Public water system · CA0710008
ActiveCity of Pittsburg
At a glance
City of Pittsburg (PWSID CA0710008) is an active community water system in Contra Costa County, California. It reports serving 62,500 people through 19,534 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; none is health-based, and the most recent began in April 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
62,500
Service connections
19,534
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Pittsburg compare with other water systems in Contra Costa County?
By EPA's size categories, City of Pittsburg is a large system (10,001 to 100,000 people). Contra Costa County has 84 active public water systems, and City of Pittsburg is the 4th-largest of them by population served. Its population served is about 9.3 times the county average of 6,726 people per system, and accounts for 11% of the 564,952 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 City of Pittsburg is about 9.3 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 City of Pittsburg?
EPA lists City of Pittsburg 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. 25 of the 84 active systems in Contra Costa County (30%) are also owned by a local government.
Does City of Pittsburg have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2002. The violations listed here began between September 2001 and April 2002. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). 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 |
|---|---|---|---|---|
| 2002-04-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-09-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | 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.
City of Pittsburg: frequently asked questions
Who runs City of Pittsburg?
City of Pittsburg (PWSID CA0710008) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does City of Pittsburg serve?
City of Pittsburg reports serving 62,500 people through 19,534 service connections in Contra Costa County, California.
Where does City of Pittsburg 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 City of Pittsburg have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2002. 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 City of Pittsburg'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; none is health-based, and the most recent began in April 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find City of Pittsburg's water quality report?
As a community water system, City of Pittsburg 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 Contra Costa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Contra Costa Water District | Contra Costa | 198,000 | Community | Surface water |
| City of Antioch | Contra Costa | 115,074 | Community | Surface water |
| Brentwood | Contra Costa | 64,513 | Community | Purchased surface water |
| Diablo Water District | Contra Costa | 43,357 | Community | Purchased surface water |
| City of Martinez | Contra Costa | 30,997 | Community | Purchased surface water |
| Golden State Water Company - Bay Point | Contra Costa | 23,731 | 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, “City of Pittsburg, PWSID CA0710008, California”, https://aquacensus.com/water-systems/california/city-of-pittsburg-ca0710008 (data as of October 1, 2026).