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States → EPA Region 6 — Tribal Water Systems

Community Water System · PWS 063503115

San Felipe Black Mesa Casino

San Felipe Pueblo, EPA Region 6 — Tribal Water Systems 87001 - drinking water served from groundwater sources to 3,789 people, tracked in EPA SDWIS and UCMR5.

3,789
People served
38
EPA violations
4
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 38 drinking-water violations at San Felipe Black Mesa Casino, 11% of them health-based.

38
Total EPA violations on record
11%
Health-based (MCL / treatment failure)
3,789
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: San Felipe Black Mesa Casino

San Felipe Black Mesa Casino is a native american-owned community water system that delivers drinking water to 3,789 residents in San Felipe Pueblo, EPA Region 6 — Tribal Water Systems through 46 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 38 total violations for this system , of which 4 (11%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 30 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 22 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

EPA Region 6 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
3,789
Total Violations
38
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
46
School/Daycare
No
MCL Violations
1
Monitoring Violations
30
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 22 2007
Consumer Confidence Rule Other 4 2009
Groundwater Rule TT 3 2016
Lead and Copper Rule MR 3 2019
Nitrate-Nitrite MR 3 2014
Revised Total Coliform Rule MON 2 2020
Coliform (TCR) MCL 1 1998

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 174 samples detected PFAS.

Contaminant Date Result MRL Status
PFOA 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 7/11/2023 <8.00 ppt 8.00 ppt Not Detected
PFDoA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 7/11/2023 <6.00 ppt 6.00 ppt Not Detected
4:2 FTS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/11/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/11/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 7/11/2023 <2.00 ppt 2.00 ppt Not Detected
PFTrDA 7/11/2023 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 7/11/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/11/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/11/2023 <8.00 ppt 8.00 ppt Not Detected
PFPeA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/11/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFMPA 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/11/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 7/11/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 7/11/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/11/2023 <6.00 ppt 6.00 ppt Not Detected
PFHpA 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 7/11/2023 <3.00 ppt 3.00 ppt Not Detected

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 San Felipe Black Mesa Casino.

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 063503115 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 6 — Tribal Water Systems Drinking Water Authority

EPA Region 6 — Tribal Water Systems's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 06 regulator via EPA SDWIS

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
2020 Revised Total Coliform Rule MON 2 SDWIS / 063503115 / 8000
2019 Lead and Copper Rule MR 3 SDWIS / 063503115 / 5000
2016 Groundwater Rule TT 3 SDWIS / 063503115 / 0700
2014 Nitrate-Nitrite MR 3 SDWIS / 063503115 / 1038
2009 Consumer Confidence Rule Other 4 SDWIS / 063503115 / 7000
2007 Coliform (TCR) MR 22 SDWIS / 063503115 / 3100
1998 Coliform (TCR) MCL 1 SDWIS / 063503115 / 3100

How San Felipe Black Mesa Casino Compares

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

Metric San Felipe Black Mesa Casino EPA Region 6 — Tribal Water Systems avg Federal benchmark
Total violations 38 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,789 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 6 — Tribal Water Systems.

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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is San Felipe Black Mesa Casino water safe to drink? ▼
San Felipe Black Mesa Casino (PWS ID: 063503115) has 38 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,789 people using Groundwater sources.
How many people does San Felipe Black Mesa Casino serve? ▼
San Felipe Black Mesa Casino serves 3,789 people in San Felipe Pueblo, EPA Region 6 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 46 service connections.
What type of violations does San Felipe Black Mesa Casino have? ▼
San Felipe Black Mesa Casino has 38 total violations: 4 health-based violations (MCL exceedances or treatment failures), 30 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in San Felipe Black Mesa Casino water? ▼
No. San Felipe Black Mesa Casino was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does San Felipe Black Mesa Casino use? ▼
San Felipe Black Mesa Casino 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.