Public water system record
City of Sentinel Butte
Serves Sentinel Butte, Golden Valley County, ND · 56 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for City of Sentinel Butte in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 8
Key facts
- City of Sentinel Butte buys its water from Southwest Water Authority.
- Record on file since 1983, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 75 unknown out of 75 service lines.
Check whether City of Sentinel Butte 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 |
|---|---|---|
|
Chloramine
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2019 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
Full record since 1983
EPA's records for City of Sentinel Butte go back to 1983. Before October 19, 2016 they list 3 health-based violations (3 archived by EPA without a recorded fix) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 2 | 1 |
| 2010 to October 18, 2016 | 0 | 4 |
| October 19, 2016 to 2019 | 0 | 5 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 1993, Archived.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1993 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1993 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Apr 1, 1983 | Archived |
Where the water comes from
City of Sentinel Butte buys its water from Southwest Water Authority. EPA also lists 1 well, all for emergency, seasonal or other part-time use.
Buys water from
- Southwest Water Authority Dickinson, ND
Annual water quality report
City of Sentinel Butte 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 City of Sentinel Butte 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 North Dakota.
Certified drinking water labs by state EPA guidance for private wells