Pine Ridge Water Quality
South Dakota
According to EPA SDWIS, Pine Ridge, South Dakota is served by 18 community water systems covering about 24,811 people. The same extract lists 39 health-based violation records, most recently coded 1005 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Pine Ridge, South Dakota is delivered through 18 EPA-regulated community water systems serving an estimated 24,811 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 39 violation records across the 18 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Arsenic, Revised Total Coliform Rule, Groundwater Rule, Long Term 2 Enhanced Surface Water Treatment Rule, Combined Uranium and 1 others.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the South Dakota drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| PINE RIDGE WATER SYSTEM | 7,482 | 3 | Health |
| KYLE WATER SYSTEM | 6,526 | 2 | Health |
| OGLALA RWS PIPELINE | 3,562 | 1 | Health |
| WANBLEE EAST | 2,179 | 5 | Health |
| WHITE HORSE CREEK WATER SYSTEM | 1,690 | 0 | Clean |
| WANBLEE WATER SYSTEM | 773 | 0 | Clean |
| RED CLOUD SCHOOL | 501 | 1 | Health |
| ALLEN WATER SYSTEM | 420 | 0 | Clean |
| SUNRISE WATER SYSTEM | 380 | 0 | Clean |
| PINE RIDGE HOSPITAL | 316 | 2 | Health |
| WOUNDED KNEE WATER SYSTEM | 255 | 3 | Health |
| EAGLE NEST HOMES | 195 | 0 | Clean |
| RED ROCKS WATER SYSTEM | 125 | 0 | Clean |
| WAKPAMNI WATER SYSTEM | 104 | 3 | Health |
| POTATO CREEK WATER SYSTEM | 95 | 0 | Clean |
| NORTH MARTIN WATER SYSTEM | 78 | 15 | Health |
| NORTH ALLEN WATER SYSTEM | 65 | 3 | Health |
| WOLF CREEK WATER SYSTEM | 65 | 1 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| WANBLEE EAST | Arsenic | 2025-04-01 |
| WANBLEE EAST | Arsenic | 2025-04-01 |
| PINE RIDGE HOSPITAL | Revised Total Coliform Rule | 2024-09-17 |
| WANBLEE EAST | Arsenic | 2023-04-01 |
| WANBLEE EAST | Arsenic | 2023-04-01 |
| WANBLEE EAST | Arsenic | 2023-04-01 |
| NORTH MARTIN WATER SYSTEM | Groundwater Rule | 2022-10-07 |
| NORTH MARTIN WATER SYSTEM | Groundwater Rule | 2022-10-07 |
| NORTH MARTIN WATER SYSTEM | Groundwater Rule | 2022-10-07 |
| NORTH ALLEN WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-09-08 |
| NORTH ALLEN WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-09-08 |
| NORTH ALLEN WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-09-08 |
| WOUNDED KNEE WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-09-03 |
| WAKPAMNI WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-08-25 |
| WAKPAMNI WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-08-25 |
| WAKPAMNI WATER SYSTEM | Long Term 2 Enhanced Surface Water Treatment Rule | 2022-08-25 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2022-01-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2022-01-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-10-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-10-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-07-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-07-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-04-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-04-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-01-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2021-01-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2020-10-01 |
| NORTH MARTIN WATER SYSTEM | Arsenic | 2020-10-01 |
| RED CLOUD SCHOOL | Groundwater Rule | 2020-01-11 |
| OGLALA RWS PIPELINE | Groundwater Rule | 2020-01-01 |
| PINE RIDGE WATER SYSTEM | Combined Uranium | 2019-10-01 |
| WOUNDED KNEE WATER SYSTEM | Groundwater Rule | 2019-03-01 |
| WOUNDED KNEE WATER SYSTEM | Groundwater Rule | 2019-03-01 |
| KYLE WATER SYSTEM | Groundwater Rule | 2018-08-02 |
| KYLE WATER SYSTEM | Groundwater Rule | 2018-08-02 |
| PINE RIDGE WATER SYSTEM | Groundwater Rule | 2018-07-24 |
| PINE RIDGE WATER SYSTEM | Groundwater Rule | 2018-07-24 |
| WOLF CREEK WATER SYSTEM | Groundwater Rule | 2017-07-01 |
| PINE RIDGE HOSPITAL | Coliform (TCR) | 2015-12-01 |
What are Pine Ridge's health-based records for?
Pine Ridge's health-based violation records carry 6 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Arsenic | 17 | 2 |
| Groundwater Rule | 12 | 7 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 7 | 3 |
| Coliform (TCR) | 1 | 1 |
| Combined Uranium | 1 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Pine Ridge, South Dakota? ▼
How many water violations does Pine Ridge have in this EPA extract? ▼
What contaminants were found in Pine Ridge water? ▼
How many water systems serve Pine Ridge? ▼
Where does Pine Ridge get its drinking water? ▼
How does Pine Ridge compare in South Dakota?
Of the 230 South Dakota places with at least one community water system on file, Pine Ridge ranks #5 by number of systems (18).
Either side of it: Piedmont (25), Spearfish (20), Aberdeen (14), Sioux Falls (8)
About This Data
Figures here are the current EPA SDWIS extract joined to the 18 community water systems whose service area lists Pine Ridge, ranked against the 230 South Dakota places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.