Public water system · NV0000043
ActiveCrescent Valley Water System
At a glance
Crescent Valley Water System (PWSID NV0000043) is an active community water system in Eureka County, Nevada. It reports serving 340 people through 209 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, one is health-based, and the most recent began in January 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
340
Service connections
209
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Crescent Valley Water System compare with other water systems in Eureka County?
By EPA's size categories, Crescent Valley Water System is a very small system (500 people or fewer). Eureka County has 13 active public water systems, and Crescent Valley Water System is the 5th-largest of them by population served. Its population served is roughly in line with the county average of 330 people per system, and accounts for 7.9% of the 4,294 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 Crescent Valley Water System 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 Crescent Valley Water System?
EPA lists Crescent Valley Water System 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. 4 of the 13 active systems in Eureka County (31%) are also owned by a local government.
Does Crescent Valley Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2016. The violations listed here began between November 2005 and January 2016. By type: 11 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 9 as resolved and 3 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 |
|---|---|---|---|---|
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2008-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2006-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2005-11-01 | 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.
Crescent Valley Water System: frequently asked questions
Who runs Crescent Valley Water System?
Crescent Valley Water System (PWSID NV0000043) is a community water system owned by a local government. It is regulated by the NV state drinking water program.
How many people does Crescent Valley Water System serve?
Crescent Valley Water System reports serving 340 people through 209 service connections in Eureka County, Nevada.
Where does Crescent Valley Water System 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 Crescent Valley Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2016. 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 Crescent Valley Water System'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, one is health-based, and the most recent began in January 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the NV state drinking water program.
Where can I find Crescent Valley Water System's water quality report?
As a community water system, Crescent Valley Water System 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 Eureka County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nevada Gold Mines Carlin Goldstrike Fcty | Eureka | 1,170 | Non-transient non-community | Groundwater |
| Nevada Gold Mines Gold Quarry | Eureka | 700 | Non-transient non-community | Groundwater |
| Nevada Gold Mines Carlin Leeville | Eureka | 550 | Non-transient non-community | Groundwater |
| Eureka Water Association | Eureka | 450 | Community | Groundwater |
| The Lodge at Pine Valley | Eureka | 320 | Non-transient non-community | Groundwater |
| Nevada Gold Mines Carlin North Area Lch | Eureka | 300 | Non-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, “Crescent Valley Water System, PWSID NV0000043, Nevada”, https://aquacensus.com/water-systems/nevada/crescent-valley-water-system-nv0000043 (data as of October 1, 2026).