Public water system · CA4010026
ActiveNipomo Comm Services Dist
At a glance
Nipomo Comm Services Dist (PWSID CA4010026) is an active community water system in San Luis Obispo County, California. It reports serving 13,771 people through 4,512 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in January 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
13,771
Service connections
4,512
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Nipomo Comm Services Dist compare with other water systems in San Luis Obispo County?
By EPA's size categories, Nipomo Comm Services Dist is a large system (10,001 to 100,000 people). San Luis Obispo County has 171 active public water systems. Its population served is about 6.8 times the county average of 2,038 people per system, and accounts for 4% of the 348,510 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 Nipomo Comm Services Dist is about twice 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 Nipomo Comm Services Dist?
EPA lists Nipomo Comm Services Dist 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. 33 of the 171 active systems in San Luis Obispo County (19%) are also owned by a local government.
Does Nipomo Comm Services Dist have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in January 2008. The violations listed here began between November 1994 and January 2008. By type: 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2008-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 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.
Nipomo Comm Services Dist: frequently asked questions
Who runs Nipomo Comm Services Dist?
Nipomo Comm Services Dist (PWSID CA4010026) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Nipomo Comm Services Dist serve?
Nipomo Comm Services Dist reports serving 13,771 people through 4,512 service connections in San Luis Obispo County, California.
Where does Nipomo Comm Services Dist 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 Nipomo Comm Services Dist have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in January 2008. 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 Nipomo Comm Services Dist'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 4 violations for this system; 1 is health-based, and the most recent began in January 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Nipomo Comm Services Dist's water quality report?
As a community water system, Nipomo Comm Services Dist 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 Luis Obispo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Santa Margarita Recreation Area | San Luis Obispo | 50,001 | Transient non-community | Groundwater |
| San Luis Obispo Water Department | San Luis Obispo | 47,788 | Community | Surface water |
| City of Paso Robles Water Division | San Luis Obispo | 31,176 | Community | Surface water |
| Atascadero Mutual Water Co | San Luis Obispo | 30,618 | Community | Groundwater |
| City of Arroyo Grande Utilities Division | San Luis Obispo | 17,963 | Community | Purchased surface water |
| California Mens Colony | San Luis Obispo | 15,000 | Community | 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, “Nipomo Comm Services Dist, PWSID CA4010026, California”, https://aquacensus.com/water-systems/california/nipomo-comm-services-dist-ca4010026 (data as of October 1, 2026).