Join our March 22 Summit Partners webinar on Spill Emergency Response Plans


Upcoming WDR Training
Update and implement by June 4, 2023. The annual plan must address several items. Submittal to CIWQS is not required. Learn more >
Upload your agency’s existing Sewer System Management Plan to CIWQS.
Designate your Legally Responsible Official (LRO) in CIWQS.
(if necessary, per updated requirements)
The General Order goes into effect June 5, 2023.
Annual Report due.
April 1, 2024
Complete your audit in 2024 or 2025 depending on agency’s population size. View deadlines >
Updated SSMPs are due in 2025 or 2026 depending on agency’s population size. View deadlines >


CWEA-State Water Board Training Modules
CWEA-State Water Board Training Modules
Five online training modules are coming soon.
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State Water Board Notice to Agencies Regulated by WDR

View CWEA’s WDR resource page > In December 2022, the State Water Resources Control Board adopted statewide Sanitary Sewer Systems General Order 2022-0103-DWQ that replaces the existing statewide Order 2006-0003-DWQ as of its effective date of June 5, 2023. The existing Order 2006-0003-DWQ (also referred to as the “WDRs”), and existing regulatory coverage for sewer…

How to Tips for Spill Emergency Plans aka SERPs

Visit CWEA’s WDR training and resources page > Having been an inspector for the State Water Board’s Office of Enforcement for a decade with over 100 collection system inspections, as well as an independent consultant for more than a dozen years, CWEA members often ask me: What does Emergency Response Plan (ERP) compliance look like?…

State Water Board Adopts New Statewide Sanitary Sewer System Regulations

The State Water Resources Control Board adopted a statewide Sanitary Sewer System General Order that implements and expands policies to address statewide water infrastructure needs. The new order replaces an existing order and expands regulatory requirements to include privately owned systems, at the discretion of the applicable California Regional Water Quality Control Board. It also…

State Water Board Approves New Sanitary Sewer System Waste Discharge Requirements

Discussions on updating the Sanitary Sewer System regulations have been ongoing over the last four years and after a four-hour State Water Board meeting, the new regulations were approved unanimously, and implementation now begins. Originally implemented in 2006, the reissued Waste Discharge Requirements (WDR) was debated and discussed during the December 6th Board meeting in…

Legal View: State Water Board Adopts Sanitary Sewer Systems Waste Discharge Requirements

After nearly four years of negotiations, the California State Water Resources Control Board (State Water Board) considered and unanimously adopted the Statewide Sanitary Sewer Systems General Waste Discharge Requirements Order Reissuance (SSS WDR) with late changes on December 6, 2022. The SSS WDR regulates sanitary sewer systems designed to convey sewage longer than one mile…

San Diego Regional Board Orders 10 Agencies to Investigate Sewer Leaks, Stormwater Contamination

A press release from the San Diego Regional Water Quality Board… Ten public agencies suspected of discharging human fecal waste into the Lower San Diego River and its tributaries today were ordered to investigate and identify the sources of the harmful material and report the extent of their involvement to the San Diego Water Board….

Proposed Statewide Sanitary Sewer Systems Order Reissuance

Upcoming events: CWEA’s annual WDR training workshops will be held in May. Workshops will be held in San Ramon (May 8th); San Luis Obispo (May 15th); and Los Angeles (May 22nd).  One of the most talked-about topics is the update to the Statewide Sanitary Sewer Systems General Order.  The State Water Board is holding five…

Valentine’s Day Storm Slams California, Pushing Water Agencies to the Edge

“Atmospheric River” is a meteorological term coined in the 1990s that’s recently entered common public usage. They are bands of concentrated moisture traveling in the air over a region.  Atmospheric rivers can contain as much moisture as major river, such as the Amazon. On February 5th, the Scripps’ Center for Western Weather and Water Extremes…

Recorded Webinar: Sewer Lateral Management Strategies

Coverage of asset management topics is supported by MentorAPM  November 14th, 2018 Uncovering Sewer Laterals: How to Optimize Your Lateral Strategy Managing sewer laterals is challenging. Learn about the “Lateral Strategy Toolbox”, hear agency stories about success and challenges, and find ways to maximize the benefits of improving laterals – while balancing the impacts to…

Leader Q&A: Should California Require Collection System Certification?

Two collection system leaders discuss the importance of certification and the role training and technology have in the massive reduction in Sanitary Sewer Overflows. Daryl Lauer is the Collections Superintendent for Carmel Area Wastewater District the Chair of CWEA’s Collection Systems Committee. Ken Merkle is the Senior Collection Systems Supervisor for the City of Stockton…

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