If you don’t have time to attend a million meetings each week related to SB 606/AB 1668, CalWEP, RWA, and ACWA have teamed up and have you covered. Our team will post bi-weekly updates for each standard below keeping you up to date on the latest developments as the SWRCB and DWR go through the regulation and rulemaking process. Have something you think we should be covering? Reach out to us at [email protected]

To recap, here is the breakdown of the water use objective:

CII performance measures will also be developed and information related to these are included in the updates with CII Landscape Standards.

Updates by Standard

Legislative Timelines & Status

Last updated July 2021

Recent Events By Standard

Indoor Standard (DWR)

  • May 11 – DWR Draft Report proposed:
    • 2020: 55 gpcd (no change in current statute)
    • 2025: 47 gpcd (5.5 gpcd less than current statute)
    • 2030: 42 gpcd (8 gpcd less than current statute)
  • July 19 – Additional DWR Workshop and last opportunity for stakeholder comments
  • Mid-August – DWR expects to release final report with recommended standard (*recommended standard requires legislation to go into effect)

Outdoor Standard (DWR)

  • June 30 – Water suppliers Landscape Area Measurement (LAM) data correction/ request for ongoing data corrections
  • June 30 – Standards and Methodology Workgroup Meeting, DWR proposed:
    • ET adjustment factor of 0.7
    • Irrigable not irrigated (INI) used as buffer (20% of INI)
  • August 30 – Deadline for DWR to review submitted adjustment requests and deliver final LAM data to the suppliers
  • Next workshop: August

CII Performance Measures (DWR)

  • Ongoing discussions with DWR:
    • Threshold for mixed use meter conversion
    • Classification System
  • May 17 – DWR White Paper on BMPs
  • Next workshop: August 23 – DWR Monthly CII Meetings (fourth Monday)

Variance & Bonus (DWR)

  • July 21 @ 1:00 pm – DWR Monthly Meeting

Water Loss Performance Standards (State Water Board)

  • April 15 – Revised draft economic model and performance standards
  • Ongoing discussions:
    • CMUA Compliance Path – >30% reduction
    • Changes to economic model
  • Fall? – Formal Rulemaking w/ 45 public comment period

Water Supply and Demand Assessment (DWR)

  • July – Draft guidance document
  • August – Workshop


August 18, 2021: ACWA Water Use Efficiency Bi-Monthly Meeting

April 27, 2021: CalWEP Presentation to Water Conservation Showcase: Water Efficiency Standards: California Update


Comment Letters

ACWA/CMUA Outdoor Standard Comment Letter – August 17, 2021

ACWA Coalition Indoor Standard Comment Letter – June 4, 2021

RWA Indoor Standard Comment Letter – June 4, 2021

CalWEP Indoor Standard Comment Letter – June 4, 2021



Additional Resources

CalWEP Members: Framework Resource Hub

ACWA Members: Long-Term Water Use Efficiency Resources

DWR SharePoint



For any specific questions reach out to:
Tia Lebherz, CalWEP – [email protected]
Chelsea Haines, ACWA – [email protected]
Amy Talbot, RWA – [email protected]