Public water system · CA1410503
ActiveNps - Death Valley, Cow Creek/Nevares
At a glance
Nps - Death Valley, Cow Creek/Nevares (PWSID CA1410503) is an active community water system in Inyo County, California. It reports serving 88 people through 61 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
88
Service connections
61
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Nps - Death Valley, Cow Creek/Nevares compare with other water systems in Inyo County?
By EPA's size categories, Nps - Death Valley, Cow Creek/Nevares is a very small system (500 people or fewer). Inyo County has 112 active public water systems. Its population served is well below the county average of 442 people per system, and accounts for 0.2% of the 49,451 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 Nps - Death Valley, Cow Creek/Nevares 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. 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 Nps - Death Valley, Cow Creek/Nevares?
EPA lists Nps - Death Valley, Cow Creek/Nevares as owned by the federal 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. 20 of the 112 active systems in Inyo County (18%) are also owned by the federal government.
Does Nps - Death Valley, Cow Creek/Nevares have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2025. The violations listed here began between June 2015 and January 2025. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 2 as archived and 2 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2022-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
All 4 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.
Nps - Death Valley, Cow Creek/Nevares: frequently asked questions
Who runs Nps - Death Valley, Cow Creek/Nevares?
Nps - Death Valley, Cow Creek/Nevares (PWSID CA1410503) is a community water system owned by the federal government. It is regulated by the CA state drinking water program.
How many people does Nps - Death Valley, Cow Creek/Nevares serve?
Nps - Death Valley, Cow Creek/Nevares reports serving 88 people through 61 service connections in Inyo County, California.
Where does Nps - Death Valley, Cow Creek/Nevares 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 Nps - Death Valley, Cow Creek/Nevares have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2025. 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 Nps - Death Valley, Cow Creek/Nevares' 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 4 violations for this system; none is health-based, and the most recent began in January 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Nps - Death Valley, Cow Creek/Nevares' water quality report?
As a community water system, Nps - Death Valley, Cow Creek/Nevares 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 Inyo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bishop Creek Chevron | Inyo | 16,793 | Transient non-community | Groundwater |
| Bishop, City of | Inyo | 3,819 | Community | Groundwater |
| Petite Pantry | Inyo | 3,012 | Transient non-community | Groundwater |
| Lee'S Frontier | Inyo | 2,000 | Transient non-community | Groundwater |
| Inyo County PWD - Lone Pine | Inyo | 1,835 | Community | Purchased groundwater |
| Pearsonville Water System | Inyo | 1,515 | 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, “Nps - Death Valley, Cow Creek/Nevares, PWSID CA1410503, California”, https://aquacensus.com/water-systems/california/nps-death-valley-cow-creek-nevares-ca1410503 (data as of October 1, 2026).