Cost and Savings Study

Over the years the Council commissioned a series of Cost and Savings reports to develop methods and data to better ascertain economic analysis and water savings related to water conservation best management practices (and potential BMPs). The original 2000 CSS included sections on definitions of key concepts, descriptions of 14 water saving devices and activities, an annotated literature review, examples of cost-benefit analysis, and cost-effectiveness analysis, as well as known areas where future research is needed. In 2016 the Council recently completed an update to the Cost and Savings Studies.

Updates to the Cost and Savings Study

In May of 2005 the Council published an updated and expanded CSS report with 17 topics. The revised CSS included new discussion of Irrigation Controllers, Film Processing (X-Ray), Food Service Equipment. In 2014-2016 the CSS was updated again. In this update the Cooling Tower Controller, Weather Based Irrigation Controller, Large landscape, and Pre-rinse Spray Valve along with high efficiency toilet and urinal topics were updated. Additionally the 2014-16 update includes discussion of a new topic, Landscape Labeling and Education, along with three conceptual topics from the previous reports section on known areas where future research is needed - Discount Rates, Savings decay Over Time, and Natural Replacement Rates. The Cost and Savings Study Topic Index table below shows the history of these topics over the years.

Authors and Funding

The 2000 report and 2005 was authored by A&N Technical Services, Inc.. Funding was provided by Council members - the following contributed to the project fund: Alameda County Water District, City of Santa Monica, Contra Costa Water District, East Bay Municipal Utility District, Kern County Water Agency, Los Angeles Department of Water and Power, Metropolitan Water District of Southern California, San Diego County Water Authority, Santa Clara Valley Water District.

The 2014-16 Updates were authored by Western Policy Research. Funding was provided through a grant from the California Water Foundation.

Index of Cost and Savings Study Reports

Cost and Savings Study Topic Index
Article type 2000 Topics (PDF links) 2005 Topic Updates (PDF links) 2014-16 Topic Updates (PDF links) Current Article(s)
System Wide File:Conservation Pricing CSS 2003.pdf File:Conservation Pricing-CSS-2005.pdf Conservation Pricing
System Wide File:Metering CSS 2000.pdf File:Universal Metering and Multi-Family Submetering-CSS-2005.pdf Metering Water Use, Submetering Multi-family Water Use
System Wide File:System Audits and Leak Detection CSS 2000.pdf File:System Audits and Leak Detection-CSS-2005.pdf Distribution System Water Audit (Water Loss), Distribution System Leak Detection (Water Loss)
Residential File:Graywater CSS 2000.pdf File:2.2 Graywater-CSS-2005.pdf Graywater
Residential File:High Efficiency Washing Machines CSS 2000.pdf File:2.3 High Efficiency Washing Machines-CSS-2005.pdf File:Residential Clothes Washers CSS 2014.pdf Clothes Washers (Residential)
Residential File:Hot Water Demand Unit CSS 2000.pdf File:2.4 Hot Water Recirculation on Demand (Residential)-CSS-2005.pdf Hot Water Distribution (Residential)
Residential File:Residential Plumbing Retrofits CSS 2000.pdf File:Residential Plumbing Retrofits-CSS-2005.pdf Residential Plumbing Retrofits
Residential File:Residential Surveys CSS 2000.pdf File:Residential Surveys-CSS-2005.pdf Residential Surveys
Landscape File:2.1 Irrigation Controllers (Residential)-CSS-2005.pdf File:Residential WBICS CSS 2014.pdf Weather Based Irrigation Controllers
Landscape File:Large Landscape Devices CSS 2000.pdf File:2.16 Large Landscape-CSS-2005.pdf File:Large Landscape Programs CSS 2014.pdf Large landscape
Landscape File:Landscape Education and Labeling CSS 2016.pdf Landscape Education and Labeling
Commercial and Residential File:Ultra Low Flush Toilets (CII) CSS 2000.pdf File:2.14 Ultra Low Flush Toilets (CII)-CSS-2005.pdf File:HETs and HEUs Residential and Commercial CSS 2016.pdf High Efficiency Toilets and Urinals
Commercial and Residential File:Ultra Low Flush Toilets (Residential) CSS 2000.pdf File:2.9 Ultra Low Flush Toilets (Residential)-CSS-2005.pdf
Commercial and Residential File:Urinals CSS 2000.pdf File:Urinals-CSS-2005.pdf
CII File:CII Surveys CSS 2000.pdf File:CII Cooling and Industrial Practices-CSS-2005.pdf File:Cooling Tower Controllers CSS 2016.pdf CII surveys: Cooling and Industrial Processes
CII File:2.11 Film Processing (X-Ray)-CSS-2005.pdf Film processing (X-ray)
CII File:2.12 Food Service Equipment-CSS-2005.pdf File:Commercial Pre-Rinse Spray Valves CSS 2016.pdf Pre-Rinse Spray Valves
CII File:CII Surveys CSS 2000.pdf File:2.13 Self-Closing Faucets-CSS-2005.pdf File:Self-Closing Faucets CSS 2016.pdf Self-closing Faucets
Conceptual Topics File:Discount Rates CSS 2014.pdf Discount Rates
Conceptual Topics File:Savings Decay Over Time CSS 2014.pdf Savings Decay Over Time
Conceptual Topics File:Natural Replacement Rates CSS 2014.pdf Natural Replacement Rates
Has introductionOver the years the Council commissioned a
Over the years the Council commissioned a series of Cost and Savings reports to develop methods and data to better ascertain economic analysis and water savings related to water conservation best management practices (and potential BMPs). The original 2000 CSS included sections on definitions of key concepts, descriptions of 14 water saving devices and activities, an annotated literature review, examples of cost-benefit analysis, and cost-effectiveness analysis, as well as known areas where future research is needed. In 2016 the Council recently completed an update to the Cost and Savings Studies.
an update to the Cost and Savings Studies. +