California sewer agencies and district staff

Which agency runs the sewer system?

Free checklist for updating a California sewer system management plan under the 2022 statewide order: the 11 elements, due dates and audits.

  • Free to read
  • No sign-up until the draft
  • Hands off to the right door
Project site

ePlan fills in

  • Population served
  • Receiving waters

How it works

SSMP update checklist, from one answer

  1. Name your agency and how many people it serves.
  2. ePlan sets your due dates and lays out the 11 plan elements. Your staff supply the system data.
  3. Read the free checklist. Also run a storm sewer system? Start an MS4 annual report draft.

What you get

SSMP update checklist and 1 more document

The check is free. The paperwork after it is drafted at the MS4 annual report door.

The first draft

SSMP update checklist (free)

  1. 1. Goal and introduction
  2. 2. Organization
  3. 3. Legal authority
  4. 4. Operation and maintenance program
  5. 5. Design and performance provisions
  6. 6. Spill emergency response plan

Modeled on: State Water Board Order WQ 2022-0103-DWQ, Attachment D

Next · 2

MS4 annual report

  1. Six minimum measures
  2. Illicit discharges
  3. Changes next year

From public data

What ePlan fills in, and from where

Every 6 years

a California sewer agency must update its sewer system management plan, with an internal audit every 3 years
Source: State Water Board Order WQ 2022-0103-DWQ

Ready for the paperwork?

Draft your town's MS4 annual report and stormwater management program from last year's report and this year's counts. Free to read, pay to download.

MS4 annual report →

Questions

Sewer System Management Plan: what people ask

Who needs a sewer system management plan?

Public agencies in California that own or operate a sanitary sewer system more than 1 mile long, under State Water Board Order WQ 2022-0103-DWQ, adopted December 6, 2022 and effective June 5, 2023.

Source: waterboards.ca.gov

How often must it be updated?

The plan is updated every six years. An internal audit is done every three years and is due within six months after the end of each audit period.

Source: waterboards.ca.gov

When was the first update due?

By population served: over 100,000, May 2, 2025; 10,000 to 100,000, August 2, 2025; 2,500 to 10,000, May 2, 2026; under 2,500, August 2, 2026.

Source: waterboards.ca.gov

The rules this door follows