Public water system record
Grand Lake Estates
Serves an area of Mercer County, OH · 103 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for Grand Lake Estates 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
- Grand Lake Estates draws water from 1 well.
- Record on file since 1991, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 57 service lines.
Check whether Grand Lake Estates 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, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Active |
|
Consumer Confidence Rule
OTHER
|
Nov 14, 2018 | Resolved |
Full record since 1991
EPA's records for Grand Lake Estates go back to 1991. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 76 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 18 |
| 2000s | 1 | 55 |
| 2010 to October 18, 2016 | 1 | 3 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 7 |
Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began February 2016, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
Feb 3, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2000 | Resolved |
Where the water comes from
Grand Lake Estates draws water from 1 well.
Annual water quality report
Grand Lake Estates 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 Grand Lake Estates 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 Ohio.
Certified drinking water labs by state EPA guidance for private wells