Public water system record
Wounded Knee Water System
Serves Wounded Knee, Oglala Lakota County, SD · 255 people served
Federal records show 2 health-based violations and 11 monitoring/reporting issues for Wounded Knee Water System in the last ten years. The most serious issue in this window was a resolved Long Term 2 Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 11
Key facts
- Wounded Knee Water System buys its water from Kyle Water System.
- Record on file since 1976, with 13 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 55 unknown out of 55 service lines.
Check whether Wounded Knee Water System 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 |
|---|---|---|---|---|
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 3, 2022 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Mar 1, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2022 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 1998 | Resolved |
Full record since 1976
EPA's records for Wounded Knee Water System go back to 1976. Before October 19, 2016 they list 13 health-based violations (1 resolved, 12 archived by EPA without a recorded fix) and 47 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1980s | 0 | 9 |
| 1990s | 12 | 24 |
| 2000s | 1 | 5 |
| 2010 to October 18, 2016 | 0 | 7 |
| October 19, 2016 to 2019 | 1 | 3 |
| 2020s | 1 | 6 |
Most recent health-based violation before October 19, 2016: Total Coliform, began November 2002, Resolved.
Show all 13 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1994 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1994 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 1994 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1994 | Archived |
What the violations mean
Long Term 2 Enhanced Surface Water Treatment Rule
1 incidentThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Wounded Knee Water System buys its water from Kyle Water System. It lists no wells or intakes of its own.
Buys water from
- Kyle Water System Pine Ridge, SD
Annual water quality report
Wounded Knee Water System 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Wounded Knee Water System for a copy.
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