Public water system · CA3810011
ActiveSfpuc City Distribution Division
At a glance
Sfpuc City Distribution Division (PWSID CA3810011) is an active community water system in San Francisco County, California. It reports serving 848,019 people through 171,099 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
848,019
Service connections
171,099
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Sfpuc City Distribution Division compare with other water systems in San Francisco County?
By EPA's size categories, Sfpuc City Distribution Division is a very large system (more than 100,000 people). San Francisco County has 8 active public water systems, and Sfpuc City Distribution Division is the largest of them by population served. Its population served is about 6.5 times the county average of 130,038 people per system, and accounts for 82% of the 1,040,304 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Sfpuc City Distribution Division is about 127 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 506 California systems (6.8%) list purchased surface water as their primary source.
Who owns and regulates Sfpuc City Distribution Division?
EPA lists Sfpuc City Distribution Division as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 8 active systems in San Francisco County (75%) are also owned by a local government.
Does Sfpuc City Distribution Division have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Sfpuc City Distribution Division. For the latest compliance status, check EPA ECHO for current compliance history.
Sfpuc City Distribution Division: frequently asked questions
Who runs Sfpuc City Distribution Division?
Sfpuc City Distribution Division (PWSID CA3810011) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Sfpuc City Distribution Division serve?
Sfpuc City Distribution Division reports serving 848,019 people through 171,099 service connections in San Francisco County, California.
Where does Sfpuc City Distribution Division get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Sfpuc City Distribution Division have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Sfpuc City Distribution Division's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Sfpuc City Distribution Division's water quality report?
As a community water system, Sfpuc City Distribution Division must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in San Francisco County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| San Francisco International Airport | San Francisco | 183,386 | Non-transient non-community | Purchased surface water |
| Treasure Island | San Francisco | 3,864 | Community | Purchased surface water |
| Presidio of San Francisco | San Francisco | 3,500 | Community | Surface water |
| San Francisco Regional Water System | San Francisco | 600 | Community | Surface water |
| Hhw&P-O'Shaughnessy Dam Cpd-Sfpuc | San Francisco | 495 | Transient non-community | Surface water |
| Hhw&P Moccasin Compound-Sfpuc | San Francisco | 410 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Sfpuc City Distribution Division, PWSID CA3810011, California”, https://aquacensus.com/water-systems/california/sfpuc-city-distribution-division-ca3810011 (data as of October 1, 2026).