Public water system · NV0002028
ActiveLahontan Dam State Park
At a glance
Lahontan Dam State Park (PWSID NV0002028) is an active transient non-community water system in Churchill County, Nevada. It reports serving 26 people through 11 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
26
Service connections
11
Primary source
GU
Groundwater under influence of surface water
System type
TNCWS
Transient non-community water system
System record
How does Lahontan Dam State Park compare with other water systems in Churchill County?
By EPA's size categories, Lahontan Dam State Park is a very small system (500 people or fewer). Churchill County has 30 active public water systems. Its population served is well below the county average of 515 people per system, and accounts for 0.2% of the 15,452 people reported by systems filed under the county. Across Nevada, the 643 active systems average 5,508 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Lahontan Dam State Park is well below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Nevada has 258 active transient non-community water systems, 40% of the state's 643 active systems. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 1 Nevada systems (0.2%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Lahontan Dam State Park?
EPA lists Lahontan Dam State Park as owned by a state 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. 2 of the 30 active systems in Churchill County (6.7%) are also owned by a state government.
Does Lahontan Dam State Park have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 2018. The violations listed here began between October 1999 and October 2018. By type: 7 monitoring and reporting and 5 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 6 as resolved and 6 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2018-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2018-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2018-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2007-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2006-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2003-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2003-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2000-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1999-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
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.
Lahontan Dam State Park: frequently asked questions
Who runs Lahontan Dam State Park?
Lahontan Dam State Park (PWSID NV0002028) is a transient non-community water system owned by a state government. It is regulated by the NV state drinking water program.
How many people does Lahontan Dam State Park serve?
Lahontan Dam State Park reports serving 26 people through 11 service connections in Churchill County, Nevada.
Where does Lahontan Dam State Park get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Lahontan Dam State Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 2018. 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 Lahontan Dam State Park'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, 5 are health-based, and the most recent began in October 2018. For current results, consult EPA ECHO, or the NV state drinking water program.
Where can I find Lahontan Dam State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lahontan Dam State Park is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Churchill County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fallon City of | Churchill | 9,184 | Community | Groundwater |
| Fallon Naval Air Station | Churchill | 3,000 | Community | Groundwater |
| Sand Creek | Churchill | 953 | Community | Groundwater |
| Old River Water Company | Churchill | 300 | Community | Groundwater |
| Sonic Burger | Churchill | 265 | Transient non-community | Groundwater |
| Sage Valley MHP LLC | Churchill | 188 | 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, “Lahontan Dam State Park, PWSID NV0002028, Nevada”, https://aquacensus.com/water-systems/nevada/lahontan-dam-state-park-nv0002028 (data as of October 1, 2026).