
LEADER
Over sees the following:
• Production, quality
control/monitoring,
storage and
distribution of safe
and potable water to
consumers
• Operation,
safeguarding and
maintenance of
production, treatment
and storage facilities/
appurtenances of
LIWAD
JUNE V. MAÑAOL
ENGINEERING OPERATOR SOURCE AND
TREATMENT
Responsible for the:
• Operation,
safeguarding and
maintenance of
equipment,
appurtenances,
structures and grounds
on all Deep Well and
Pumping Stations.
• Maintenance of
adequate supply of safe
and potable water at
the distribution system
• Application of
chemicals at deep well
sources and assists in
the implementation of
7 | P A G E
other water quality
management programs
REYNALDO C. EBON ENGINEERING MAINTENANCE
FOREMAN DISTRIBUTION
• Directs the operation
and safeguarding of
deep well sources, lift,
booster stations,
reservoir stations and
other distribution
system appurtenances
• Coordinates with the
Maintenance and
support Services Group
with regard to the
maintenance of
equipment, facilities
and appurtenances
• Assists in the evaluation
of existing systems and
submits appropriate
recommendations
BOBBY B.
CONSTANTINO ADMINISTRATIVE
SUPERVISING
SUPPLY/
PROPERTY
OFFICER
SECRETARIAT
• Supervises and assists
in the following
activities of the Section:
a. project
implementation,
b. work
interconnection,
c. preparation of
program works
• Prepares and updates
program of works
• Submits reports and
communications to
superiors as to the
status and
accomplishment of the
project.
- Maintains availability
and orderliness of
8 | P A G E
materials and
equipment for the
project
JOMEL L. ESCOTO ENGINEERING OPERATOR SOURCE AND
TREATMENT
• Operates pumping
units and water
treatment equipment
within jurisdiction to
maintain adequacy and
safety of water supply.
• Monitors, checks and
records all meter
readings and other
related data and
accomplishes daily
operation records.
• Controls distribution
valves to meet water
supply schedule and
facilitates mainline leak
repair.
• Conducts routine
chlorine residual
monitoring and checks
water supply schedule
on selected points of
the distribution system.
• Logs important
events/abnormalities
during tour of duty and
informs superiors if
necessary.
• Attends to customer
complaints/requests
MARVIN D. LACE
ENGINEERING
STOREKEEPER
DISTRIBUTION
• Inspects and estimates
all applicants for New
Connections, Mainline
Disconnection and
Mainline Reconnection
9 | P A G E
• Supervises the
restoration of all
damage roads,
pavement and other
facilities affected by the
implementation of all
WD utility projects and
repairs
• Monitors and submits
reports on the status of
the actual construction
of the water supply
system of subdivisions
turned-over to the WD
RUBY P. TIAMBENG
ADMINISTRATIVE
ADMIN STAFF
SECRETARIAT
• Prepares reports,
correspondences,
memoranda and other
needed documents
• Files and maintains
records of all
correspondences and
reports.
• Prepares and
dispatches requests of
the team needed for
the operation
• Performs other
function that maybe
assigned from time to
time
10 | P A G E
II. LIMAY WATER DISTRICT WATER SUPPLY SYSTEM
LIWAD covers all 12 barangays, with 23 pumping stations spread out within the town of Limay. These
pump stations comprise the nine (9) independent water systems that brings tap water to households,
commercial establishments and offices.
11 | P A G E
SOURCE PUMPING STATION NO.
LOCATION OPERATING SCHEDULE AVE. CAPACITY m³ /day
1 NATIONAL ROAD REFORMISTA
24 HOURS A DAY 1488
2 TUNDOL 17 HOURS A DAY 413
3 NATIONAL ROAD ST. FRANCIS II
24 HOURS A DAY
4 ST FRANCIS II 21 HOURS A DAY 629
5 MAMALA, BLISS 24 HOURS A DAY 120
6 ST. FRANCIS VILLAGE- HI WAY
24 HOURS A DAY 201
7 SAN JOSE, DUALE 23 HOURS A DAY 1521
8 ISIDRO, SUBDIVISION 24 HOURS A DAY 146
9 TOWNSITE MAIN 24 HOURS A DAY 1128
10 ST. FRANCIS II DUALE UPPER 23 HOURS A DAY 1083
11 IMMACULATE-BLISS 24 HOURS A DAY 260
12 ROMANVILLE SUBDIVISION 24 HOURS A DAY 148
13 VILLA ELESTER SUBDIVISION 24 HOURS A DAY 159
14 MARSTEEL ALANGAN 22.5 HOURS A DAY 450
15 ALANGAN BAPA 22.5 HOURS A DAY 570
16 ALANGAN HEIGHTS 24 HOURS A DAY 419
17 HILLVIEW LAMAO 22.5 HOURS A DAY 122
18 PEX LAMAO HI-WAY 22.5 HOURS A DAY 762
19 LAMAO MAIN 24 HOURS A DAY 1678
20 CRUSHER LAMAO 24 HOURS A DAY 258
21 BO. LUZ MAIN INACTIVE
22 BO. LUZ NEW INACTIVE
23 UPPER TOWNSITE INACTIVE
24 BLISS INACTIVE
A. GROUND WATER SOURCES
LIWAD sources its water supply from 22 deep well pump stations scattered throughout the town of Limay.
12 | P A G E
13 | P A G E
B. TREATMENT
LIWAD’s existing deep well facilities include 23 deep well stations, network of pipelines, elevated
water tanks and reservoirs. These deep wells have rated capacity of 120 to 1,678 cmd. The treatment for
ground water involves the use of Liquid Chlorine Dioxide.
The deep well facilities augment the water pressure of higher sections and far-off pipelines of the
service areas.
Water quality of the groundwater is compatible with the PNSDW and thus, does not require any
treatment except for preventive disinfection using Liquid Chlorine Dioxide. As a standard, the water
sample taken from the distribution line 100 meters away from the well source should have a minimum
0.30-ppm of residual chlorine. Based on the results of field monitoring, the dosing of chlorine at pumping
stations are adjusted, accordingly.
C. DISTRIBUTION
The existing water systems based on pipeline connectivity are as follows:
1. Limay Town proper Water system 1
2. Limay Town Proper Water system 2
3. Mamala Water system
4. Bliss Water system
5. Isidro subdivision water system
6. Saint Francis village water system
7. Alangan Water system
8. Lamao water system
9. Hillview Subdivision water system
14 | P A G E
WELL
STORAGECHLORINATI
ON DISTRIBUTIONHOUSEHOLDS
D. WATER PROCESS
PROCESS STEP SYMBOL RESPONSIBLE UNIT
SOURCE/WELL
Engineering Division
STORAGE TANKS
Engineering Division
CHLORINATION
PROCESS/TREATMENT
Engineering Division
DISTRIBUTION LINES
Engineering Division
CONSUMERS/
HOUSEHOLDS
Engineering Division
WELL
STORAGE
CHLORINATION
DISTRIBUTION
HOUSEHOLDS
15 | P A G E
E. STAKEHOLDERS
As a service provider, it is an absolute necessity that LIWAD maintains a harmonious relationship
and close coordination with its stakeholders. This amiable partnership will benefit both the District and
more importantly, the people it serves.
LIWAD submits monthly water quality report to Local Water Utilities Administration as its
regulatory body.
LIWAD coordinates with the Municipal Health Office, Municipal Engineer’s Office and the
Department of Public Works and Highways especially during pipe laying, maintenance works, distribution
line repairs and the like. Similarly, these offices may also seek the support of the Water District if and when
the need arises.
LIWAD has also established close connections with key suppliers for water treatment, PENELCO
and other major suppliers to mitigate water interruption should they fail to meet the services required by
the Water District and/or their services disrupt the operation of the latter.
A stable and reliable partnership was also built with the Home Owners Association (HOA),
Barangay Officials, Philippine National Police (PNP), Limay Fire Department and households near the
LIWAD facilities to guarantee the security of its properties against adversaries.
16 | P A G E
Name
Relationship to Drinking
Water Supply Issues
Point of Contact with WSP Team
Issues with Drinking
Water Supply
Interaction Mechanism
Record of Interaction
Local Water Utilities Administration
Regulatory Submission of WQ Report
Water Quality
Reporting Monthly Report
Department of Environment and
Natural Resources - CENRO
Environment Protection Authority
Regulatory Monitoring
Effluent Quality
Reporting Reports
Municipal Health Office
Regulatory Regulatory Monitoring
Water Quality
Reporting Reports
Municipal Engineer’s Office
Local Regulatory
Project / Leak repair coordination
Water Quality
Meetings / Communication
Minutes of Meetings
Department of Public Works and Highways
Local Regulatory
Project / Leak repair coordination
Water Quality
Meetings / Communication
Minutes of Meetings
PENELCO Supplier ( Energy )
Power interruption coordination
Water Quality /
Intermittent Supply
Reporting Reports
Municipal Health Office
Regulatory Regulatory Monitoring
Water Quality
Bacte Test report
Reports
Home Owners Association
Community partner
Turn over and coordination
meeting
Water Quality and
Rates
Meetings / Communication
Minutes of Meetings
Brgy. Officials Community partner
Coordination meeting
Water Quality and
Rates
Meetings / Communication
Minutes of Meetings
Suppliers Industry partner
Procurement / Delivery
Supply quality and
quantity
Purchase requisitions,
Purchase orders,
Delivery receipts
Household near Pump Stations
Community partner
Coordination meeting
Supply quality and
quantityReporting Reports
Fire Department Community partner
Fire Hydrant supply and
location
Supply quality and
quantityReporting Reports
PNP Police authority Safety of Facility Supply quality
Reporting Reports
Stakeholders
17 | P A G E
III. HAZARD IDENTIFICATION AND RISK ASSESSMENT
The WSP team took into consideration unusual events that may affect the quality of water being
delivered by Limay Water District. The team identified risks that may occur in each step of the validated
process flow. The hazard and hazardous event identification was conducted using existing records,
historical events, local knowledge and onsite visits. This led to the formulation of controls that can and will
mitigate such hazards and hazardous events to ensure a safe drinking-water supply. All potential biological,
physical and chemical hazards that could be associated with the water supply were thoroughly considered
by the WSP team during its identification process.
The hazards identified were subsequently ranked to establish priorities. A semi-quantitative risk
assessment was used by the WSP team used to calculate a priority score for each identified hazard. The
prioritization matrix aims to rank the hazard and hazardous events as to the urgency of mitigations that
need to be implemented. The likelihood and severity were derived from the team’s technical knowledge
and expertise, historical data and relevant guidelines. The table on the next page shows the calculated risk
scores results based on the described semi- quantitative risk matrix used to rate the likelihood or frequency
and severity or consequence of the hazards. Also determined by the WSP team is a cut - off point, or a risk
score of 5, below which all hazards will be retained for further consideration. Such hazards are considered
to be of less urgency considering the involvement of very small risks.
18 | P A G E
No Impact / Not
Detectable Rating 1
Minor Complianc
e Impact Rating 2
Catastrophic Public Health
Impact Rating 5
15
4 6 8 10
2 3 4 5
20 25
8 12 16 204
3
2
1
10 15
6 9
Risk Rating Low Medium High Very High
Almost certain Once a day
Rating 5
Moderate Once a month
Rating 3
5
Rating 1
Risk Score <6 "6 - 9" "10 - 15" >15
Unlikely Once a Year Rating 2
Rare Once every 5 years
12
Likelihood / Frequency
Likely Once a week
Rating 4
Severity / Consequence
Moderate Aesthetic Impact
Rating 3
Major Regulatory Impact Rating 4
Risk Factor Matrix
Semi-Quantitative Risk Matrix
19 | P A G E
Ranking Likelihood/Frequency Severity / Consequence
5 Almost Certain - Once per day Catastrophic
Potentially lethal to a large population,
likely to have also very significant
4 Most Likely - Once per week Major
Potentially lethal to a small population,
likely to have also significant morbidity
3 Likely - Once per month Moderate
Potentially harmful to a large population
but no mortality
2 Unlikely - Once per year Minor
Potentially harmful to a small population
but no mortality
1 Rare - Once every five years Insignificant
Negligible impact in terms of severity of
disease or numbers of people affected
20 | P A G E
Process Step Hazardous Event Hazard Likelihood Severity Score Risk Rating
Physical 2 2 4 Low
Microbial 2 2 4 Low
Failure of disinfection due to equipment breakdown
Microbial 2 3 6 Medium
Low
Disinfection
Reservoir Microbial 2 2 4
Seepage of leachate near well sources
Shortage of Chlorine at deepwell pumping station
Low
Intrusion of contaminantsdue to exposed /unsecured vent covers ofreservoir openings(animal & bird entry)
Well / Catchment
Microbial 2 2 4
A. GROUNDWATER
Hazard Identification and Risk Assessment for Groundwater
21 | P A G E
B. DISTRIBUTION
Hazard Identification and Risk Assessment for Distribution Lines
Process Step Hazardous Event Hazard Likelihood Severity Score Risk Rating
Yellowish water due to rusted inner surface of dilapidated
storage tankPhysical 2 2 4 Low
Turbid water due to Pressure Fluctuations and intermittent
SupplyPhysical 2 3 6 Medium
Turbidity of supply after repair due to pipeline breakage Physical 4 3 12 High
Intrusion of contaminants due to sub-standard materials and
improper installation of service connection
Physical 4 3 12 High
Intrusion of contaminants in supply due to illegal connections
Physical 3 3 9 Medium
Yellowish Water due to deterioration of Steel pipes
Physical 2 2 4 Low
Consumer Premises
Intrusion of contaminants due to substandard materials, improper installation & unsafe practice at
consumer premises
Microbial 3 2 6 Medium
Storage
Distribution
22 | P A G E
IV. DETERMINE AND VALIDATE CONTROL MEASURES, REASSESS AND PRIORITIZE THE RISKS
After identifying potential risks and hazards that may affect the quality of water being delivered to
concessionaires, the WSP team established control measures to address the identified possible risks. Each
control measure was validated to verify its efficacy based on records, data gathered and on-site assessment.
Upon validation of control measures, the risk rating for each stage of the treatment process,
storage, distribution system, down to the tap of every home was reduced. The reduction in the risk rating
achieved by each control is an indication of its effectiveness. The risks were prioritized in terms of their
likely impact to the capacity of the system to deliver safe water. High priority risks (risk rating from
medium to very high) may require system modifications or upgrade while lower priority risks (risk rating of
low) can often be minimized as part of routine good practice activities.
23 | P A G E
Proposed Control Measure
Hazards Likelihood Severity Score Likelihood Score Rating
P 2 2 4
Wells have blank casings down to 40mbgl and
sanitary grout down to 15mbgl
Presence of seepage from septic tanks would
normally produce odor on the water; No odor
reported over the last 27 years
1 2 L
M 2 2 4
Wells have blank casings down to 40mbgl and
sanitary grout down to 15mbgl
Water analysis for the past 5 years from 23 deepwell sources does not indicate
any sign of seepage of leachate from septic tanks
1 2 L
Failure of disinfection due to equipment breakdown
M 2 3 6
All disinfection facilities are subjected to regular preventive maintenance and calibration every month aside from the regular visual inspection by operators on duty
Six occurrences of equipment breakdown for the past year for each deepwell stations
2 2 L
Installation of standby disinfection units ready to use in case of breakdown
Shortage of Chlorine at deepwell pumping station
M 2 2 4
Regular delivery of chlorine supply to various deep well pumping stations
1 incident of chlorine shortage is reported for the past year
1 2 L
Increase storage capacity of tanks in active deep well stations
Reservoir
Intrusion of contaminants due to exposed / unsecured vent covers of reservoir openings
M 2 2 4Installation of vent coverscreens and padlocks forhatches
Small animals cannot pass through vent covers; hatches are securely locked with no signs of forced entry
1 2 L
Raw Risk Residual RiskValidation of Control
Measure
Hazardous Events / Cause of
Contamination
Process Step
Control Measure
Seepage of leachate near well sources
Well / Catchment
Disinfection
A. GROUNDWATER
Identification of Hazards, Hazardous Events and Risk Assessment/Determination for Groundwater
24 | P A G E
Hazards Likelihood
Severity Score Likelihood
Score Rating
Yellowish water due to rusted inner
surface of dilapidated storage
tank
P 2 2 4Repair Painting and
Disinfection of storage tank
No reported discoloration of water caused by rusted
storage tanks for the past 5 years
1 2 LMainainance of repaired
and disinfected Water tanks
Turbid water due to Pressure
Fluctuations and intermittent
Supply
P 2 3 6
Monitoring of pressure and maintaining
adequacy of water pressure
estimated reported 8 cases of water turbidity due to
water pressure fluctuations1 3 L
Develop additional source of water suppply & storage
facilities
Turbidity of supply after repair due to pipeline breakage
P 4 3 12Strict implementatio of SOPs in isolation and
leak repair
Instances and reports of turbid water supply are minimized in the last 2
years
2 6 L
Installation of additonal blow-offs/ hydrants for
flushing purposes & installation of pressure
reducing valves for pressure management
Intrusion of contaminants in
supply due to illegal connection
P 4 3 12Regular leak detection and Saturation Drive
illegal connections are randomly checked for a
specified area to minimize and eliminate the chance for any intrusions caused
by such
2 6 L
Eliminate or minimize illegal connections and saturate areas with high
non-revenue water reports
Yellowish water due to
deterioration of Steel pipes
P 3 3 9Rehabilitation of old and
deteriorated pipes
Minimal occurrence of iron precipitates in water supply. No reported
discoloration of water caused by rusted steel pipes
for the past 5 years
2 6 LContinuous rehabilitation of deteriorated pipelines
Consumer Premises
Intrusion of contaminants due
to substandard materials, improper
installation & unsafe practice at
consumer premises
M 2 2 4
Information and Education campaign on
standard in-house connection installation and safe water storage and handling practice
There are many Service Request (SR)/ Maintenance
Orders (MO) being received due to
substandard materials, improper installation &
unsafe practice at consumer premises
2 4 L
Intensify Information and Education campaign on
standard-in-house connection installation and
safe water storage and handling practice
Raw RiskControl Measure
Validation of Control Measure
Residual RiskProposed Control Measure
Storage
Distribution
Process StepHazardous Events
/ Cause of Contamination
B. DISTRIBUTION
Identification of Hazards, Hazardous Events and Risk Assessment/Determination for Distribution Lines
25 | P A G E
Action Arising fromIdentified specific improvement
planAccountability/ies Due
All disinfection facilities are subjected to regular preventive
maintenance and calibration every month aside from the regular visual
inspection by operators on duty
Risk assessment indicates that equipment breakdown can lead to
failure of disinfection
Procurement of new chlorinator that will serve as stand by unit
Division Manager / Engineering division/ Procurement Officer
Last quarter of 2017
Regular delivery of chlorine supply to various deep well pumping
stations
Possibility of microbial risk due to shortage of chlorine at deepwell
pumping station
Increase capacity of chlorine storage tanks in active deep well
stations
Division Manager / Engineering division
Every Quarter of 2017
Construction of Additional Water source in areas of Lamao and Mamala
First Quarter of 2017
construction of Water storage Tanks on pump stations with no storage facility
Last Quarter of 2017
Regular Leak Detection and Illegal connection detection
Risk assessment indicates the Intrusion of contaminants in supply due to illegal connections
Saturation of Areas indicative of illegal connection and minimizing leaks by qick
responseEngineering division Every quarter of 2017
Installation of pressure reducing valves for pressure management
Turbidity of supply after repair due to pipeline breakageInstallation of Pressure Reducing Valve at
Bgy. San RoqueEngineering division Last Quarter of 2016
Manager, Engineering Department
Risk assessment indicates the possibility of turbidity of water supply due to Pressure Fluctuations and intermittent Supply
Develop additional source of water supply & storage facilities
Identified specific improvement plan DueAccountability/iesArising fromAction
V. IMPROVEMENT / UPGRADE PLAN
The WSP team created an improvement or upgrade plan for each of the identified significant risks
with no known applicable controls recognized in the reassessment of risks. These improvement measures
are also suitable for other less significant risks specified.
Each improvement/upgrade plan indicated is delegated to a particular officer or Division within
LIWAD for the requisite implementation within the specified target date. These improvement/upgrade
plans may be short, medium or long-term programs and must be monitored to ensure that improvements
made are effective.
Limay Water District is committed to allocate the required budget for these improvement plans.
A. GROUNDWATER
B. DISTRIBUTION
26 | P A G E
Control Measure What to Monitor Where to Monitor
When to Monitor
How to Monitor Who will Monitor
Corrective Action
All disinfection facilities are subjected to regular preventive maintenance and calibration every month aside from the regular visual inspection by
operators on duty
At least 1 Spare Unit Chlorinator Stockroom Monthly Inventory Supplies officerRequest for additional
Chlorinator to serve as spare unit
Regular delivery of chlorine supply to various deep well
pumping stations
At least 1 pail of chlorine in full
Level of Chlorine Tote Bin pump stations weekly Visual Inspection
Operator on Duty
Request for delivery of Chlorine
Installation of vent cover screens and padlocks for hatches
Signs of screen deterioration and damaged
/ missing padlock
Condition of screen and padlock
All Reservoir Stations
Monthly Monitoring by Visual Inspection
Operator on Duty
Repair or Replacement of defective screen and
padlocks
Control Measure Critical Limit What Where When How Who Corrective Action
Repair, Painting & Disinfection of storage
tank
Complaints regarding water quality
Water SupplyFaucet within
facility / vicinity
DailyCollection of
Water SampleOperator on
Duty
Isolation of storage tank until rehabilitation is
completed
Strict implementation of SOPs in isolation and
leak repair.
Complaints regarding water quality
Water SupplyFaucet within
vicinityDaily
Collection of Water Sample
Operator on Duty
Flushing at hydrant/blow offs
Regular leak detection and Saturation Drive
Increase in Non Revenue Water (NRW
> previous month NRW)
NRW Database DMA Monthly NRW AnalysisEngineering
division
Continuous Formation and monitoring of DMA
and intensify leak detection activities
Rehabilitation of old and deteriorated pipes
Complaints regarding water quality
Water SupplyFaucet within
vicinityDaily
Collection of Water Sample
Operator on Duty
Rehabilitation of deteriorated pipelines
VI. MONITORING OF CONTROL MEASURES To ascertain the continuity of the controls, the WSP team performs monitoring activities that
defines and validates the control measures put in place and develop procedures to verify the efficacy of
such control measure.
The WSP team created a monitoring plan for the whole water supply system indicating an
acceptable critical/operational limit for each control and designated monitoring locations. A schedule for
monitoring frequency and appointed responsible part were also included in the plan.
Corrective actions were established to mitigate monitoring results showing parameters that are
outside of the acceptable “limits”. The monitoring of the control measures or operational monitoring is
documented from raw water inlet to the distribution system down to consumer premises.
A. GROUNDWATER
B. DISTRIBUTION
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VII. VERIFICATION
As a guarantee that the overall system design and operation is efficient as evidenced by safe and potable
water delivered to concessionaires, the WSP team performs a verification process that involves two
activities:
1. Compliance monitoring – confirmation of compliance with water quality targets including
Internal checking of operational activities
A. INTERNAL CHECKING OF ACTIVITIES
2. Consumer satisfaction – includes checking that consumers are satisfied with the water supplied.
B. CONSUMER SATISFACTION
Verification ActivityLocation of
ActivityType of Activity
Frequency of Activity
Analyst Recipient of ResultAction on unusual/
failing result
Verification of Chlorination equipment calibration
Pumping Stations Inspection semi annual Operator on dutyManager (Engineering
Department)SOP for corrective
maintenance
Verification of deepwell history Office Database Inspection semi annual Operator on dutyManager (Engineering
Department)Well Rehabilitation/ Well
Abandonment
Verification of Pipeline Management
Office Database/Distributi
on NetworkInspection semi annual
Engineer / Field Inspector / Division
Manager
Manager (Engineering Department)
Conduct investigation on status of pipeline based on the given data and make
necessary recommendations for pipeline rehabilitation if
necessary
Verification Activity
Location of Activity
Type of ActivityFrequency of
ActivityAnalyst
Recipient of Result
Action on unusual/ failing result
Offices/Collection Office
Survey DailyCustomer Service
assistantConcerned
Division
Service Requests/Investigati
on
Offices(Frontline)Received
complaints(walk- in/hotline/e-mail)
Daily
Division Manger - Commercial division,
Customer Service assistant
Concerned Division
follow-ups
Customer Feedback
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VIII. SUPPORTING PROGRAMS
The WSP team with the approval of LIWAD management formulated supporting programs to further the
delivery of safe drinking water. These programs will be coordinated and synchronized with LIWAD’s
district-wide agendas to achieve the common goal of serving all the residents of Limay province of Bataan
with equitable, reliable and immediate access to safe and potable water twenty-four hours a day at the least
possible cost.
These support activities do not directly affect water quality but are established to ensure that no additional
source of potential hazards will arise from the operating or surrounding environment and equipment used
as well as from the people, employees and visitors.
Program Purpose Specific Activity Target Date of Implementation
a. Flow Meters Quarterly
b. Water meters Quarterly
a. Electro-mechanical facility, deepwell stations
Quarterly
b. Cleaning of raw and clear water tank Annually
Hygiene and SanitationTo prevent personnel and equipment from introducing hazard to the water
b. Wearing of PPEs for personnel indirect contact with clean water
2nd quarter of 2017
a. Water Resources Facilities Operators' Course
1st quarter of 2017
b. Water Quality Management 3rd quarter of 2017
c. Understanding the Concept of Water Contamination
2nd quarter of 2017
d. Water Supply Materials Selection and Quality Assurance
4th quarter of 2017
Training
To ensure personnel familiarity and understanding
with water safety and the implications of their actions
CalibrationTo maintain accuracy and
reliability of equipment monitoring
Preventive Maintenance
To prevent unnecessary malfunctions in the process
and maintain effectiveness of strategies implemented
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IX. PERIODIC REVIEW
The Water Safety Plan must and shall be reviewed at least once a year to ensure that new risks
threatening the water sources, production and distribution of safe water are regularly assessed and
addressed. An updated Water Safety Plan will ensure the employees’ and stakeholders’ confidence and
support in the WSP approach.
Succeeding the implementation of the Water Safety Plan, all procedures and records should be
verified and reviewed to confirm the diligent implementation of the plan.
Periodic checking, monitoring and reporting of factual input serves as a management decision tool
to:
a. determine if company is at risk;
b. identify areas or opportunities for improvements;
c. assess individual performance;
d. assist company staff training needs,
e. improve communication and motivation of personnel.
Additionally, there will be revisions in the WSP Team consequent of the following:
1. Career movement
2. Resignation or retirement of members
3. Change of contact numbers
4. Expansion of the WSP Team
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ABBREVIATIONS
WSP - Water Safety Plan
DOH - Department of Health
PNSDW - Philippine National Standards for Drinking Water
DPWH - Department of Public Works and Highways
P E N E L C O - Peninsula Electric Company
LGU - Local Government Unit
PEO - Provincial Engineer’s Office
NRW - Non-Revenue Water
WQMS - Water Quality Management Section
WDS - Water District
WRFO - Water Resources Facilities Operator
SWUMO - Senior Water Utilities Management Officer
M PDC - Municipal Planning and Development Council
LWUA - Local Water Utilities Administration