Public water system · 093200161
ActiveWashoe Tribe Carson Colony
At a glance
Washoe Tribe Carson Colony (PWSID 093200161) is an active community water system in Nevada. It reports serving 450 people through 93 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
450
Service connections
93
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Washoe Tribe Carson Colony compare with other water systems in Nevada?
By EPA's size categories, Washoe Tribe Carson Colony is a very small system (500 people or fewer). Across Nevada, the 643 active systems average 5,508 people each. Nationally, the average active community water system reports serving 6,703 people, so Washoe Tribe Carson Colony 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. 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 Washoe Tribe Carson Colony?
EPA lists Washoe Tribe Carson Colony as Native American-owned. The EPA Region 09 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Washoe Tribe Carson Colony have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in April 2023. The violations listed here began between March 2013 and April 2023. By type: 8 monitoring and reporting, 1 reporting, 1 required treatment not met, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (3 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 |
|---|---|---|---|---|
| 2023-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Resolved |
| 2019-12-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-27 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-04-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2013-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2013-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Washoe Tribe Carson Colony: frequently asked questions
Who runs Washoe Tribe Carson Colony?
Washoe Tribe Carson Colony (PWSID 093200161) is a community water system Native American-owned. It is regulated by the EPA Region 09.
How many people does Washoe Tribe Carson Colony serve?
Washoe Tribe Carson Colony reports serving 450 people through 93 service connections in Nevada.
Where does Washoe Tribe Carson Colony 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 Washoe Tribe Carson Colony 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 April 2023. 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 Washoe Tribe Carson Colony'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 April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 09.
Where can I find Washoe Tribe Carson Colony's water quality report?
As a community water system, Washoe Tribe Carson Colony 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
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Las Vegas Valley Water District | Clark | 1,539,277 | Community | Purchased surface water |
| Truckee Meadows Water Authority | Washoe | 442,000 | Community | Surface water |
| North Las Vegas Utilities | Clark | 376,515 | Community | Purchased surface water |
| Henderson City of | Clark | 336,534 | Community | Purchased surface water |
| Carson City Public Works | — | 59,000 | Community | Surface water |
| Robinson Creek Campground | Mono | 50,562 | 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, “Washoe Tribe Carson Colony, PWSID 093200161, Nevada”, https://aquacensus.com/water-systems/nevada/washoe-tribe-carson-colony-093200161 (data as of October 1, 2026).