WOUNDED KNEE WATER SYSTEM
PWS ID: 084690478 · PINE RIDGE, 08 57770
WOUNDED KNEE WATER SYSTEM serves 255 people in PINE RIDGE, 08 using Surface Water water sources. It has 86 recorded EPA violations, including 17 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: WOUNDED KNEE WATER SYSTEM
WOUNDED KNEE WATER SYSTEM is a native american-owned community water system that delivers drinking water to 255 residents in PINE RIDGE, 08 through 51 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 86 total violations for this system , of which 17 (20%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 59 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 25 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. WOUNDED KNEE WATER SYSTEM's 86 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
- 51
- School/Daycare
- No
- MCL Violations
- 15
- Monitoring Violations
- 59
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 25 | 2005 |
| Coliform (TCR) | MCL | 15 | 2002 |
| Lead and Copper Rule | MR | 12 | 2022 |
| Consumer Confidence Rule | Other | 9 | 2010 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2025 |
| TTHM | MR | 4 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1982 |
| Nitrate | MR | 2 | 1994 |
| Groundwater Rule | TT | 1 | 2019 |
| Revised Total Coliform Rule | MON | 1 | 2019 |
| Asbestos | MR | 1 | 2020 |
| Mercury | MR | 1 | 1983 |
| Cadmium | MR | 1 | 1983 |
| Barium | MR | 1 | 1983 |
| Arsenic | MR | 1 | 1983 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Chromium | MR | 1 | 1983 |
| Fluoride | MR | 1 | 1983 |
| Selenium | MR | 1 | 1983 |
| Long Term 2 Enhanced Surface Water Treatment Rule | TT | 1 | 2022 |
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 WOUNDED KNEE 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 084690478 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 | Total Haloacetic Acids (HAA5) | MR | 4 | SDWIS / 084690478 / 2456 |
| 2025 | TTHM | MR | 4 | SDWIS / 084690478 / 2950 |
| 2022 | Lead and Copper Rule | MR | 12 | SDWIS / 084690478 / 5000 |
| 2022 | Long Term 2 Enhanced Surface Water Treatment Rule | TT | 1 | SDWIS / 084690478 / 0800 |
| 2020 | Asbestos | MR | 1 | SDWIS / 084690478 / 1094 |
| 2019 | Groundwater Rule | TT | 1 | SDWIS / 084690478 / 0700 |
| 2019 | Revised Total Coliform Rule | MON | 1 | SDWIS / 084690478 / 8000 |
| 2010 | Consumer Confidence Rule | Other | 9 | SDWIS / 084690478 / 7000 |
| 2005 | Coliform (TCR) | MR | 25 | SDWIS / 084690478 / 3100 |
| 2002 | Coliform (TCR) | MCL | 15 | SDWIS / 084690478 / 3100 |
| 1994 | Nitrate | MR | 2 | SDWIS / 084690478 / 1040 |
| 1983 | Mercury | MR | 1 | SDWIS / 084690478 / 1035 |
| 1983 | Cadmium | MR | 1 | SDWIS / 084690478 / 1015 |
| 1983 | Barium | MR | 1 | SDWIS / 084690478 / 1010 |
| 1983 | Arsenic | MR | 1 | SDWIS / 084690478 / 1005 |
How WOUNDED KNEE WATER SYSTEM Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | WOUNDED KNEE WATER SYSTEM | 08 avg | Federal benchmark |
|---|---|---|---|
| Total violations | 86 | 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 | 255 | 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.