Public water system · CA2910003
ActiveTruckee-Donner PUD, Main
At a glance
Truckee-Donner PUD, Main (PWSID CA2910003) is an active community water system in Nevada County, California. It reports serving 36,730 people through 13,657 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
36,730
Service connections
13,657
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Truckee-Donner PUD, Main compare with other water systems in Nevada County?
By EPA's size categories, Truckee-Donner PUD, Main is a large system (10,001 to 100,000 people). Nevada County has 82 active public water systems, and Truckee-Donner PUD, Main is the largest of them by population served. Its population served is about 29 times the county average of 1,263 people per system, and accounts for 35% 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 Truckee-Donner PUD, Main is about 5.5 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. 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 Truckee-Donner PUD, Main?
EPA lists Truckee-Donner PUD, Main 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 Truckee-Donner PUD, Main have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2009. The violations listed here began between August 1996 and July 2009. By type: 2 contaminant level above the legal limit. The contaminants or rules involved are Arsenic and Total coliform bacteria (TCR). EPA lists 2 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 |
|---|---|---|---|---|
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 1996-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 2 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.
Truckee-Donner PUD, Main: frequently asked questions
Who runs Truckee-Donner PUD, Main?
Truckee-Donner PUD, Main (PWSID CA2910003) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Truckee-Donner PUD, Main serve?
Truckee-Donner PUD, Main reports serving 36,730 people through 13,657 service connections in Nevada County, California.
Where does Truckee-Donner PUD, Main 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 Truckee-Donner PUD, Main have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 2009. 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 Truckee-Donner PUD, Main'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 2 violations for this system; all are health-based, and the most recent began in July 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Truckee-Donner PUD, Main's water quality report?
As a community water system, Truckee-Donner PUD, Main 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 |
|---|---|---|---|---|
| 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 |
| City of Nevada City | Nevada | 3,148 | 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, “Truckee-Donner PUD, Main, PWSID CA2910003, California”, https://aquacensus.com/water-systems/california/truckee-donner-pud-main-ca2910003 (data as of October 1, 2026).