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States → EPA Region 9 — Tribal Water Systems

Non-Transient Non-Community Water System · PWS 090400260

Hopi Cultural Center

Kykotsmovi, EPA Region 9 — Tribal Water Systems 86039 - drinking water served from groundwater sources to 450 people, tracked in EPA SDWIS and UCMR5.

450
People served
554
EPA violations
65
Health-based
Untested
UCMR5 result

The verdict

EPA records 554 drinking-water violations at Hopi Cultural Center, 12% of them health-based.

554
Total EPA violations on record
12%
Health-based (MCL / treatment failure)
450
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hopi Cultural Center

Hopi Cultural Center is a native american-owned non-transient non-community water system that delivers drinking water to 450 residents in Kykotsmovi, EPA Region 9 — Tribal Water Systems through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 554 total violations for this system , of which 65 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 466 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

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.

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
450
Total Violations
554
Health-Based Violations
65
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Native American
Connections
2
School/Daycare
No
MCL Violations
53
Monitoring Violations
466
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 53 2021
Tetrachloroethylene MR 12 2020
Arsenic MR 11 2016
Groundwater Rule TT 11 2023
Coliform (TCR) MR 10 2014
Nitrate MR 9 2021
Barium MR 7 2014
Cadmium MR 7 2014
Chromium MR 7 2014
CYANIDE MR 7 2014
Fluoride MR 7 2014
Mercury MR 7 2014
Selenium MR 7 2014
Antimony, Total MR 7 2014
Beryllium, Total MR 7 2014
Thallium, Total MR 7 2014
Endrin MR 7 2014
BHC-GAMMA MR 7 2014
Methoxychlor MR 7 2014
Toxaphene MR 7 2014
Dalapon MR 7 2014
Diquat MR 7 2014
Endothall MR 7 2014
Glyphosate MR 7 2014
Di(2-ethylhexyl) adipate MR 7 2014
OXAMYL MR 7 2014
Simazine MR 7 2014
Di(2-ethylhexyl) phthalate MR 7 2014
Picloram MR 7 2014
Dinoseb MR 7 2014

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 Hopi Cultural Center.

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 090400260 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
2024 Lead and Copper Rule MR 3 SDWIS / 090400260 / 5000
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / 090400260 / 5200
2023 Groundwater Rule TT 11 SDWIS / 090400260 / 0700
2023 Revised Total Coliform Rule RPT 1 SDWIS / 090400260 / 8000
2021 Arsenic MCL 53 SDWIS / 090400260 / 1005
2021 Nitrate MR 9 SDWIS / 090400260 / 1040
2020 Tetrachloroethylene MR 12 SDWIS / 090400260 / 2987
2016 Arsenic MR 11 SDWIS / 090400260 / 1005
2016 Public Notice Other 3 SDWIS / 090400260 / 7500
2014 Coliform (TCR) MR 10 SDWIS / 090400260 / 3100
2014 Barium MR 7 SDWIS / 090400260 / 1010
2014 Cadmium MR 7 SDWIS / 090400260 / 1015
2014 Chromium MR 7 SDWIS / 090400260 / 1020
2014 CYANIDE MR 7 SDWIS / 090400260 / 1024
2014 Fluoride MR 7 SDWIS / 090400260 / 1025

How Hopi Cultural Center Compares

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

Metric Hopi Cultural Center EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 554 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 65 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 450 - 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 Hopi Cultural Center water safe to drink? ▼
Hopi Cultural Center (PWS ID: 090400260) has 554 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 450 people using Groundwater sources.
How many people does Hopi Cultural Center serve? ▼
Hopi Cultural Center serves 450 people in Kykotsmovi, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 2 service connections.
What type of violations does Hopi Cultural Center have? ▼
Hopi Cultural Center has 554 total violations: 65 health-based violations (MCL exceedances or treatment failures), 466 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hopi Cultural Center water? ▼
No PFAS testing data is available for Hopi Cultural Center under the EPA's UCMR5 monitoring program.
What water source does Hopi Cultural Center use? ▼
Hopi Cultural Center 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.
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.