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Public water system record

Ashwaubenon Waterworks

Serves Green Bay and Ashwaubenon, Brown County, WI · 17,730 people served

Federal records show no health-based violations and 1 monitoring/reporting issue for Ashwaubenon Waterworks in the last ten years.

  • WI4050456
  • ASHWAUBENON
  • WI
  • 17,730 served

System profile

Source water Purchased surface water
ZIP 54304
EPA system ID WI4050456

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Ashwaubenon Waterworks buys its water from Green Bay Waterworks.
  • Most recent formal enforcement: compliance order (no penalty) by Wisconsin, December 2003.
  • Record on file since 1978, with 17 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 6,153 service lines.

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Health-based violations

Since October 2016

Violation 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 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2025 Resolved

Full record since 1978

EPA's records for Ashwaubenon Waterworks go back to 1978. Before October 19, 2016 they list 17 health-based violations (15 resolved, 2 archived by EPA without a recorded fix) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 1 0
1980s 2 0
1990s 10 0
2000s 4 0
2020s 0 1

Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began January 2001, Resolved.

Show all 17 health-based violations before October 19, 2016
Contaminant Start date Status
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8.2 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
 Jan 1, 2001 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
 Jan 1, 2001 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.3 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
 Jan 1, 2000 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
 Jan 1, 2000 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 23 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
 Jan 1, 1999 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.3 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
 Jan 1, 1999 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 20 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
 Jan 1, 1998 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.6 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
 Jan 1, 1998 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.8 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
 Jan 1, 1997 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 30 pCi/L, federal limit 15 pCi/L (2 times the limit)
 Jan 1, 1997 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
 Jan 1, 1996 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.8 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 Jan 1, 1996 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.6 pCi/L, federal limit 5 pCi/L (1.3 times the limit)
 Jan 1, 1995 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
 Jan 1, 1995 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
 Dec 30, 1987 Archived
Combined Radium (-226 and -228)
Contaminant limit exceeded
 Oct 1, 1984 Resolved
Fluoride
Contaminant limit exceeded
 Oct 31, 1978 Archived

Enforcement actions

Wisconsin regulators took 1 formal enforcement action against Ashwaubenon Waterworks in 2003, filed as 14 records in EPA's data. The most recent was a compliance order (no penalty) in December 2003.

Date By Action Violations covered
Dec 13, 2003 Wisconsin Compliance order (no penalty) 14 violations (14 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U

Where the water comes from

Ashwaubenon Waterworks buys its water from Green Bay Waterworks. EPA also lists 4 wells, all for emergency, seasonal or other part-time use. 3 other community water systems buy water from Ashwaubenon Waterworks.

Buys water from

Community systems that buy water from it

Annual water quality report

Ashwaubenon 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