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Public water system record

City of Beloit

Serves Beloit, Rock County, WI · 36,677 people served

Federal records show 2 health-based violations and 1 monitoring/reporting issue for City of Beloit in the last ten years. The most serious issue in this window was a resolved Combined Radium (-226 and -228) violation.

  • WI1540112
  • BELOIT
  • WI
  • 36,677 served

System profile

Source water Groundwater
ZIP 53511
EPA system ID WI1540112

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
2
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • City of Beloit draws water from 7 wells.
  • Highest measured level in the last 10 years: Combined Radium (-226 and -228), 6.03 pCi/L, federal limit 5 pCi/L (1.2 times the limit), 2019.
  • Most recent formal enforcement: compliance order (no penalty) by Wisconsin, January 2021.
  • Record on file since 1991, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 1,955 lead and 10,078 unknown out of 15,174 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.

Contaminant Rule family Start date Status Acute
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.03 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Oct 1, 2019 Resolved No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6.0275 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Jul 1, 2019 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved

Full record since 1991

EPA's records for City of Beloit go back to 1991. Before October 19, 2016 they list no health-based violations and 7 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 3
2000s 0 3
2010 to October 18, 2016 0 1
October 19, 2016 to 2019 2 0
2020s 0 1

Enforcement actions

Wisconsin regulators took 2 formal enforcement actions against City of Beloit between 2020 and 2021, filed as 4 records in EPA's data. The most recent was a compliance order (no penalty) in January 2021.

Date By Action Violations covered
Jan 19, 2021 Wisconsin Compliance order (no penalty) 2 violations (2 health-based): Combined Radium (-226 and -228)
Sep 11, 2020 Wisconsin Compliance order (no penalty) 2 violations (2 health-based): Combined Radium (-226 and -228)

What the violations mean

Combined Radium (-226 and -228)

2 incidents

Test results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about each of these violations.

Where the water comes from

City of Beloit draws water from 7 wells. 1 other community water system buys water from City of Beloit.

Community systems that buy water from it

Annual water quality report

City of Beloit 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