Public water system record
Winneconne Waterworks
Serves an area of Winnebago County, WI that includes Winneconne · 2,502 people served
Federal records show 13 health-based violations and 3 monitoring/reporting issues for Winneconne Waterworks in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 13
- Resolved
- 13
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Winneconne Waterworks draws water from 2 wells.
- Highest measured level in the last 10 years: Gross Alpha, Excl. Radon and U, 24.62 pCi/L, federal limit 15 pCi/L (1.6 times the limit), 2023.
- Most recent formal enforcement: compliance order (no penalty) by Wisconsin, October 2024.
- Record on file since 1994, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,149 service lines.
Check whether Winneconne 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 15.67 pCi/L, federal limit 15 pCi/L (at or just above the limit)
|
340 | Jul 1, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22.3 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
|
340 | Jan 1, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 24.62 pCi/L, federal limit 15 pCi/L (1.6 times the limit)
|
340 | Oct 1, 2023 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19.392 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
340 | Jul 1, 2023 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
340 | Apr 1, 2023 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 15.9417 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Jul 1, 2021 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16.52 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Jul 1, 2018 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16.25 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Jan 1, 2018 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19.3 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
340 | Oct 1, 2017 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22.82 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
|
340 | Jul 1, 2017 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22.53 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
|
340 | Apr 1, 2017 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19.02 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
340 | Jan 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Oct 17, 2024 | Resolved |
|
Groundwater Rule
OTHER
|
Apr 15, 2024 | Resolved |
|
Public Notice
OTHER
|
Feb 26, 2024 | Resolved |
Full record since 1994
EPA's records for Winneconne Waterworks go back to 1994. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 8 |
| 2000s | 3 | 6 |
| 2010 to October 18, 2016 | 0 | 1 |
| October 19, 2016 to 2019 | 6 | 0 |
| 2020s | 7 | 3 |
Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began January 2009, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
Jan 1, 2009 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jul 1, 2000 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Apr 1, 2000 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jan 1, 1997 | Resolved |
Enforcement actions
Wisconsin regulators took 12 formal enforcement actions against Winneconne Waterworks between 2017 and 2024, filed as 17 records in EPA's data. The most recent was a compliance order (no penalty) in October 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 21, 2024 | Wisconsin | Compliance order (no penalty) | 2 violations (2 health-based): Gross Alpha, Excl. Radon and U |
| Apr 1, 2024 | Wisconsin | Compliance order (no penalty) | 2 violations (2 health-based): Gross Alpha, Excl. Radon and U |
| Nov 22, 2023 | Wisconsin | Compliance order (no penalty) | 2 violations (2 health-based): Gross Alpha, Excl. Radon and U |
| Oct 2, 2023 | Wisconsin | Compliance order (no penalty) | 2 violations (2 health-based): Gross Alpha, Excl. Radon and U |
| Jul 6, 2023 | Wisconsin | Compliance order (no penalty) | 2 violations (2 health-based): Combined Radium (-226 and -228) |
| Feb 14, 2022 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Nov 28, 2018 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Apr 15, 2018 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Feb 14, 2018 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Jan 29, 2018 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Dec 9, 2017 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Jul 14, 2017 | Wisconsin | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
What the violations mean
Gross Alpha, Excl. Radon and U
11 incidentsTest results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Combined Radium (-226 and -228)
1 incidentTest results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Winneconne Waterworks draws water from 2 wells.
Annual water quality report
Winneconne 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.
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 Wisconsin.
Certified drinking water labs by state EPA guidance for private wells