Public water system record
Tri-County Rural Water System
Serves an area of Dewey County, Ziebach County and 1 more county, SD that includes Eagle Butte, La Plant, North Eagle Butte and 9 more places · 2,190 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Tri-County Rural Water System in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Tri-County Rural Water System draws water from 1 surface water intake.
- Most recent formal enforcement: compliance order with a penalty by South Dakota, October 2005.
- Record on file since 1976, with 15 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 764 unknown out of 764 service lines.
Check whether Tri-County Rural 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
Full record since 1976
EPA's records for Tri-County Rural Water System go back to 1976. Before October 19, 2016 they list 15 health-based violations (15 resolved) and 49 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 0 | 9 |
| 2000s | 15 | 37 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began March 2009, Resolved.
Show all 15 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Mar 1, 2009 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Dec 1, 2008 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
Enforcement actions
South Dakota regulators took 1 formal enforcement action against Tri-County Rural Water System in 2005, filed as 10 records in EPA's data. The most recent was a compliance order with a penalty in October 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 5, 2005 | South Dakota | Compliance order with a penalty | 10 violations (8 health-based): Interim Enhanced Surface Water Treatment Rule, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
Where the water comes from
Tri-County Rural Water System draws water from 1 surface water intake. 4 other community water systems buy water from Tri-County Rural Water System.
Community systems that buy water from it
- Dupree Dupree, SD
- Eagle Butte Eagle Butte, SD
- Faith Faith, SD
- Isabel Isabel, SD
Annual water quality report
Tri-County Rural 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.
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 South Dakota.
Certified drinking water labs by state EPA guidance for private wells