Sewer System Management Plan (SSMP) Reporting

The District is required to develop and implement a sewer system management plan (SSMP).

The SSMP addresses the following elements:

1. Goals
2. Organization
3. Legal Authority
4. Operations and Maintenance Program
5. Design and Performance Standards
6. Overflow Emergency Response Plan
7. Fats, Oils and Grease (FOG) Control Program
8. System Evaluation and Capacity Assurance Plan
9. Monitoring, Measurement and Program Modifications
10. SSMP Program Audits
11. Communications Program

It also includes an Appendix - Log of SSMP Changes

• SWRCB Order No. 2006-0003, Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, California SCWRCB, May 2, 2006.

• SWRCB Order No. WQ-2008-0002-EXEC, Adopting Amended Monitoring and Reporting Requirements for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems dated February 20, 2008.

• SWRCB Order No. Order No. 2013-0058-EXEC, Amending Monitoring and Reporting Program for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems, September 9, 2013.

• SWRCB Order WQ 2022-0103-DWQ Statewide Waste Discharge Requirements General Order for Sanitary Sewer Systems, dated December 6, 2022.

• Agreement For Sewage Disposal Between the City and County of San Francisco, The Westborough County Water District And The North San Mateo County Sanitation District dated March 26, 2007.

• North San Mateo County Sanitation District Code Title 1, Sewer System Usage.

• Westborough Water District Ordinance No. 61.

• Westborough Water District Standard Drawings, December 2018.

• Daly City Standard Drawings SS-5, 6, 10 and 11.

• A 5-Year Sewer Capital Improvement Projects can be found under Organization - Capital Improvements.

• Hyperlink to the public information CIWQS page where then WDID would be used to check WWD historic information.

Agency: Westborough Water District
Sanitary Sewer System: Westborough CS
WDID: 2SSO10665

• SERP

• WQMP

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Current SSMP

The Sewer System Management Plan (SSMP) has been prepared by the General Manager who is also the Legally Responsible Official (LRO) with the assistance of a District Consultant. Click here to download the 2025 SSMP, approved by WWD Board of Directors on July 24, 2025, by Resolution No. 691, Adopting an Updated Sewer System Management Plan, an Overflow Emergency Response Plan, and a Water Quality Monitoring Plan.

As required, the WWD performs an internal audit of the program every three (3) years and it is updated and re-certified by the Board of Directors every six (6) years.

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SSMP Internal Audit Report

The 2021 Internal Audit Report covers the period of July 2018 thru June 2021. Click here to download the 2021 Internal Audit Report (PDF). The District is currently working on an updated Internal Audit Report.