WYOLA WATER SYSTEM
PWS ID: 083090014 · CROW AGENCY, 08 59022
WYOLA WATER SYSTEM serves 261 people in CROW AGENCY, 08 using Groundwater water sources. It has 292 recorded EPA violations, including 17 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: WYOLA WATER SYSTEM
WYOLA WATER SYSTEM is a native american-owned community water system that delivers drinking water to 261 residents in CROW AGENCY, 08 through 58 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 292 total violations for this system , of which 17 (6%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 262 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 Coliform (TCR), recorded in 78 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across 08, EPA tracks 160 public water systems serving 144,980 people, with 13,068 cumulative violations and 1,547 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 81.7 violations. WYOLA WATER SYSTEM's 292 violations sit above the 08 average. Statewide, 10 of 13 UCMR5-tested systems have reported PFAS detections (76.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 58
- School/Daycare
- Yes
- MCL Violations
- 14
- Monitoring Violations
- 262
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 78 | 2006 |
| Revised Total Coliform Rule | MON | 30 | 2020 |
| Coliform (TCR) | MCL | 11 | 2007 |
| Lead and Copper Rule | MR | 10 | 2025 |
| Nitrate-Nitrite | MR | 8 | 2023 |
| Consumer Confidence Rule | Other | 8 | 2023 |
| Chlorine | MR | 6 | 2023 |
| Nitrite | MR | 4 | 2020 |
| Groundwater Rule | TT | 3 | 2020 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2024 |
| cis-1,2-Dichloroethylene | MR | 3 | 2024 |
| DICHLOROMETHANE | MR | 3 | 2024 |
| p-Dichlorobenzene | MR | 3 | 2024 |
| 1,2-Dichloroethane | MR | 3 | 2024 |
| Carbon tetrachloride | MR | 3 | 2024 |
| Trichloroethylene | MR | 3 | 2024 |
| 1,1,2-Trichloroethane | MR | 3 | 2024 |
| Tetrachloroethylene | MR | 3 | 2024 |
| Ethylbenzene | MR | 3 | 2024 |
| Xylenes, Total | MR | 3 | 2024 |
| o-Dichlorobenzene | MR | 3 | 2024 |
| Vinyl chloride | MR | 3 | 2024 |
| 1,1-Dichloroethylene | MR | 3 | 2024 |
| trans-1,2-Dichloroethylene | MR | 3 | 2024 |
| 1,1,1-Trichloroethane | MR | 3 | 2024 |
| CHLOROBENZENE | MR | 3 | 2024 |
| Styrene | MR | 3 | 2024 |
| Benzene | MR | 3 | 2024 |
| Toluene | MR | 3 | 2024 |
| Revised Total Coliform Rule | MCL | 3 | 2019 |
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 WYOLA WATER SYSTEM.
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 083090014 on SDWISSource: EPA SDWIS Federal Reports Search
08 Drinking Water Authority
08'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 08 regulator via EPA SDWISViolation 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 | Lead and Copper Rule | MR | 10 | SDWIS / 083090014 / 5000 |
| 2024 | 1,2,4-Trichlorobenzene | MR | 3 | SDWIS / 083090014 / 2378 |
| 2024 | cis-1,2-Dichloroethylene | MR | 3 | SDWIS / 083090014 / 2380 |
| 2024 | DICHLOROMETHANE | MR | 3 | SDWIS / 083090014 / 2964 |
| 2024 | p-Dichlorobenzene | MR | 3 | SDWIS / 083090014 / 2969 |
| 2024 | 1,2-Dichloroethane | MR | 3 | SDWIS / 083090014 / 2980 |
| 2024 | Carbon tetrachloride | MR | 3 | SDWIS / 083090014 / 2982 |
| 2024 | Trichloroethylene | MR | 3 | SDWIS / 083090014 / 2984 |
| 2024 | 1,1,2-Trichloroethane | MR | 3 | SDWIS / 083090014 / 2985 |
| 2024 | Tetrachloroethylene | MR | 3 | SDWIS / 083090014 / 2987 |
| 2024 | Ethylbenzene | MR | 3 | SDWIS / 083090014 / 2992 |
| 2024 | Xylenes, Total | MR | 3 | SDWIS / 083090014 / 2955 |
| 2024 | o-Dichlorobenzene | MR | 3 | SDWIS / 083090014 / 2968 |
| 2024 | Vinyl chloride | MR | 3 | SDWIS / 083090014 / 2976 |
| 2024 | 1,1-Dichloroethylene | MR | 3 | SDWIS / 083090014 / 2977 |
How WYOLA WATER SYSTEM Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | WYOLA WATER SYSTEM | 08 avg | Federal benchmark |
|---|---|---|---|
| Total violations | 292 | 81.7 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 17 | 9.7 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 76.9% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 261 | 906 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 160 regulated public water systems in 08.
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 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for 08
Read our methodology — how this data is sourced, computed, and verified.