Social distancing is in effect due to the COVID-19 pandemic. Most copermittee staff are teleworking and available by email. To email the watershed representative for your jurisdiction, please visit our contact us page. For more information and resources on COVID-19 in the San Diego region, please visit

Welcome To Project Clean Water

A Web-based portal that provides a centralized point of access to water quality information and resources for the San Diego County, South Orange County and South Riverside County.
Photography By: Brianna Martin, Francesca DeLeon and Minell Enslin.

About Project Clean Water

Project Clean Water was initiated in July 2000 to provide a broad and inclusive forum for exploring water quality issues of regional significance. Much of the focus during our first two years was on establishing a visible forum to discuss issues of shared concern, to find consensus solutions to priority problems, and to characterize baseline conditions in the region’s watersheds. This work was primarily carried out by Technical Advisory Committees (TACs) and numerous, ad hoc technical workgroups. Annual Clean Water Summits, a focal point of stakeholder participation, have provided an important opportunity to explore the issue of the day and validate and fine-tune the priorities and directions of Project Clean Water working bodies.

In response to input provided by participants, organizational changes were put into place in 2004 to streamline the overall Project Clean Water process and to focus more closely on the issues of greatest interest to stakeholders. Through discussion that occurred at the Watershed Protection TAC, the County of San Diego, the San Diego County Water Authority and the City of San Diego Water Department agreed to form a Regional Water Management Group (RWMG) which was needed to fund and develop an Integrated Regional Water Management Plan for the San Diego Region. The Watershed Protection TAC became the first stakeholder group supporting the development of this Plan.

Today, Project Clean Water serves as a resource both to government agencies and to the general public. In 2013, the San Diego Regional Water Quality Control Board (RWQCB) issued an updated National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm and Sewer System (MS4) Permit Order No. R9-2013-0001 (as amended by Order Nos. R9-2015-0001 and R9-2015-0100), which requires those agencies operating under the permit to create and maintain a Regional Clearinghouse that provides the public with information regarding area water quality and efforts to protect it. This information was made accessible via Project Clean Water, which allows for additional cooperation and coordination between Copermittees to supplement and enhance water quality outcomes.


Minor Modifications to Table 1-2 and Section 1.4.1 of Model BMP Design Manual

The following minor edits were made to the May 2018 Model BMP Design Manual: Section 1.3, Table 1-2, Page 1-6. Applicability of Permanent, Post-Construction Storm Water Requirements. Removed “Maintenance activities that are part of a larger master planning effort…” Section 1.4.1.(f), Page 1-9. New or redevelopment projects that result in the disturbance of one or …

Minor Modifications to Table 1-2 and Section 1.4.1 of Model BMP Design Manual Read More »

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Don’t Rush to Flush — Flushing Do’s and Don’ts

Flushing Do’s and Don’ts Did you know that wipes, paper towels and similar products, when flushed down toilets, do not break down properly and can cause significant problems for our sewer system and treatment plants? And don’t be fooled by those products labeled as ‘flushable’ – they are not compatible with sewer systems, the material …

Don’t Rush to Flush — Flushing Do’s and Don’ts Read More »

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Update to May 2018 Carlsbad WQIP Creates Escondido Creek HMP Exemption

An update to the May 2018 Carlsbad Water Quality Improvement Plan (WQIP) includes the Escondido Creek HMP Exemption. Documents related to the Carlsbad WQIP are available for download.
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Sun Mon Tue Wed Thu Fri Sat
San Diego Bay and Tijuana River Watersheds Monthly Meeting 10:00 am
San Diego Bay and Tijuana River Watersheds Monthly Meeting @ Phone conference
Aug 18 @ 10:00 am – 12:00 pm
Meeting is via conference call/screen share only.  An agenda with details will be distributed before the meeting.
Program Planning Subcommittee Meeting 1:30 pm
Program Planning Subcommittee Meeting @ County of San Diego – County Operations Center
Aug 20 @ 1:30 pm – 3:30 pm