States ›Montana ›Big Horn County ›Pryor

Pryor, MT Tap Water Quality 2026

Water quality report for Pryor, MT — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Pryor's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Pryor Water System PWSID: 083090012 Updated: 2026 Q2
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1 violation currently open

Lead was not detected. PFAS has never been sampled at this system.

D

Pryor earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected
PFAS never sampled at this system
173 violations since 2015, 3 health-based
1 violation currently open
Pryor's lead level vs. all Montana community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Montana utilities
Population Served
326
~98 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 173 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Revised Total Coliform Rule MONITORING FAILURE — — 2026 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2025 Archived
Nitrate-Nitrite MONITORING AND REPORTING — — 2025 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
E. COLI MONITORING AND REPORTING — 0 2023 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022–2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022–2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2020 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2020–2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2020–2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2020–2022 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2020–2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2020–2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2020–2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2020–2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2020–2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2020–2022 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2020–2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2020–2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2020–2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Mercury MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Mercury MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2020–2022 Resolved
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2020–2022 Resolved
Selenium MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Selenium MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2020–2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020–2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020–2022 Resolved
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2020–2022 Resolved
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2020–2022 Resolved
CYANIDE MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
CYANIDE MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2020–2022 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2020–2022 Resolved
Barium MONITORING AND REPORTING — 2 mg/L 2020–2022 Resolved
Barium MONITORING AND REPORTING — 2 mg/L 2020–2022 Resolved
Nickel MONITORING AND REPORTING — — 2020–2022 Resolved
Nickel MONITORING AND REPORTING — — 2020–2022 Resolved
Chromium MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Chromium MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2020–2022 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2020–2022 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2020–2022 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2020–2022 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2020–2022 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2020–2022 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2020–2022 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2020–2022 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2020–2022 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2020–2022 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2020–2022 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2020–2022 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2020–2022 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2020–2022 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2020–2022 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2020–2022 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2020–2022 Resolved
LASSO MONITORING AND REPORTING — — 2020–2022 Resolved
LASSO MONITORING AND REPORTING — — 2020–2022 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2020–2022 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2020–2022 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2020–2022 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2020–2022 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2020–2022 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2020–2022 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2020–2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2020–2022 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2020–2022 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2020–2025 Archived
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2020–2025 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2020–2025 Archived
Radium-226 MONITORING AND REPORTING — — 2020–2025 Archived
Radium-228 MONITORING AND REPORTING — — 2020–2025 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2020–2025 Archived
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2020–2025 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2020–2025 Archived
Radium-226 MONITORING AND REPORTING — — 2020–2025 Archived
Radium-228 MONITORING AND REPORTING — — 2020–2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2018 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018–2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018–2020 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2017 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 173 recorded since 2015 (3 health-based).

About the Main Water System

Utility Pryor Water System
PWSID 083090012
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 326
Service connections 98
Systems serving this area 1
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Pryor tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open.
Does Pryor water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Pryor? ▼
Pryor Water System (PWSID 083090012). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-09-24. Inspectors recorded 2 significant deficiencies.

What Should Pryor Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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