Public water system record
Hillsboro City
Serves Hillsboro, Highland County, OH · 6,650 people served
Federal records show no health-based violations and 7 monitoring/reporting issues for Hillsboro City 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
- 7
Key facts
- Hillsboro City draws water from 3 surface water intakes.
- Most recent formal enforcement: compliance order (no penalty) by Ohio, September 1994.
- Record on file since 1993, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 32 lead and 2,427 unknown out of 3,329 service lines.
Check whether Hillsboro City 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 | Active |
|
Consumer Confidence Rule
OTHER
|
Sep 5, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Feb 10, 2020 | Active |
|
Consumer Confidence Rule
OTHER
|
Nov 2, 2018 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
Full record since 1993
EPA's records for Hillsboro City go back to 1993. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 5 | 1 |
| 2000s | 1 | 4 |
| 2010 to October 18, 2016 | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 0 | 4 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began October 2007, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Resolved |
Enforcement actions
Ohio regulators took 1 formal enforcement action against Hillsboro City in 1994. The most recent was a compliance order (no penalty) in September 1994.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 13, 1994 | Ohio | Compliance order (no penalty) | 6 violations (5 health-based): Surface Water Treatment Rule |
Where the water comes from
Hillsboro City draws water from 3 surface water intakes.
Annual water quality report
Hillsboro City 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 Ohio.
Certified drinking water labs by state EPA guidance for private wells