Public water system record
Theresa Waterworks
Serves Theresa, Dodge County, WI · 1,262 people served
Federal records show 2 health-based violations and 10 monitoring/reporting issues for Theresa Waterworks in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 10
Key facts
- Theresa Waterworks draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 1993, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 619 service lines.
Check whether Theresa 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 |
|---|---|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Sep 3, 2025 | Resolved | No |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | 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 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2017 | Resolved |
Full record since 1993
EPA's records for Theresa Waterworks go back to 1993. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 93 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 69 |
| 2000s | 0 | 22 |
| 2010 to October 18, 2016 | 1 | 2 |
| October 19, 2016 to 2019 | 0 | 9 |
| 2020s | 2 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2014, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
What the violations mean
Stage 1 Disinfection Byproducts Rule
1 incidentThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
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.
Where the water comes from
Theresa Waterworks draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Theresa 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