UPPER SIOUX COMMUNITY
PWS ID: 055294902 · GRANITE FALLS, 05 56241
UPPER SIOUX COMMUNITY serves 1,900 people in GRANITE FALLS, 05 using Groundwater water sources. It has 184 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: UPPER SIOUX COMMUNITY
UPPER SIOUX COMMUNITY is a native american-owned community water system that delivers drinking water to 1,900 residents in GRANITE FALLS, 05 through 67 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 184 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 184 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 Lead and Copper Rule, recorded in 8 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 05, EPA tracks 113 public water systems serving 144,290 people, with 19,546 cumulative violations and 443 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 173 violations. UPPER SIOUX COMMUNITY's 184 violations sit above the 05 average. Statewide, 5 of 13 UCMR5-tested systems have reported PFAS detections (38.5%). 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
- 67
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 184
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 8 | 2024 |
| Antimony, Total | MR | 6 | 2024 |
| Arsenic | MR | 6 | 2024 |
| Barium | MR | 6 | 2024 |
| CYANIDE | MR | 6 | 2024 |
| Fluoride | MR | 6 | 2024 |
| Beryllium, Total | MR | 6 | 2024 |
| Thallium, Total | MR | 6 | 2024 |
| Selenium | MR | 6 | 2024 |
| Mercury | MR | 6 | 2024 |
| Nickel | MR | 6 | 2024 |
| Cadmium | MR | 6 | 2024 |
| Chromium | MR | 6 | 2024 |
| Asbestos | MR | 5 | 2024 |
| Endrin | MR | 3 | 2020 |
| BHC-GAMMA | MR | 3 | 2020 |
| Toxaphene | MR | 3 | 2020 |
| Diquat | MR | 3 | 2020 |
| Endothall | MR | 3 | 2020 |
| Glyphosate | MR | 3 | 2020 |
| OXAMYL | MR | 3 | 2020 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2020 |
| Aldicarb sulfone | MR | 3 | 2020 |
| Carbofuran | MR | 3 | 2020 |
| Aldicarb | MR | 3 | 2020 |
| LASSO | MR | 3 | 2020 |
| Heptachlor | MR | 3 | 2020 |
| Heptachlor epoxide | MR | 3 | 2020 |
| Benzo(a)pyrene | MR | 3 | 2020 |
| Pentachlorophenol | MR | 3 | 2020 |
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 UPPER SIOUX COMMUNITY.
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 055294902 on SDWISSource: EPA SDWIS Federal Reports Search
05 Drinking Water Authority
05'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 05 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 |
|---|---|---|---|---|
| 2024 | Lead and Copper Rule | MR | 8 | SDWIS / 055294902 / 5000 |
| 2024 | Antimony, Total | MR | 6 | SDWIS / 055294902 / 1074 |
| 2024 | Arsenic | MR | 6 | SDWIS / 055294902 / 1005 |
| 2024 | Barium | MR | 6 | SDWIS / 055294902 / 1010 |
| 2024 | CYANIDE | MR | 6 | SDWIS / 055294902 / 1024 |
| 2024 | Fluoride | MR | 6 | SDWIS / 055294902 / 1025 |
| 2024 | Beryllium, Total | MR | 6 | SDWIS / 055294902 / 1075 |
| 2024 | Thallium, Total | MR | 6 | SDWIS / 055294902 / 1085 |
| 2024 | Selenium | MR | 6 | SDWIS / 055294902 / 1045 |
| 2024 | Mercury | MR | 6 | SDWIS / 055294902 / 1035 |
| 2024 | Nickel | MR | 6 | SDWIS / 055294902 / 1036 |
| 2024 | Cadmium | MR | 6 | SDWIS / 055294902 / 1015 |
| 2024 | Chromium | MR | 6 | SDWIS / 055294902 / 1020 |
| 2024 | Asbestos | MR | 5 | SDWIS / 055294902 / 1094 |
| 2020 | Endrin | MR | 3 | SDWIS / 055294902 / 2005 |
How UPPER SIOUX COMMUNITY Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | UPPER SIOUX COMMUNITY | 05 avg | Federal benchmark |
|---|---|---|---|
| Total violations | 184 | 173 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 0 | 3.9 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 38.5% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 1,900 | 1,277 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 113 regulated public water systems in 05.
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
Is UPPER SIOUX COMMUNITY water safe to drink? ▼
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Related Data for 05
Read our methodology — how this data is sourced, computed, and verified.