Public water system record
Shell Lake Waterworks
Serves Shell Lake, Washburn County, WI · 950 people served
Federal records show 1 health-based violation and 3 monitoring/reporting issues for Shell Lake 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
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Shell Lake Waterworks draws water from 2 wells.
- Most recent enforcement action: boil water order by Wisconsin, October 2014.
- Record on file since 1995, with 13 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 165 unknown out of 659 service lines.
Check whether Shell Lake 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 |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Resolved |
|
Public Notice
OTHER
|
Oct 17, 2024 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
Full record since 1995
EPA's records for Shell Lake Waterworks go back to 1995. Before October 20, 2016 they list 13 health-based violations (12 resolved, 1 archived by EPA without a recorded fix) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 2 |
| 2000s | 6 | 5 |
| 2010 to October 19, 2016 | 3 | 0 |
| 2020s | 1 | 3 |
Most recent health-based violation before October 20, 2016: Total Coliform, began October 2014, Resolved.
Show all 13 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1995 | Resolved |
Enforcement actions
Wisconsin regulators issued 6 boil water orders to Shell Lake Waterworks between 1995 and 2014. The most recent was a boil water order in October 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 24, 2014 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Sep 26, 2002 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Nov 17, 2000 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Oct 8, 1997 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Mar 13, 1997 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Jan 23, 1995 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
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
Shell Lake Waterworks draws water from 2 wells.
Annual water quality report
Shell Lake 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