Public water system · CA5510006
ActiveMi Wuk Village Mut Wtr Co
At a glance
Mi Wuk Village Mut Wtr Co (PWSID CA5510006) is an active community water system in Tuolumne County, California. It reports serving 2,163 people through 766 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,163
Service connections
766
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mi Wuk Village Mut Wtr Co compare with other water systems in Tuolumne County?
By EPA's size categories, Mi Wuk Village Mut Wtr Co is a small system (501 to 3,300 people). Tuolumne County has 117 active public water systems. Its population served is about 3.1 times the county average of 706 people per system, and accounts for 2.6% of the 82,611 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 Mi Wuk Village Mut Wtr Co 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Mi Wuk Village Mut Wtr Co?
EPA lists Mi Wuk Village Mut Wtr Co 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. 75 of the 117 active systems in Tuolumne County (64%) are also privately owned.
Does Mi Wuk Village Mut Wtr Co have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2025. The violations listed here began between January 2005 and April 2025. By type: 4 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2025-04-01 | MonitoringMonitoring, Lab Certification/Method Error (RTCR) · code 3D | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2007-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
All 6 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.
Mi Wuk Village Mut Wtr Co: frequently asked questions
Who runs Mi Wuk Village Mut Wtr Co?
Mi Wuk Village Mut Wtr Co (PWSID CA5510006) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mi Wuk Village Mut Wtr Co serve?
Mi Wuk Village Mut Wtr Co reports serving 2,163 people through 766 service connections in Tuolumne County, California.
Where does Mi Wuk Village Mut Wtr Co get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Mi Wuk Village Mut Wtr Co have any drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2025. 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 Mi Wuk Village Mut Wtr Co'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 6 violations for this system; 1 is health-based, and the most recent began in April 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Mi Wuk Village Mut Wtr Co's water quality report?
As a community water system, Mi Wuk Village Mut Wtr Co 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 Tuolumne County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tud - Upper Basin Water System | Tuolumne | 13,280 | Community | Surface water |
| Tud - Sonora/Jamestown Water System | Tuolumne | 11,054 | Community | Surface water |
| Tud - Columbia Water System | Tuolumne | 5,463 | Community | Surface water |
| Peppery Bar and Grill, the | Tuolumne | 4,500 | Transient non-community | Groundwater |
| Cdcr - Sierra Conservation Center | Tuolumne | 3,571 | Community | Surface water |
| Groveland Community Serv Dist | Tuolumne | 3,400 | 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, “Mi Wuk Village Mut Wtr Co, PWSID CA5510006, California”, https://aquacensus.com/water-systems/california/mi-wuk-village-mut-wtr-co-ca5510006 (data as of October 1, 2026).