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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 090400259

Shungopavi

Second Mesa, EPA Region 9 — Tribal Water Systems 86043 - drinking water served from groundwater sources to 1,756 people, tracked in EPA SDWIS and UCMR5.

1,756
People served
494
EPA violations
96
Health-based
Untested
UCMR5 result

The verdict

EPA records 494 drinking-water violations at Shungopavi, 19% of them health-based.

494
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
1,756
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Shungopavi

Shungopavi is a native american-owned community water system that delivers drinking water to 1,756 residents in Second Mesa, EPA Region 9 — Tribal Water Systems through 199 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 494 total violations for this system , of which 96 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 307 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Arsenic, recorded in 92 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.

EPA Region 9 — 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
1,756
Total Violations
494
Health-Based Violations
96
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
199
School/Daycare
No
MCL Violations
95
Monitoring Violations
307
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 92 2023
Coliform (TCR) MR 52 2014
Arsenic MR 19 2023
Public Notice Other 9 2016
Nitrate MR 7 2023
Chlorine MR 6 2023
Total Haloacetic Acids (HAA5) MR 5 2022
Revised Total Coliform Rule MON 5 2025
BHC-GAMMA MR 4 2011
Methoxychlor MR 4 2011
Toxaphene MR 4 2011
Carbofuran MR 4 2011
Atrazine MR 4 2011
LASSO MR 4 2011
Heptachlor MR 4 2011
Heptachlor epoxide MR 4 2011
2,4-D MR 4 2011
2,4,5-TP MR 4 2011
Benzo(a)pyrene MR 4 2017
Pentachlorophenol MR 4 2011
1,2,4-Trichlorobenzene MR 4 2011
cis-1,2-Dichloroethylene MR 4 2011
Total Polychlorinated Biphenyls (PCB) MR 4 2011
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2011
ETHYLENE DIBROMIDE MR 4 2011
Xylenes, Total MR 4 2011
Chlordane MR 4 2011
DICHLOROMETHANE MR 4 2011
o-Dichlorobenzene MR 4 2011
p-Dichlorobenzene MR 4 2011

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 Shungopavi.

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 090400259 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 9 — Tribal Water Systems Drinking Water Authority

EPA Region 9 — 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 09 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
2025 Revised Total Coliform Rule MON 5 SDWIS / 090400259 / 8000
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / 090400259 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / 090400259 / 5200
2023 Arsenic MCL 92 SDWIS / 090400259 / 1005
2023 Arsenic MR 19 SDWIS / 090400259 / 1005
2023 Nitrate MR 7 SDWIS / 090400259 / 1040
2023 Chlorine MR 6 SDWIS / 090400259 / 0999
2022 Total Haloacetic Acids (HAA5) MR 5 SDWIS / 090400259 / 2456
2022 TTHM MR 4 SDWIS / 090400259 / 2950
2021 Revised Total Coliform Rule RPT 1 SDWIS / 090400259 / 8000
2017 Benzo(a)pyrene MR 4 SDWIS / 090400259 / 2306
2017 Lead and Copper Rule MR 4 SDWIS / 090400259 / 5000
2016 Public Notice Other 9 SDWIS / 090400259 / 7500
2014 Coliform (TCR) MR 52 SDWIS / 090400259 / 3100
2011 BHC-GAMMA MR 4 SDWIS / 090400259 / 2010

How Shungopavi Compares

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

Metric Shungopavi EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 494 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 96 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,756 - 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 9 — 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 Shungopavi water safe to drink? ▼
Shungopavi (PWS ID: 090400259) has 494 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,756 people using Groundwater sources.
How many people does Shungopavi serve? ▼
Shungopavi serves 1,756 people in Second Mesa, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 199 service connections.
What type of violations does Shungopavi have? ▼
Shungopavi has 494 total violations: 96 health-based violations (MCL exceedances or treatment failures), 307 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Shungopavi water? ▼
No PFAS testing data is available for Shungopavi under the EPA's UCMR5 monitoring program.
What water source does Shungopavi use? ▼
Shungopavi 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. 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.