Public water system record
Wanblee East
Serves an area of Jackson County, Bennett County and 1 more county, SD · 2,179 people served
Federal records show 2 health-based violations and 3 monitoring/reporting issues for Wanblee East in the last ten years. The most serious issue in this window was a resolved Arsenic violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Wanblee East buys its water from Mni Wiconi WTP / Coreline.
- Highest measured level in the last 10 years: Arsenic, 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit), 2025.
- Record on file since 1998, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 37 service lines.
Check whether Wanblee East serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Apr 1, 2025 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Apr 1, 2023 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 1, 2017 | Resolved |
Full record since 1998
EPA's records for Wanblee East go back to 1998. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 1 | 0 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 2 | 1 |
Most recent health-based violation before October 19, 2016: Arsenic, began January 2008, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.019 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
Jan 1, 2008 | Resolved |
What the violations mean
Arsenic
2 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Wanblee East buys its water from Mni Wiconi WTP / Coreline. EPA also lists 2 wells, all for emergency, seasonal or other part-time use. 9 other community water systems buy water from Wanblee East.
Buys water from
- Mni Wiconi WTP / Coreline Fort Pierre, SD
Community systems that buy water from it
- Allen Water System Pine Ridge, SD
- American Horse School Allen, SD
- Batesland Martin, SD
- Crazy Horse School Wanblee, SD
- Eagle Nest Homes Pine Ridge, SD
- North Allen Water System Pine Ridge, SD
- Potato Creek Water System Pine Ridge, SD
- Wakpamni Water System Pine Ridge, SD
- Wanblee Water System Pine Ridge, SD
Annual water quality report
Wanblee East must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by EPA Region 8.
Certified drinking water labs by state EPA guidance for private wells