Public water system record
Gratiot Waterworks
Serves Gratiot, Lafayette County, WI · 224 people served
Federal records show 2 health-based violations and 42 monitoring/reporting issues for Gratiot Waterworks in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 42
Key facts
- Gratiot Waterworks draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 1991, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 116 service lines.
Check whether Gratiot 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 |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Mar 1, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 15, 2020 | Resolved | No |
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
|
Aug 1, 2025 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jun 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2023 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2014 | Active |
Full record since 1991
EPA's records for Gratiot Waterworks go back to 1991. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 43 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 30 |
| 2000s | 2 | 4 |
| 2010 to October 18, 2016 | 2 | 9 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 2 | 40 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2013, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
What the violations mean
Groundwater Rule
2 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Gratiot Waterworks draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Gratiot 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 Gratiot 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