Public water system · NV0000248
ActiveWinnemucca City of
At a glance
City of Winnemucca (PWSID NV0000248) is an active community water system in Humboldt County, Nevada. It reports serving 8,518 people through 3,934 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,518
Service connections
3,934
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Winnemucca compare with other water systems in Humboldt County?
By EPA's size categories, City of Winnemucca is a medium system (3,301 to 10,000 people). Humboldt County has 27 active public water systems, and City of Winnemucca is the largest of them by population served. Its population served is about 17 times the county average of 511 people per system, and accounts for 62% of the 13,801 people reported by systems filed under the county. Across Nevada, the 643 active systems average 5,508 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Winnemucca is about 27% above 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. Nevada has 224 active community water systems, 35% of the state's 643 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 557 Nevada systems (87%) list groundwater as their primary source.
Who owns and regulates City of Winnemucca?
EPA lists City of Winnemucca as owned by a local government. The NV state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 7 of the 27 active systems in Humboldt County (26%) are also owned by a local government.
Does City of Winnemucca have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2024. The violations listed here began between April 2004 and July 2024. By type: 10 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (4 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 |
|---|---|---|---|---|
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-06-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2013-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | 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.
City of Winnemucca: frequently asked questions
Who runs City of Winnemucca?
City of Winnemucca (PWSID NV0000248) is a community water system owned by a local government. It is regulated by the NV state drinking water program.
How many people does City of Winnemucca serve?
City of Winnemucca reports serving 8,518 people through 3,934 service connections in Humboldt County, Nevada.
Where does City of Winnemucca 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 Winnemucca have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 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 Winnemucca'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, 2 are health-based, and the most recent began in July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NV state drinking water program.
Where can I find City of Winnemucca's water quality report?
As a community water system, City of Winnemucca 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 Humboldt County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Gold Country Estates | Humboldt | 1,695 | Community | Groundwater |
| Nevada Gold Mines Twin Creeks | Humboldt | 600 | Non-transient non-community | Groundwater |
| Nevada Gold Mines Turquoise Ridge | Humboldt | 480 | Non-transient non-community | Groundwater |
| Marigold Mine Potable Water System | Humboldt | 450 | Non-transient non-community | Groundwater |
| Ndot Valmy Roadside Park Rp809hu | Humboldt | 367 | Transient non-community | Groundwater |
| Star City Properties | Humboldt | 285 | 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, “Winnemucca City of, PWSID NV0000248, Nevada”, https://aquacensus.com/water-systems/nevada/winnemucca-city-of-nv0000248 (data as of October 1, 2026).