Municipal Wastewater

Recycling Survey

November 1, 2011

Presentation by: Daniel Newton, Sr. WRCE

Survey History

Survey Purpose

Survey Procedure

Detailed Results

Key Challenges

Recommendations

Survey Outline

Water Recycling Funding Program surveys:

Survey Year Target Recipient Type Total Use

(Acre-Feet/Year)

1987 Producer

267,000

2001 Producer 525,000

(450K-580K)

2009 Producer, Wholesaler/Retailer,

Retailer

To be discussed

Survey History

Conducting the recycled water survey is necessary to determine the progress being made towards meeting the Water Board Strategic Plan Goal #3 (adopted on September 2, 2008)

State Water Board Recycled Water Policy Goals & Mandates (adopted on February 3, 2009)

Agency/Public requests for recycled water data

Used in California Water Plan update (DWR)

Survey Purpose

Survey Development

List of Target Agencies/Entities

Survey Notification – Email and phone calls

Quality Assurance (QA)

• Follow-up emails and calls (Initial QA)

• Posting of Initial Results for Agency/Entity feedback (Initial QA)

• Continued QA (SWRCB and DWR)

Survey Procedure

Total Use

724,000 AF

Response Rate

35%

Carry-Over

30% (by Vol.)

Initial 2009 Results Summary

Los Angeles County 2009 Water Recycling

LA City,

Bureau

of

Sanitatio

n

County

Sanitatio

n Districts

of LA

County4

Collection, treatment, and distribution

Supplemental treatment and distribution

Distribution

Injection barrier and recharge management

Brine Direct retail customers

Pomona,

Walnut

Valley,

and

Rowland

WDs

112,6

84 A

F

1 Glendale is entitled to up to 50 percent of the treated water produced at the Los Angeles Glendale Water Reclamation Plant.

2 Tertiary treated water returned to LADWP is accounted for within West Basin’s total volume. LADWP reports in its 2010 UWMP this volume as 676 AF.

3 Water provided to WRD from its four suppliers is included in the total volume of the original supplier (County Sanitation Districts of LA County and City of LA BOS).

4 County San Districts of LA County and Bureau of Sanitation are shown for Fiscal Year 2008-2009.

LA

County

Public

Works

Burbank

Water

and

Power

Las

Virgenes

MWD

Cities of

Manhattan

Beach, El

Segundo,

& Torrance

WRD3

LA City,

Dept of

Water

and

Power

29,2

36 A

F

City of

Glendale1

West

Basin

MWD

Golden

State

WC and

Cal

Water Long

Beac

h WD

Long

Beach

WD

Cities of

Bellflower,

Cerritos ,

Industry,

and

Lakewood

Upper

San

Gabriel

Valley

MWD

Centr

al

Basin

MWD 4,6

45

A

F

Variou

s Cities

Castai

c Lake

WA

Valenci

a WC

Antelope Valley

Total Use

658,000 AF

Response Rate

95%

Carry-Over

8% (by Vol.)

Final 2009 Results Summary

Region 2:

San Francisco Bay

2009 Recycled Water Use

by Region

3

4 8

9

7

6

5

1

1

2 2

Region 3: Central Coast 3

Region 1: North Coast

4 Region 4: Los Angeles

5 Region 5:

Central Valley

8 Region 8: Santa Ana

9 Region 9: San Diego

7 Region 7: Colorado River Basin

Agriculture Irrigation

Urban Uses

Indirect Potable Reuse

Total Reuse

(Thousand Acre-Feet per Year)

6 Region 6: Lahontan

2009 STATEWIDE INTENSITY MAP

0

100,000

200,000

300,000

400,000

500,000

600,000

700,000

1970 1975 1980 1985 1990 1995 2000 20051970 1977 1987 2001 2009

An

nu

al

Use

(a

cre

-fe

et p

er

ye

ar)

San Diego Region

Santa Ana Region

Central Valley Region

Los Angeles Region

Central Coast RegionSan Francisco RegionNorth Coast Region

Colorado River RegionLahontan Region

175,000184,000

267,000

525,000

658,000

Recycled Water Use by Region

0

100

200

300

400

500

600

700

AN

NU

AL

US

E

(Th

ou

san

d A

cre-

Fee

t/Y

ear)

1970 1987 2001 2009 1977

Trend In Recycled Water Use

Key Challenges

Voluntary participation by agencies/entities

Requires high level of accuracy and response for credible data (minimize carry-over)

Maintaining institutional knowledge (staffing, policy, goals, tools)

Understanding of complex inter-agency relationships

Time and resource intensive

Inconsistent reporting of data by staff within the same agency/entity

(1 of 2)

Regional variation in the reported recycled water use data

Variation in the use of terminology:

• Municipal Wastewater – Refers to source of wastewater rather than public ownership of facilities.

• Land Disposal – Disposal may be a beneficial reuse if it results in a usable product such as alfalfa for feed.

• Groundwater Recharge – Wastewater percolation ponds do not constitute groundwater recharge.

Key Challenges (2 of 2)

A) Existing Authority:

Require a uniform reporting system for recycled water in

the State

B) Survey Approach:

Align the next comprehensive survey with the 2015

Urban Water Management Plan Update to coordinate

data collection and reporting functions

Conduct future interim survey updates in a phased

approach to help maintain institutional knowledge with

reduced staff resources

Recommendations (1 of 2)

Continue to collaborate with WateReuse Assoc.,

Department of Water Resources, and the wastewater

community to refine a process on survey development

and implementation

Target producers for recycled water data for future

surveys

Utilize a web accessible database

Recommendations (2 of 2)

Questions?

Targeted Survey Recipients

1987, 2001,

2009

2009

2009

WHOLESALER

RETAILER

WWRF

END USER

RETAILER

MUNICIPAL

WASTEWATER

WHOLESALER

END USER

END USER