Public water system record
Monroe City PWS
Serves Monroe, Butler County, OH · 15,600 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for Monroe City PWS 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
- Monroe City PWS buys its water from Butler Co. Water District 2 PWS.
- Most recent formal enforcement: compliance order (no penalty) by EPA, May 2009.
- Record on file since 1992, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 4,570 unknown out of 4,582 service lines.
Check whether Monroe City PWS 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 |
|---|---|---|
|
Public Notice
OTHER
|
May 14, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Nov 2, 2021 | Active |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
Full record since 1992
EPA's records for Monroe City PWS go back to 1992. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 26 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 8 |
| 2000s | 0 | 14 |
| 2010 to October 18, 2016 | 0 | 4 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 0 | 6 |
Most recent health-based violation before October 19, 2016: Total Coliform, began November 1993, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1993 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Nov 1, 1993 | Resolved |
Enforcement actions
EPA took 1 formal enforcement action against Monroe City PWS in 2009. The most recent was a compliance order (no penalty) in May 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 19, 2009 | EPA | Compliance order (no penalty) | 3 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Stage 2 Disinfection Byproducts Rule |
Where the water comes from
Monroe City PWS buys its water from Butler Co. Water District 2 PWS. It lists no wells or intakes of its own.
Buys water from
- Butler Co. Water District 2 PWS Hamilton, OH
Annual water quality report
Monroe City PWS 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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 Ohio.
Certified drinking water labs by state EPA guidance for private wells