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BLACKHAWK CENTER WATER SYSTEM

PWS ID: CA2000848 · COARSEGOLD, California 93614

BLACKHAWK CENTER WATER SYSTEM serves 143 people in COARSEGOLD, California using Groundwater water sources. It has 65 recorded EPA violations, including 15 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: BLACKHAWK CENTER WATER SYSTEM

BLACKHAWK CENTER WATER SYSTEM is a private-owned non-transient non-community water system that delivers drinking water to 143 residents in COARSEGOLD, California (Madera County) through 3 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 65 total violations for this system , of which 15 (23%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 44 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 16 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. BLACKHAWK CENTER WATER SYSTEM's 65 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
143
Total Violations
65
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
3
County
Madera
School/Daycare
Yes
MCL Violations
15
Monitoring Violations
44
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 16 2016
Coliform (TCR) MCL 15 2016
Lead and Copper Rule MR 4 2010
Consumer Confidence Rule Other 2 2011
Nitrate-Nitrite MR 2 2017
Nitrite MR 2 2015
Antimony, Total MR 2 2015
Arsenic MR 2 2015
Barium MR 2 2015
Cadmium MR 2 2015
Fluoride MR 2 2015
Mercury MR 2 2015
Selenium MR 2 2015
Beryllium, Total MR 2 2015
Thallium, Total MR 2 2015
Chromium 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 BLACKHAWK CENTER WATER SYSTEM.

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 CA2000848 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 BLACKHAWK CENTER WATER SYSTEM 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
2017 Nitrate-Nitrite MR 2 SDWIS / CA2000848 / 1038
2016 Coliform (TCR) MR 16 SDWIS / CA2000848 / 3100
2016 Coliform (TCR) MCL 15 SDWIS / CA2000848 / 3100
2015 Nitrite MR 2 SDWIS / CA2000848 / 1041
2015 Antimony, Total MR 2 SDWIS / CA2000848 / 1074
2015 Arsenic MR 2 SDWIS / CA2000848 / 1005
2015 Barium MR 2 SDWIS / CA2000848 / 1010
2015 Cadmium MR 2 SDWIS / CA2000848 / 1015
2015 Fluoride MR 2 SDWIS / CA2000848 / 1025
2015 Mercury MR 2 SDWIS / CA2000848 / 1035
2015 Selenium MR 2 SDWIS / CA2000848 / 1045
2015 Beryllium, Total MR 2 SDWIS / CA2000848 / 1075
2015 Thallium, Total MR 2 SDWIS / CA2000848 / 1085
2015 Chromium MR 2 SDWIS / CA2000848 / 1020
2011 Consumer Confidence Rule Other 2 SDWIS / CA2000848 / 7000

How BLACKHAWK CENTER WATER SYSTEM Compares

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

Metric BLACKHAWK CENTER WATER SYSTEM California avg Federal benchmark
Total violations 65 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 15 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 143 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 BLACKHAWK CENTER WATER SYSTEM water safe to drink? ▼
BLACKHAWK CENTER WATER SYSTEM (PWS ID: CA2000848) has 65 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 143 people using Groundwater sources.
How many people does BLACKHAWK CENTER WATER SYSTEM serve? ▼
BLACKHAWK CENTER WATER SYSTEM serves 143 people in COARSEGOLD, California. It is a Private-owned system using Groundwater water sources with 3 service connections.
What type of violations does BLACKHAWK CENTER WATER SYSTEM have? ▼
BLACKHAWK CENTER WATER SYSTEM has 65 total violations: 15 health-based violations (MCL exceedances or treatment failures), 44 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in BLACKHAWK CENTER WATER SYSTEM water? ▼
No PFAS testing data is available for BLACKHAWK CENTER WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does BLACKHAWK CENTER WATER SYSTEM use? ▼
BLACKHAWK CENTER WATER SYSTEM uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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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