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Community Water System · PWS 064026001

Pawnee Tribal Complex

Pawnee, EPA Region 6 — Tribal Water Systems 74058 - drinking water served from groundwater sources to 485 people, tracked in EPA SDWIS and UCMR5.

485
People served
132
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 132 drinking-water violations at Pawnee Tribal Complex, 14% of them health-based.

132
Total EPA violations on record
14%
Health-based (MCL / treatment failure)
485
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Pawnee Tribal Complex

Pawnee Tribal Complex is a native american-owned community water system that delivers drinking water to 485 residents in Pawnee, EPA Region 6 — Tribal Water Systems through 35 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 132 total violations for this system , of which 18 (14%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 108 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 52 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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
485
Total Violations
132
Health-Based Violations
18
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
35
School/Daycare
No
MCL Violations
10
Monitoring Violations
108
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 52 2013
Gross Alpha, Excl. Radon and U MR 14 2013
Combined Radium (-226 and -228) MR 14 2013
Combined Uranium MR 14 2013
Coliform (TCR) MCL 10 2014
Nitrate-Nitrite MR 8 2015
Groundwater Rule TT 6 2011
Consumer Confidence Rule Other 5 2016
Lead and Copper Rule MR 3 2010
Lead and Copper Rule TT 2 2002
Revised Total Coliform Rule MON 1 2020
Total Haloacetic Acids (HAA5) MR 1 2008
TTHM MR 1 2008

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 Pawnee Tribal Complex.

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 064026001 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 1 SDWIS / 064026001 / 8000
2016 Consumer Confidence Rule Other 5 SDWIS / 064026001 / 7000
2015 Nitrate-Nitrite MR 8 SDWIS / 064026001 / 1038
2014 Coliform (TCR) MCL 10 SDWIS / 064026001 / 3100
2013 Coliform (TCR) MR 52 SDWIS / 064026001 / 3100
2013 Gross Alpha, Excl. Radon and U MR 14 SDWIS / 064026001 / 4000
2013 Combined Radium (-226 and -228) MR 14 SDWIS / 064026001 / 4010
2013 Combined Uranium MR 14 SDWIS / 064026001 / 4006
2011 Groundwater Rule TT 6 SDWIS / 064026001 / 0700
2010 Lead and Copper Rule MR 3 SDWIS / 064026001 / 5000
2008 Total Haloacetic Acids (HAA5) MR 1 SDWIS / 064026001 / 2456
2008 TTHM MR 1 SDWIS / 064026001 / 2950
2002 Lead and Copper Rule TT 2 SDWIS / 064026001 / 5000

How Pawnee Tribal Complex Compares

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

Metric Pawnee Tribal Complex EPA Region 6 — Tribal Water Systems avg Federal benchmark
Total violations 132 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 485 - 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 Pawnee Tribal Complex water safe to drink? ▼
Pawnee Tribal Complex (PWS ID: 064026001) has 132 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 485 people using Groundwater sources.
How many people does Pawnee Tribal Complex serve? ▼
Pawnee Tribal Complex serves 485 people in Pawnee, EPA Region 6 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 35 service connections.
What type of violations does Pawnee Tribal Complex have? ▼
Pawnee Tribal Complex has 132 total violations: 18 health-based violations (MCL exceedances or treatment failures), 108 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Pawnee Tribal Complex water? ▼
No PFAS testing data is available for Pawnee Tribal Complex under the EPA's UCMR5 monitoring program.
What water source does Pawnee Tribal Complex use? ▼
Pawnee Tribal Complex 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.