Water indicatorsData collection, analysis, reporting

- Serbian Experience

Milijana Ćeranić - Statistical Office of the Republic of SerbiaDejan Lekić - Serbian Environmental Protection Agency

UNECE, Geneva 13 May 2014

Water supply / sanitation indicators Bylaw on the National list of environmental

indicators adopted in 2011 81 indicators in total / 11 water related

indicators 5 indicators directly related to the water

supply and waste water 3 additional indicators within sustainable use

of natural resources

Indicators

Water indicators: Drinking water quality Population connected to public water supply Population connected to public sanitation Urban waste water treatment Polluted (non-treated) wastewaters

Sustainable use indicators Household water use per capita Water losses Renewable freshwater resources

Data Collection

Statistical Office of the Republic of Serbia Public Health Institutes Water Directorate Local water supply and sewage public

companies

Environmental Information System – Eionet Serbia

Environmental Information System – Future

Survey on Public water supply and Survey on urban wastewater as part of Water statistics - Environmental statistics.

Conducted in line with Law on Official Statistics (“Official Gazette of RS”, No

104/2009), Official Statistics Strategy (establish for 5 year) and Annual Statistical Programme.

Obligation to provide data The obligation to provide data is laid down in Article 26 and the penalty provisions relative to

the refusal of providing data or providing incomplete and false data in Article 52 of the Law on Official Statistics (“Official Gazette of RS”, No 104/2009).

Obligation to protect individual dataResults of the survey are published as aggregates, taking into account the obligation to

protect individual data according to the Law on Official Statistics.

Populatin connected to water supply Populatin connected to wastewater

treatment

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Water statistics -abstracted

-using-treated

-wastewater

Drinking water-housholds-industry

-institutions

Water use in

INDUSTRY

Water use in

Agriculture

IRIGATION-LIVESTOCK’s USE

Waste watertreated

Industrial processis

Cooling water

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SURVEY ON DRINKING WATER SUPPLY

Survey on drinking water supply provides data which are classified into three topics: Water abstraction (from rivers and underground water) included overtaken water from other networks and water provided to other systems;

Water distributed to users: households, business entities dealing with the sections of Agriculture, forestry and fishing, Mining and quarrying, Manufacturing and Electricity, gas, steam and air conditioning supply, Water supply; sewerage, waste management and remediation activities, as well as to other consumers, water used for own consumption, and total water loss;

Data on water treatment, water supply network and costs of drinking water production.

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SURVEY ON URBAN WASTEWATER

Objective of conducting the survey on urban wastewater is to provide the data on:

Quantities of wastewater discharged in the recipient Quantities of discharged treated and untreated

wastewater Devices for wastewater treatment Biological and chemical oxygen demand and quantity of

heavy metals in wastewater Sewerage system/ network. www.stat.gov.rs

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List and definitions of main items – indicatorsPublic water supply is a system for drinking water supply, having arranged and

protected source, abstraction, reservoir and water network and presents a set of connected hydro-technical components under singular management and control, used for water abstraction, collection, treatment and distribution to consumers.

Water abstraction (sources) refers to all the places of public underground or surface waters from which water supply systems are supplied (underground, surface waters, spring waters, watercourses, accumulations and lakes).

Distributed water relates to all directly abstracted and supplied water distributed by the

water supply system during the reference year to its consumers. The quantities of distributed water are measured by water gauge or, where they are not available, quantities are calculated according to norms relative to a selected activity group.

Drinking water is water used for drinking, processing and production of food and

general use items, as well as for other people’s needs. Water used or intended for drinking must not contain elements harmful for human’s health above the determined limits and regarding physical, chemical, biological, bacteriological, virological and radiological features, it has to satisfy the established conditions.

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DEFINITIONS– UNSD/UNEP QUESTIONNAIRE 2013 ON ENVIRONMENT STATISTICSTotal population supplied by water supply industry (ISIC 36)- Percentage of the total resident population using water supplied by the water supply industry (ISIC 36).

Urban population supplied by water supply industry (ISIC 36) - Percentage of the urban resident population using water supplied by the water supply industry (ISIC 36).

Rural population supplied by water supply industry (ISIC 36) - Percentage of the rural resident population using water supplied by the water supply industry (ISIC 36).

Population connected to wastewater collecting system - Percentage of the resident population connected to the wastewater collecting systems (sewerage). Wastewater collecting systems may deliver wastewater to treatment plants or may discharge it without treatment to the environment.

Population connected to wastewater treatment - Percentage of the resident population whose wastewater is treated at wastewater treatment plants.

Population with independent wastewater treatment (e.g., septic tanks) - Percentage of the resident population whose wastewater is treated in individual, often private facilities such as septic tanks.

Population not connected to wastewater treatment - Percentage of the resident population whose wastewater is neither treated in treatment plants nor in independent treatment facilities.

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DEFINITIONS– UNSD/UNEP QUESTIONNAIRE 2013 ON ENVIRONMENT STATISTICS

Reporting units, statistical units

Data on water use in settlements are collected from all business entities that collect, distribute water and/or manage the systems for water use and data on wastewater and treated water are collected from the reporting units managing the sewerage systems.

Activity of these reporting units is, according to the Classification of Activities, defined in the division 36 – Water collection, treatment and supply and division 84 – Public administration and defense, compulsory social security (local communities’ authorities managing water supply systems). (ISIC and NACE Rev.2)

Survey coverage The survey covers all business entities that perform their activity on the

entire territory of the Republic of Serbia.

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Method, time and sources for data collection Data collection is done by the reporting method, meaning that the reporting unit uses its available

documentation and records to fill in the questionnaires. The competent person enters the requested (existed or estimated data) for the previous year. The reporting unit forwards the questionnaire to the relevant statistical authority on which territory its head office is located within the deadline set up in the annual plan.

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Timetable

1 2 3 4 5 6 7 8 9 10 11 12

Distribution of the questionnaires to regional statistical units xFieldwork x x Delivery of inputted and controlled material xLogical and computer control xData procesing x x xPreliminary data xData validation x x x xFinal data xDesimination x x xPreparation for the new survey x x

Months

Level of data representatives (territorial)The data are representative for the territory of the Republic of Serbia

RegionsDivisionsMunicipalities

As well by river basins:DanubeSavaMorava

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Harmonization with international recommendations, standards and practice

The methodology relative to this survey is harmonized with international recommendations and standards: Water Framework Directive, WFD - 2000/60/EC; JQ OECD/Eurostat – Inland water; Questionnaire REQ12 – Regional Environmental Data Collection - Inland water;

JQ UNSD/UNEP – Environmental Statistics.

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SURVEY TOOLSQuestionnaire and instructions for filling the questionnaire For conducting the survey on drinking water supply, used is the Questionnaire “Annual survey on drinking water supply, (VOD – 2v)” and “Annual survey on urban wastewater (VOD-2k), with the instructions for completing it.

Electronic form of the questionnaire with the instructions is also available on SORS website: www.stat.gov.rs

Methodologies (www.stat.gov.rs)

List of nomenclatures and classifications used in the survey • Code list of watercourses

• Classification of Activities (CA – 2010, “Official Gazette of RS”, No 54/10)

• Regulation on Nomenclature of Statistical territorial Units (“Official Gazette of RS”, No 109/09 and 46/10).

All documents are available on SORS website: www.stat.gov.rs

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Table 2 Water distribution and losses

Sequence

number

Number of:Water

quantity,thous. m3

Average price of water

distributed with VAT, in

RSD / m3

1 2 31 Total distributed water (2+7) xxxxxxxxxxx

2 Total water sold to: (3+4+5+6) xxxxxxxxxxx

3 Households xxxxxxxxxxx

4

Enterprises dealing with: agriculture, forestry and fishing

5 Industry enterprises

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Other consumers: schools, institutions, stores, hospitals, hotels, etc.

7 Water for own consumption xxxxxxxxxxx xxxxxxxxxxx

8 of which: sanitary water xxxxxxxxxxx xxxxxxxxxxx

9 Total water losses xxxxxxxxxxx xxxxxxxxxxx

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Table 3 Water treatment, water supply network, users and costs for the production of drinking water

Sequence

number

Number of:

Water quantity,

thousend m3

1 2

1 ...

32 Number of water connections pipes xxxxxxxx

35

Number of households connected to water supply network

36

Population connected to water supply network - NEW

... ...

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Wastewater discharged in water bodies

Seq. number

Number of:

Water quantity,thous. m3

Average price of wastewater

with VAT, in RSD / m3

1 2 31 Wastewater discharged -total xxxxxxxxxxx

2 - Untreated water xxxxxxxxxxx xxxxxxxxxxx

3 -Treated water xxxxxxxxxx

4 •Primary treatment (physical/ chemical)

5 •Secondary treatment (physical/ biological)

6

•Tertiary treatment (physical/chemical/ biological)

7 Wastewater discharged - from household xxxxxxxxxxx xxxxxxxxxxx

8

Number of households connected to the wastewater collecting system

xxxxxxxxxxx

9

Population connected to the wastewater collecting system (NEW)

xxxxxxxxxxx

10 Number of households with septic tanks

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Table 6 - List of all settlements covered by the public water supply and urban wastewater collecting systems

Name of the settlement

Number of households connected to public

water supply

Total distributed

water thous. m3

Number of households connected to urban

wastewater coll. system

Total wastewater discharged thous. m3

NAME 1 N1 MMM N2 >= N1 VVV <MMM... ... ... ... ...

... ... ... ... ...

... ... ... ... ...

... ... ... ... ...

... ... ... ... ...

2012

Number of households

(Census 2011)

Hauseholds connected to public water supply by survey (VOD2)

%

Nu. of occupied dwellings

with (Census 2011)

Estimation/ Hauseholds

connected to public water

supply %

Average number of

households members

Estimation/ Population connected

to public water supply

  1 2   3 4  

R Serbia 2500690 2210993 88.42 1822943 2044583 81.76 2.88 5 888 399

Serbia - North 1302590 1349835 103.63 1079142 1197175 91.91 2.75 3 292 231

•Belgrade 606433 659815 108.80 547321 562547 92.76 2.73 1 535 753

-Belgrade 606433 659815 108.80 547321 562547 92.76 2.73 1 535 753

Vračar3) 539483 606593 112.44 476632 509325 94.41 2.23 1 135 795

Lazarevac 18862 11782 62.46 11978 11782 62.46 3.11 36 642

Mladenovac 17512 12180 69.55 10085 12180 69.55 3.01 36 662

Obrenovac 23712 23359 98.51 18622 23359 98.51 3.04 71 011

Sopot 6864 5901 85.97 3578 5901 85.97 2.97 17 526

Vojvodina 696157 690020 99.12 531821 634628 91.16 2.76 1 751 573

•West Bačka 68888 67819 98.45 38398 63063 91.54 2.72 171 531

-Apatin 10772 11062 102.69 7758 10161 94.33 2.67 27 130

... ... ... ... ... ... ... ... ...

Population connected to public water supply

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2012

Number of households

connected to WW system by

Survey

Number of households

(Census 2011) %

/Estimation/ Households

connected to WWT %

Average number of

households members

Estimation/ Population

connected to WWT

   

R Serbia 1461148 2500690 58.43 1466334 58.64 2.88 4223042

Serbia - North 862308 1302590 66.20 862308 66.20 2.75 2371347

Belgrade 518586 606433 85.51 518586 85.51 2.73 1415740

-Belgrade 518586 606433 85.51 518586 85.51 2.73 1415740

Vračar3) 490063 539483 90.84 490063 90.84 2.23 1092840

Lazarevac 8269 18862 43.84 8269 43.84 3.11 25717

Mladenovac 8370 17512 47.80 8370 47.80 3.01 25194

Obrenovac 11300 23712 47.66 11300 47.66 3.04 34352

Sopot 584 6864 8.51 584 8.51 2.97 1734

Vojvodina 343722 696157 49.37 343722 49.37 2.76 948673

West Bačka 18421 68888 26.74 18421 26.74 2.72 50105

Apatin 6100 10772 56.63 6100 56.63 2.67 16287

... ... ... ... ... ... ... ...

Population connected to wastewater

systems /WWT

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Population connected to WWTPopulation connected to WWT

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2012Population connected

to wastewater collecting system

Population connected to wastewater treatment

Population connected to

primary treatment

Population connected to

secondary treatment

Population connected to

tertiary treatment

R Serbia 4221817 783637 110914 596793 97549

Serbia - North 2367138 266373 29741 166763 90482

•Belgrade 1413453 0 0 0 0

-Belgrade 1413453 0 0 0 0

Vračar3) 1267357 0 0 0 0

Lazarevac 25678 0 0 0 0

Mladenovac 25179 0 0 0 0

Obrenovac 34401 0 0 0 0

Sopot 1732 0 0 0 0

•Vojvodina 949405 268023* 29925 167797* 91043*

-West Bačka 50145 20509 20441 20509 0

Apatin 16274 0 0 0 0

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Key issues and challenges - statistics

•Data sources•All Public water supply and sewerage systems are included;

•Data availability•Some data is not available. •Time series•Survey has been conducted more than 50 years.

•Problems existing with data collection:•Lack of educated people responsible to fulfilling questionnaires.

•Unpaid (from users) distributed water, often has been presented as losses.

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Key issues and challenges

Losses presented as total (by transport and by leakage)Number of households identified as Number of pipe (water) connections

Measurement units often wrong Estimations depend of experts.

Comparability and validation dataAcross countries, RegionReporting to Eurostat and UNSD

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Challenges – EPA

Better data collection procedures Improved quality assurance Increased monitoring frequency Integration of local, regional and national

information systems – SEIS concept applied Building capacity on all levels Better financial instruments

Outputs

Percentage of population connected to public water supply Water losses

Percentage of population connected to public sewage systems Water Treatment Index

Outputs

ThankThank youyou for your for your attention!attention!