Public water system · CA3810003
ActiveHhw&P Moccasin Compound-Sfpuc
At a glance
Hhw&P Moccasin Compound-Sfpuc (PWSID CA3810003) is an active community water system in San Francisco County, California. It reports serving 410 people through 89 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
410
Service connections
89
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Hhw&P Moccasin Compound-Sfpuc compare with other water systems in San Francisco County?
By EPA's size categories, Hhw&P Moccasin Compound-Sfpuc is a very small system (500 people or fewer). San Francisco County has 8 active public water systems. Its population served is well below the county average of 130,038 people per system, and accounts for less than 0.1% 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 Hhw&P Moccasin Compound-Sfpuc is well below 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 Hhw&P Moccasin Compound-Sfpuc?
EPA lists Hhw&P Moccasin Compound-Sfpuc 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 Hhw&P Moccasin Compound-Sfpuc have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 1996. The violations listed here began between June 1993 and January 1996. By type: 1 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Total coliform bacteria (TCR) and Surface Water Treatment Rule. EPA lists 2 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1996-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
All 2 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Hhw&P Moccasin Compound-Sfpuc: frequently asked questions
Who runs Hhw&P Moccasin Compound-Sfpuc?
Hhw&P Moccasin Compound-Sfpuc (PWSID CA3810003) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Hhw&P Moccasin Compound-Sfpuc serve?
Hhw&P Moccasin Compound-Sfpuc reports serving 410 people through 89 service connections in San Francisco County, California.
Where does Hhw&P Moccasin Compound-Sfpuc 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 Hhw&P Moccasin Compound-Sfpuc have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 1996. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Hhw&P Moccasin Compound-Sfpuc'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 records list 2 violations for this system; 1 is health-based, and the most recent began in January 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Hhw&P Moccasin Compound-Sfpuc's water quality report?
As a community water system, Hhw&P Moccasin Compound-Sfpuc 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 |
|---|---|---|---|---|
| Sfpuc City Distribution Division | San Francisco | 848,019 | Community | Purchased surface water |
| 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Hhw&P Moccasin Compound-Sfpuc, PWSID CA3810003, California”, https://aquacensus.com/water-systems/california/hhw-p-moccasin-compound-sfpuc-ca3810003 (data as of October 1, 2026).