Tap Truth EPA drinking water records, in plain English

Public water system record

Oglala RWS Pipeline

Serves an area of Oglala Lakota County, SD that includes Porcupine · 3,562 people served

Federal records show 1 health-based violation and 1 monitoring/reporting issue for Oglala RWS Pipeline in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • 084690480
  • PINE RIDGE
  • SD
  • 3,562 served

System profile

Source water Groundwater
ZIP 57770
EPA system ID 084690480

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Oglala RWS Pipeline draws water from 5 wells.
  • Record on file since 1976, with 21 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 599 unknown out of 663 service lines.

Check whether Oglala RWS Pipeline serves your address

Address suggestions by Mapbox

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Groundwater Rule
Treatment technique failure
 140 Jan 1, 2020 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
p-Dichlorobenzene
Monitoring and reporting
 Jan 1, 2024 Resolved

Full record since 1976

EPA's records for Oglala RWS Pipeline go back to 1976. Before October 19, 2016 they list 21 health-based violations (21 archived by EPA without a recorded fix) and 26 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 2
1980s 1 9
1990s 20 15
2020s 1 1

Most recent health-based violation before October 19, 2016: Total Coliform, began September 1996, Archived.

Show all 21 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Sep 1, 1996 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1996 Archived
Total Coliform
Contaminant limit exceeded
 Dec 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Nov 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1995 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
Total Coliform
Contaminant limit exceeded
 Jun 1, 1993 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1992 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1992 Archived
Total Coliform (acute)
Contaminant limit exceeded
 Aug 1, 1992 Archived
Total Coliform (acute)
Contaminant limit exceeded
 Aug 1, 1992 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1992 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1992 Archived
Total Coliform
Contaminant limit exceeded
 Jun 1, 1992 Archived
Selenium
Contaminant limit exceeded
 Sep 30, 1982 Archived

What the violations mean

Groundwater Rule

1 incident

The 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

Oglala RWS Pipeline draws water from 5 wells.

Annual water quality report

Oglala RWS Pipeline 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