Public water system record
Grafton Waterworks
Serves Grafton, Ozaukee County, WI · 12,269 people served
Federal records show no health-based violations and no monitoring or reporting issues for Grafton Waterworks in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Grafton Waterworks draws water from 6 wells.
- Record on file since 1994, with 2 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 4,444 service lines.
Check whether Grafton 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.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1994
EPA's records for Grafton Waterworks go back to 1994. Before October 20, 2016 they list 2 health-based violations (2 resolved) and 133 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 2 |
| 2000s | 1 | 131 |
Most recent health-based violation before October 20, 2016: Total Coliform, began June 2000, Resolved.
Show all 2 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1994 | Resolved |
Where the water comes from
Grafton Waterworks draws water from 6 wells.
Annual water quality report
Grafton 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 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 Wisconsin.
Certified drinking water labs by state EPA guidance for private wells