Public water system · CA2910016
ActiveDonner Summit Public Utility District
At a glance
Donner Summit Public Utility District (PWSID CA2910016) is an active community water system in Nevada County, California. It reports serving 310 people through 366 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in October 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
310
Service connections
366
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Donner Summit Public Utility District compare with other water systems in Nevada County?
By EPA's size categories, Donner Summit Public Utility District is a very small system (500 people or fewer). Nevada County has 82 active public water systems. Its population served is well below the county average of 1,263 people per system, and accounts for 0.3% of the 103,540 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 Donner Summit Public Utility District 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 Donner Summit Public Utility District?
EPA lists Donner Summit Public Utility District 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. 19 of the 82 active systems in Nevada County (23%) are also owned by a local government.
Does Donner Summit Public Utility District have drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in October 2022. The violations listed here began between August 1992 and October 2022. By type: 10 required treatment not met and 2 monitoring and reporting. The contaminant or rule involved most often is Surface Water Treatment Rule (11 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2022-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2019-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2009-09-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2009-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2008-12-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2008-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2008-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2008-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2007-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2007-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1992-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
The 12 most recent 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.
Donner Summit Public Utility District: frequently asked questions
Who runs Donner Summit Public Utility District?
Donner Summit Public Utility District (PWSID CA2910016) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Donner Summit Public Utility District serve?
Donner Summit Public Utility District reports serving 310 people through 366 service connections in Nevada County, California.
Where does Donner Summit Public Utility District 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 Donner Summit Public Utility District have any drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in October 2022. 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 Donner Summit Public Utility District'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. Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in October 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Donner Summit Public Utility District's water quality report?
As a community water system, Donner Summit Public Utility District 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 Nevada County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Truckee-Donner PUD, Main | Nevada | 36,730 | Community | Groundwater |
| Nevada Id - E. George, Banner Mountain | Nevada | 17,154 | Community | Surface water |
| Nevada Id - Loma Rica | Nevada | 14,072 | Community | Surface water |
| Nevada Id - Lake Wildwood | Nevada | 9,108 | Community | Surface water |
| Nevada Id - Lake of Pines | Nevada | 6,870 | Community | Surface water |
| City of Grass Valley | Nevada | 4,947 | 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, “Donner Summit Public Utility District, PWSID CA2910016, California”, https://aquacensus.com/water-systems/california/donner-summit-public-utility-district-ca2910016 (data as of October 1, 2026).