California Urban Water Conservation CouncilMarch 1, 2011

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Consultant NeedsCalifornia CII water use volumes by NAICS or

sector

California Case studies

California CII contacts (trade organizations, industrial experts, etc.)

TF input and information

Data from California DWR EPA, etc. and other sources (consultants will need to make in contacts) 2

• February 2008, Governor calls for 20% reduction in per-capita urban water use by 2020

• To reach this target, all water users, including the CII sector will need to do their part

• CII water use in California estimated to be approximately one-third of total water use in the State’s urban areas

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Urban Water Uses (California) Urban Water Uses (California)

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CII Sectors

Landscape Irrigation 33%

Industry & Other 31%

Cooling Towers 15%

Restrooms 15%

Commercial Kitchens 6%

CII Water Use by Application - California

Source: Natural Resources Defense Council

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Source: Pacific Institute, 2003, “Waste Not, Want Not” 6

Total Acre Feet

Source: Pacific Institute, 2003, “Waste Not, Want Not” 7

Source: NRDC, 2009, “Making Every Drop Work” 8

Source: EBMUD, 2010, “The WaterSmart Guidebook: A Water Use Efficiency Plan and Review Guide for New Businesses” 9

BMP Development

• Commercial – Institutional• Matrix or Technologies Approach• Similar format to EBMUD Guide

• Industrial – Manufacturing • More descriptive format for specific industries, but

would contain a technologies section for commonly found processes such as cooling towers, boilers etc.

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Similar BMP Efforts – Past & Present

Texas (2004)

New Mexico (1999)

North Carolina (2009)

U.S. EPA – WaterSense Program (2011)

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U.S. EPA WaterSense ProgramDevelopment of Comm’l-Institutional BMPs

No industrialWork now underway32 categories

Commercial food service equipment (10)Plumbing (4)Building systems (3)Landscape & irrigation (2)Education & management (2)Medical & laboratory (2)Alternate water sourcesOther (8)

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Example BMP from WaterSenseBest Management Practices for

Boiler/Steam Systems

Operations and Maintenance Options

Obtain the services of a water treatment specialist to prevent system scale and corrosion and to optimize cycles of concentration. Treatment programs should include periodic checks of boiler water chemistry.

Outline for ReportCommercial & Institutional

Brief description of water using sector in California

Estimate of water use by sector (where available from existing sources)

Description of how water is used by use technology

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Outline for Report (cont’d)

Commercial & InstitutionalMatrix of technologies associated with CI sector

Technology BMPs

Technology description

Technology best practices to save water

Discussion of potential water savings per operation

Potential cost differences

Recommended BMP’s

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Outline for Report Industrial

Overall discussion of industrial sectorMajor water industries addressedIndustry-specific information

How water is used by sectorDescription of industry specific BMP’sReference to technology section for common water

using technologies (boilers, cooling tower, water treatment, etc.)

Summary of BMP’s and recommendations

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A Look At Alternate SourcesThere is significant opportunity to use both recycled

water and water collected from on-site sources. Within the context of a BMP for CII, the focus should

be on how can the CII water user evaluate the viability of these sources.

This will be covered in a chapter on Alternate Sources of Water.

It will include information on both recycled municipal wastewater and on-site sources ranging from rainwater harvesting, to use of air conditioning condensate, to complete on-site recycling.

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Specific Legislative PointsEvaluation of public infrastructure

necessary for delivery of recycled water to the CII sectors.

Evaluation of institutional and economic barriers to increased recycled water use within the commercial, industrial, and institutional sectors. 18

Difficulties Evaluating Recycled Water

Lack of a central repository of information about recycled water infrastructure

No one set of economic values for a state with such a variation in water costs

TF members input critical for input regarding case studies and other background data to assist in answering that section of the Legislation.

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A Look At Alternate SourcesOutline

Description of Possible Sources

Information on Water Quantity & Quality Considerations

What the CII user should know to evaluate the potential

Sources of Information and Assistance

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Many different approaches……by type of end use application

Manufacturing

OtherEducation & Govt

Retail & Office

Hospitality & Recreation

Transportation

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Many different approaches……by process application

Laundry, Rinsing & Cleaning

ManufacturingAlternate Sources of Water

Commercial Food Service

Medical & Health Care,

Laboratories

Building Systems

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Industrial Sectors

Fruit & Vegetables

Fabricated MetalBeverages

Dairy & Meat Processing

Textiles

Electronics

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Metal PlatingPetroleum Refining Other?

NAICS Industrial Sectors

.

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Water-Using Manufacturing ProcessesCleaning and sanitation

Water treatment

Thermodynamic processes

Transportation and cleaning of food products

Equipment cleaning

Container cleaning

Lubricating can and bottle conveyor belts

Can and bottle warming and cooling

Product ingredients

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Commercial Example: Food Waste Disposal

Options available

Description of water use by each options

Possible energy or environmental considerations?

Potential water savings

BMP recommendations

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Food Waste Disposal Comparison

Grinder Salvajor PulpierStrainer Basket

Solids to Sewer Yes No No No

Recirculate No Yes Yes No

Strain Solids No Yes Yes Yes

Compost Prod. No Yes Yes Yes

Solid Waste Prod. No Yes Yes Yes

Flow Restrictor? Yes No No N/A

HP 1-10 0.75-7.5 3-10 0

GPM (Potable water only) 3-8 1-2 1-2 0

Sluice Trough GPM 2-15 2-15 recirculation?

2-15 recirculation?

0

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Q – What’s Next? A – Information!!

Water use & water savings dataBy facility type OR process typeMeasured water preferred vs. engineering estimatesPrevious CII water use audits (e.g., MWD, EBMUD, others)

Water-efficient technologies & practices21st century – advanced & provenNon-proprietary

Other authoritative information sourcesTF membersOther individuals & organizationsWeb-based resources

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