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MD 46 AHWAHNEE RESORTS

PWS ID: CA2000293 · MADERA, California 93637

MD 46 AHWAHNEE RESORTS serves 300 people in MADERA, California using Groundwater water sources. It has 158 recorded EPA violations, including 92 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MD 46 AHWAHNEE RESORTS

MD 46 AHWAHNEE RESORTS is a local-owned community water system that delivers drinking water to 300 residents in MADERA, California (Madera County) through 90 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 158 total violations for this system , of which 92 (58%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 62 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 Arsenic, recorded in 53 violations (MCL, health-based). 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. MD 46 AHWAHNEE RESORTS's 158 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
300
Total Violations
158
Health-Based Violations
92
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
90
County
Madera
School/Daycare
No
MCL Violations
92
Monitoring Violations
62
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 53 2017
Combined Uranium MCL 39 2013
Arsenic MR 13 2017
Combined Uranium MR 3 2013
Coliform (TCR) MR 3 2013
cis-1,2-Dichloroethylene MR 2 2016
Xylenes, Total MR 2 2016
DICHLOROMETHANE MR 2 2016
o-Dichlorobenzene MR 2 2016
Vinyl chloride MR 2 2016
1,1-Dichloroethylene MR 2 2016
1,2-Dichloroethane MR 2 2016
1,1,1-Trichloroethane MR 2 2016
Trichloroethylene MR 2 2016
1,1,2-Trichloroethane MR 2 2016
Toluene MR 2 2016
Ethylbenzene MR 2 2016
Styrene MR 2 2016
trans-1,2-Dichloroethylene MR 2 2016
1,2,4-Trichlorobenzene MR 2 2016
CHLOROBENZENE MR 2 2016
Tetrachloroethylene MR 2 2016
p-Dichlorobenzene MR 2 2016
Benzene MR 2 2016
Carbon tetrachloride MR 2 2016
1,2-Dichloropropane MR 2 2016
Lead and Copper Rule MR 1 2005

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 MD 46 AHWAHNEE RESORTS.

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 CA2000293 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 MD 46 AHWAHNEE RESORTS 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 Arsenic MCL 53 SDWIS / CA2000293 / 1005
2017 Arsenic MR 13 SDWIS / CA2000293 / 1005
2016 cis-1,2-Dichloroethylene MR 2 SDWIS / CA2000293 / 2380
2016 Xylenes, Total MR 2 SDWIS / CA2000293 / 2955
2016 DICHLOROMETHANE MR 2 SDWIS / CA2000293 / 2964
2016 o-Dichlorobenzene MR 2 SDWIS / CA2000293 / 2968
2016 Vinyl chloride MR 2 SDWIS / CA2000293 / 2976
2016 1,1-Dichloroethylene MR 2 SDWIS / CA2000293 / 2977
2016 1,2-Dichloroethane MR 2 SDWIS / CA2000293 / 2980
2016 1,1,1-Trichloroethane MR 2 SDWIS / CA2000293 / 2981
2016 Trichloroethylene MR 2 SDWIS / CA2000293 / 2984
2016 1,1,2-Trichloroethane MR 2 SDWIS / CA2000293 / 2985
2016 Toluene MR 2 SDWIS / CA2000293 / 2991
2016 Ethylbenzene MR 2 SDWIS / CA2000293 / 2992
2016 Styrene MR 2 SDWIS / CA2000293 / 2996

How MD 46 AHWAHNEE RESORTS Compares

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

Metric MD 46 AHWAHNEE RESORTS California avg Federal benchmark
Total violations 158 21.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 92 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 300 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 MD 46 AHWAHNEE RESORTS water safe to drink? ▼
MD 46 AHWAHNEE RESORTS (PWS ID: CA2000293) has 158 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 300 people using Groundwater sources.
How many people does MD 46 AHWAHNEE RESORTS serve? ▼
MD 46 AHWAHNEE RESORTS serves 300 people in MADERA, California. It is a Local-owned system using Groundwater water sources with 90 service connections.
What type of violations does MD 46 AHWAHNEE RESORTS have? ▼
MD 46 AHWAHNEE RESORTS has 158 total violations: 92 health-based violations (MCL exceedances or treatment failures), 62 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MD 46 AHWAHNEE RESORTS water? ▼
No PFAS testing data is available for MD 46 AHWAHNEE RESORTS under the EPA's UCMR5 monitoring program.
What water source does MD 46 AHWAHNEE RESORTS use? ▼
MD 46 AHWAHNEE RESORTS 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.

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