Public water system · CA3510003
ActiveSunnyslope County Water Dist
At a glance
Sunnyslope County Water Dist (PWSID CA3510003) is an active community water system in San Benito County, California. It reports serving 24,954 people through 7,688 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; all are health-based, and the most recent began in October 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
24,954
Service connections
7,688
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Sunnyslope County Water Dist compare with other water systems in San Benito County?
By EPA's size categories, Sunnyslope County Water Dist is a large system (10,001 to 100,000 people). San Benito County has 63 active public water systems, and Sunnyslope County Water Dist is the 2nd-largest of them by population served. Its population served is about 19 times the county average of 1,312 people per system, and accounts for 30% of the 82,670 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 Sunnyslope County Water Dist is about 3.7 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 Sunnyslope County Water Dist?
EPA lists Sunnyslope County Water Dist as privately owned. 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. 46 of the 63 active systems in San Benito County (73%) are also privately owned.
Does Sunnyslope County Water Dist have drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in October 1996. The violations listed here began between June 1995 and October 1996. By type: 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 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 |
|---|---|---|---|---|
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1996-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Sunnyslope County Water Dist: frequently asked questions
Who runs Sunnyslope County Water Dist?
Sunnyslope County Water Dist (PWSID CA3510003) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Sunnyslope County Water Dist serve?
Sunnyslope County Water Dist reports serving 24,954 people through 7,688 service connections in San Benito County, California.
Where does Sunnyslope County Water 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 Sunnyslope County Water Dist have any drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in October 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 Sunnyslope County Water 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; all are health-based, and the most recent began in October 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 Sunnyslope County Water Dist's water quality report?
As a community water system, Sunnyslope County Water 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 Benito County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hollister, City of | San Benito | 26,017 | Community | Purchased surface water |
| 33rd District Agricultural Association | San Benito | 9,000 | Transient non-community | Groundwater |
| San Benito High School | San Benito | 3,310 | Non-transient non-community | Groundwater |
| Aromas Water District | San Benito | 2,988 | Community | Groundwater |
| San Juan Bautista, City of | San Benito | 2,335 | Community | Groundwater |
| Pinnacles National Park-East District | San Benito | 1,811 | Transient non-community | Groundwater |
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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, “Sunnyslope County Water Dist, PWSID CA3510003, California”, https://aquacensus.com/water-systems/california/sunnyslope-county-water-dist-ca3510003 (data as of October 1, 2026).