Public water system record
La Valle Waterworks
Serves La Valle, Sauk County, WI · 365 people served
Federal records show 6 health-based violations and 1 monitoring/reporting issue for La Valle Waterworks in the last ten years. The most serious issue in this window was a resolved Benzene violation.
System profile
- Health-based violations, last 10 years
- 6
- Resolved
- 6
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- La Valle Waterworks draws water from 1 well.
- Highest measured level in the last 10 years: Benzene, 55.73 µg/L, federal limit 5 µg/L (11 times the limit), 2020.
- Most recent formal enforcement: compliance order (no penalty) by Wisconsin, February 2021.
- Record on file since 1991, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 185 unknown out of 189 service lines.
Check whether La Valle 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 |
|---|---|---|---|---|
|
Benzene
Contaminant limit exceeded
Measured 23.45 µg/L, federal limit 5 µg/L (4.7 times the limit)
|
310 | Jan 1, 2021 | Resolved | No |
|
Benzene
Contaminant limit exceeded
|
310 | Oct 1, 2020 | Resolved | No |
|
Benzene
Contaminant limit exceeded
Measured 55.73 µg/L, federal limit 5 µg/L (11 times the limit)
|
310 | Oct 1, 2020 | Resolved | No |
|
Benzene
Contaminant limit exceeded
Measured 37.7 µg/L, federal limit 5 µg/L (7.5 times the limit)
|
310 | Jul 1, 2020 | Resolved | No |
|
Benzene
Contaminant limit exceeded
Measured 20.58 µg/L, federal limit 5 µg/L (4.1 times the limit)
|
310 | Apr 1, 2020 | Resolved | No |
|
Benzene
Contaminant limit exceeded
Measured 37.3 µg/L, federal limit 5 µg/L (7.5 times the limit)
|
310 | Jan 1, 2020 | 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
|
Mar 27, 2020 | Resolved |
Full record since 1991
EPA's records for La Valle Waterworks go back to 1991. Before October 19, 2016 they list 6 health-based violations (4 resolved, 2 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 6 | 0 |
| 2000s | 0 | 2 |
| 2020s | 6 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 1994, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 30, 1991 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1991 | Archived |
Enforcement actions
Wisconsin regulators took 1 formal enforcement action against La Valle Waterworks in 2021, filed as 6 records in EPA's data. The most recent was a compliance order (no penalty) in February 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 19, 2021 | Wisconsin | Compliance order (no penalty) | 6 violations (6 health-based): Benzene |
What the violations mean
Benzene
6 incidentsTest results for Benzene 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
La Valle Waterworks draws water from 1 well.
Annual water quality report
La Valle 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 La Valle 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