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08 Water Quality
160 public water systems serving 144,980 people.
Water Systems
160
Total Violations
13,068
Violation Rate
96.3%
PFAS Detection
76.9%
10 of 13 tested
Violation Composition
How 08's 13,068 violations break down by type, per EPA SDWIS classification.
Health-based (1,547) Monitoring/Reporting (11,521)
| Metric | Value | Share |
|---|---|---|
| Public water systems | 160 | — |
| Population served | 144,980 | — |
| Total violations | 13,068 | 100% |
| Health-based violations | 1,547 | 11.8% |
| Systems with violations | 154 | 96.3% |
| PFAS detection rate | 10 of 13 | 76.9% |
Health-based violations indicate the contaminant exceeded an EPA Maximum Contaminant Level (MCL) or treatment-technique requirement. Monitoring/reporting violations indicate procedural issues (missed tests, late reports) — not necessarily a contamination event.
Largest Water Systems
BELCOURT-TURTLE MTN RURAL WATER SYSTEM
BELCOURT, 08 · 13,500 served
PINE RIDGE WATER SYSTEM
PINE RIDGE, 08 · 7,482 served
STANDING ROCK RURAL WATER SYSTEM
FORT YATES, 08 · 6,839 served
KYLE WATER SYSTEM
PINE RIDGE, 08 · 6,526 served
SICANGU MNI WICONI RURAL WATER SYSTEM
ROSEBUD, 08 · 5,610 served
ROSEBUD RURAL WATER SYSTEM
ROSEBUD, 08 · 5,500 served
TOWN OF BROWNING
BROWNING, 08 · 4,671 served
SPIRIT LAKE WATER MANAGEMENT RWS
ST. MICHAEL, 08 · 4,400 served
OGLALA RWS PIPELINE
PINE RIDGE, 08 · 3,562 served
URIAH HEEPS SPRING WATER SYSTEM
FT. DUCHESNE, 08 · 3,550 served
FORT WASHAKIE
FORT WASHAKIE, 08 · 3,520 served
ARAPAHOE COMM WATER SYSTEM
ETHETE, 08 · 3,100 served
POPLAR, CITY OF
POPLAR, 08 · 3,025 served
WOLF POINT CITY OF
WOLF POINT, 08 · 3,000 served
LAME DEER WATER SYSTEM
LAME DEER, 08 · 2,605 served
NEW TOWN, CITY OF
NEW TOWN, 08 · 2,528 served
ST. FRANCIS
ROSEBUD, 08 · 2,450 served
DAKOTA MAGIC CASINO
HANKINSON, 08 · 2,360 served
WANBLEE EAST
PINE RIDGE, 08 · 2,179 served
LOWER BRULE RURAL WATER SUPPLY SYSTEM
LOWER BRULE, 08 · 2,108 served
Most Violations
#1 HOT SPRINGS COURT SEATTLE
1,339 #2 WHITE MESA WATER SYSTEM TOWOAC
677 #3 ETHETE WATER SYSTEM FORT WASHAKIE
639 #4 ARAPAHOE COMM WATER SYSTEM ETHETE
585 #5 FORT BELKNAP AGENCY WATER SYSTEM HARLEM
575 #6 URIAH HEEPS SPRING WATER SYSTEM FT. DUCHESNE
503 #7 WHITEROCKS WATER SYSTEM FT. DUCHESNE
475 #8 FORT WASHAKIE FORT WASHAKIE
406 #9 DAKOTA MAGIC CASINO HANKINSON
309 #10 ARAPAHOE INDUSTRIAL PARK FORT WASHAKIE
295 #11 WYOLA WATER SYSTEM CROW AGENCY
292 #12 CROW AGENCY WATER SYSTEM CROW AGENCY
254 #13 FORT THOMPSON WATER SYSTEM FORT THOMPSON
224 #14 PRYOR WATER SYSTEM CROW AGENCY
222 #15 HEART BUTTE SCHOOL HEART BUTTE
218 Drinking Water Guides
Related Environmental Data for 08
Frequently Asked Questions
How many water systems are in 08? ▼
08 has 160 public water systems serving approximately 144,980 people. These include community water systems, non-transient non-community systems, and transient non-community systems regulated under the Safe Drinking Water Act.
How many drinking water violations are in 08? ▼
08 has 13,068 total drinking water violations on record, with 1,547 classified as health-based violations. 96.3% of water systems in the state have at least one violation.
Has PFAS been found in 08 drinking water? ▼
Of 13 water systems tested for PFAS in 08, 10 had PFAS detected — a 76.9% detection rate. PFAS are persistent "forever chemicals" that do not break down in the environment.
What is the violation rate for 08 water systems? ▼
08's violation rate is 96.3%. This measures the percentage of public water systems that have at least one recorded violation in the EPA SDWIS database, including both health-based and monitoring/reporting violations.
Where does this 08 water data come from? ▼
All drinking water data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS is the federal database that tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources & Methodology
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.
Read our methodology — how this data is sourced, computed, and verified.
Related
Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial
