Public water system record
City of Mercer
Serves Mercer, McLean County, ND · 94 people served
Federal records show no health-based violations and 15 monitoring/reporting issues for City of Mercer 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
- 15
Key facts
- City of Mercer buys its water from McLean-Sheridan Water District-System 1.
- Record on file since 1981, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 88 unknown out of 88 service lines.
Check whether City of Mercer 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 |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 26, 2010 | Active |
Full record since 1981
EPA's records for City of Mercer go back to 1981. Before October 19, 2016 they list 3 health-based violations (3 archived by EPA without a recorded fix) and 30 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 2 | 14 |
| 2000s | 0 | 11 |
| 2010 to October 18, 2016 | 0 | 5 |
| October 19, 2016 to 2019 | 0 | 4 |
| 2020s | 0 | 10 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 1998, Archived.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1998 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 1998 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Sep 30, 1981 | Archived |
Where the water comes from
City of Mercer buys its water from McLean-Sheridan Water District-System 1. It lists no wells or intakes of its own.
Buys water from
- McLean-Sheridan Water District-System 1 Turtle Lake, ND
Annual water quality report
City of Mercer 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 Mercer 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