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NPS PRNS - BEACHES

PWS ID: CA2110502 · POINT REYES STATION, California 94956

NPS PRNS - BEACHES serves 1,560 people in POINT REYES STATION, California using Groundwater water sources. It has 76 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: NPS PRNS - BEACHES

NPS PRNS - BEACHES is a federal-owned community water system that delivers drinking water to 1,560 residents in POINT REYES STATION, California (Marin County) through 7 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 76 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 74 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Nitrate, recorded in 4 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across California, EPA tracks 7,249 public water systems serving 42,404,883 people, with 153,308 cumulative violations and 63,983 health-based violations on record. About 89% of systems in the state carry at least one violation, and state-wide the average per system is 21.1 violations. NPS PRNS - BEACHES's 76 violations sit above the California average. Statewide, 447 of 694 UCMR5-tested systems have reported PFAS detections (64.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,560
Total Violations
76
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Federal
Connections
7
County
Marin
School/Daycare
No
MCL Violations
0
Monitoring Violations
74
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 4 2019
Antimony, Total MR 2 2015
Arsenic MR 2 2015
Barium MR 2 2015
Fluoride MR 2 2015
Mercury MR 2 2015
Nickel MR 2 2015
1,2,4-Trichlorobenzene MR 2 2012
cis-1,2-Dichloroethylene MR 2 2012
Xylenes, Total MR 2 2012
DICHLOROMETHANE MR 2 2012
p-Dichlorobenzene MR 2 2012
1,1-Dichloroethylene MR 2 2012
trans-1,2-Dichloroethylene MR 2 2012
1,2-Dichloroethane MR 2 2012
1,1,1-Trichloroethane MR 2 2012
Carbon tetrachloride MR 2 2012
1,2-Dichloropropane MR 2 2012
Tetrachloroethylene MR 2 2012
CHLOROBENZENE MR 2 2012
Toluene MR 2 2012
Ethylbenzene MR 2 2012
Atrazine MR 2 2015
Simazine MR 2 2015
o-Dichlorobenzene MR 2 2012
Trichloroethylene MR 2 2012
Chromium MR 2 2015
Styrene MR 2 2012
Coliform (TCR) MR 2 2004
Beryllium, Total MR 2 2015

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for NPS PRNS - BEACHES.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CA2110502 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

California Drinking Water Authority

California State Water Resources Control Board — Division of Drinking Water is the primacy agency that licenses and inspects NPS PRNS - BEACHES under EPA-delegated authority.

Open CA regulator portal

Source: California State Water Resources Control Board — Division of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2019 Nitrate MR 4 SDWIS / CA2110502 / 1040
2015 Antimony, Total MR 2 SDWIS / CA2110502 / 1074
2015 Arsenic MR 2 SDWIS / CA2110502 / 1005
2015 Barium MR 2 SDWIS / CA2110502 / 1010
2015 Fluoride MR 2 SDWIS / CA2110502 / 1025
2015 Mercury MR 2 SDWIS / CA2110502 / 1035
2015 Nickel MR 2 SDWIS / CA2110502 / 1036
2015 Atrazine MR 2 SDWIS / CA2110502 / 2050
2015 Simazine MR 2 SDWIS / CA2110502 / 2037
2015 Chromium MR 2 SDWIS / CA2110502 / 1020
2015 Beryllium, Total MR 2 SDWIS / CA2110502 / 1075
2015 Cadmium MR 2 SDWIS / CA2110502 / 1015
2015 Thallium, Total MR 2 SDWIS / CA2110502 / 1085
2015 Selenium MR 2 SDWIS / CA2110502 / 1045
2012 1,2,4-Trichlorobenzene MR 2 SDWIS / CA2110502 / 2378

How NPS PRNS - BEACHES Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric NPS PRNS - BEACHES California avg Federal benchmark
Total violations 76 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 8.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 64.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,560 5,850 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,249 regulated public water systems in California.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is NPS PRNS - BEACHES water safe to drink? ▼
NPS PRNS - BEACHES (PWS ID: CA2110502) has 76 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,560 people using Groundwater sources.
How many people does NPS PRNS - BEACHES serve? ▼
NPS PRNS - BEACHES serves 1,560 people in POINT REYES STATION, California. It is a Federal-owned system using Groundwater water sources with 7 service connections.
What type of violations does NPS PRNS - BEACHES have? ▼
NPS PRNS - BEACHES has 76 total violations: 0 health-based violations (MCL exceedances or treatment failures), 74 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in NPS PRNS - BEACHES water? ▼
No PFAS testing data is available for NPS PRNS - BEACHES under the EPA's UCMR5 monitoring program.
What water source does NPS PRNS - BEACHES use? ▼
NPS PRNS - BEACHES uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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