Follow these required actions for the construction of your project
Download the SMR and associated appendices (i.e. GI Typical Details and Specifications)
Stormwater Control Plan Instructions and materials, BMP Calculators, Self-Certification Checklists, etc.
Managing stormwater, which may otherwise wash pollutants into our waterways or overwhelm our sewer system, is critical to protecting water quality, wildlife, and public health. Like many California municipal agencies, the SFPUC administers a stormwater management program developed in accordance with the Clean Water Act. Effective May 22, 2010 and updated in 2016, the San Francisco Stormwater Management Ordinance (SMO) requires new and redevelopment projects to manage stormwater using green infrastructure (i.e. stormwater controls or best management practices) and to maintain that green infrastructure for the lifetime of the project.
Stormwater Management at a Glance
To manage stormwater that may otherwise wash pollutants into San Francisco waterways or overwhelm the City’s sewer system, and protect water quality, wildlife, and public health.
Who Must Comply?
New and redevelopment projects that create and/or replace: (1) ≥5,000 square feet of impervious surface in separate and combined sewer areas; or (2) ≥2,500 square feet of impervious surface in separate sewer areas.
Public Works Code, Article 4.2 Sections 147-147.6
SMR Summary Flyer
SMR Frequently Asked Questions
Urban Watershed Management Program
The Stormwater Management Requirements and Design Guidelines (SMR) outlines the mandatory requirements for managing post-construction stormwater runoff and provides guidance on how to incorporate green infrastructure into site design.
Do the requirements apply to my project?
The SMR applies to the following project types:
new and redevelopment projects that create and/or replace ≥5,000 square feet of impervious surface in the separate and combined sewer areas; and
new and redevelopment projects that create and/or replace 2,500-5,000 square feet of impervious surface in separate sewer areas.
Activities that create or replace impervious surface include, but are not limited to, the construction, modification, conversion, or alteration of any building or structure and the creation or replacement of outdoor impervious surfaces such as parking areas, driveways, or private street areas.
The SMR does not apply to the following activities:
- pavement maintenance activities such as top-layer asphalt grinding and repaving within the existing footprint;
- replacement of existing sidewalks and streets dedicated to and accepted by the City;
- interior remodeling projects;
- exterior wall surface replacement; or
- utility repair work requiring trenching or excavation with in-kind surface replacement.