Public water system record
Granton Waterworks
Serves Granton, Clark County, WI · 349 people served
Federal records show 1 health-based violation and 4 monitoring/reporting issues for Granton Waterworks in the last ten years. The most serious issue in this window was a ETHYLENE DIBROMIDE violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Granton Waterworks draws water from 2 wells.
- Highest measured level in the last 10 years: ETHYLENE DIBROMIDE, 0.183 µg/L, federal limit 0.05 µg/L (3.7 times the limit), 2025.
- Record on file since 1992, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 202 service lines.
Check whether Granton Waterworks 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
ETHYLENE DIBROMIDE
Contaminant limit exceeded
Measured 0.183 µg/L, federal limit 0.05 µg/L (3.7 times the limit)
|
320 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1992
EPA's records for Granton Waterworks go back to 1992. Before October 19, 2016 they list 6 health-based violations (5 resolved, 1 archived by EPA without a recorded fix) and 12 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 0 |
| 2000s | 1 | 4 |
| 2010 to October 18, 2016 | 1 | 8 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: ETHYLENE DIBROMIDE, began July 2014, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
ETHYLENE DIBROMIDE
Contaminant limit exceeded
Measured 0.0565 µg/L, federal limit 0.05 µg/L (1.1 times the limit)
|
Jul 1, 2014 | Resolved |
|
ETHYLENE DIBROMIDE
Contaminant limit exceeded
|
Apr 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1993 | Resolved |
|
ETHYLENE DIBROMIDE
Contaminant limit exceeded
|
Apr 1, 1992 | Archived |
What the violations mean
ETHYLENE DIBROMIDE
1 incidentTest results for ETHYLENE DIBROMIDE were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Granton Waterworks draws water from 2 wells.
Annual water quality report
Granton Waterworks 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 Granton Waterworks 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 Wisconsin.
Certified drinking water labs by state EPA guidance for private wells