Public water system · CA3510002
ActiveSan Juan Bautista, City of
At a glance
City of San Juan Bautista (PWSID CA3510002) is an active community water system in San Benito County, California. It reports serving 2,335 people through 834 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,335
Service connections
834
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of San Juan Bautista compare with other water systems in San Benito County?
By EPA's size categories, City of San Juan Bautista is a small system (501 to 3,300 people). San Benito County has 63 active public water systems, and City of San Juan Bautista is the 6th-largest of them by population served. Its population served is about 78% above the county average of 1,312 people per system, and accounts for 2.8% 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 City of San Juan Bautista is about 65% 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates City of San Juan Bautista?
EPA lists City of San Juan Bautista 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. 11 of the 63 active systems in San Benito County (17%) are also owned by a local government.
Does City of San Juan Bautista have drinking water violations?
EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in October 2024. The violations listed here began between July 1993 and October 2024. By type: 6 contaminant level above the legal limit, 2 public notice, recordkeeping or other, 1 required treatment not met, 1 reporting and 1 monitoring and reporting. The contaminant or rule involved most often is Nitrate-Nitrite (3 of them). EPA lists 9 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2017-10-01 | Public notice, recordkeeping or otherVariance/Exemption/Other Compliance · code 08 | Not reported | No | Resolved |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitrate-Nitritecode 1038 | Yes | Resolved |
| 2017-07-01 | Public notice, recordkeeping or otherVariance/Exemption/Other Compliance · code 08 | Not reported | No | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitrate-Nitritecode 1038 | Yes | Resolved |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitrate-Nitritecode 1038 | Yes | Resolved |
| 2014-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2002-06-25 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 1999-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 11 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 San Juan Bautista: frequently asked questions
Who runs City of San Juan Bautista?
City of San Juan Bautista (PWSID CA3510002) 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 San Juan Bautista serve?
City of San Juan Bautista reports serving 2,335 people through 834 service connections in San Benito County, California.
Where does City of San Juan Bautista get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of San Juan Bautista have any drinking water violations?
EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in October 2024. 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 San Juan Bautista'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 11 violations for this system; 7 are health-based, and the most recent began in October 2024. 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 San Juan Bautista's water quality report?
As a community water system, City of San Juan Bautista 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 |
| Sunnyslope County Water Dist | San Benito | 24,954 | 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 |
| 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, “San Juan Bautista, City of, PWSID CA3510002, California”, https://aquacensus.com/water-systems/california/san-juan-bautista-city-of-ca3510002 (data as of October 1, 2026).