Public water system record
Montreal Waterworks
Serves Montreal, Iron County, WI · 887 people served
Federal records show 2 health-based violations and 5 monitoring/reporting issues for Montreal Waterworks in the last ten years. The most serious issue in this window was a resolved Stage 1 Disinfection Byproducts Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 5
Key facts
- Montreal Waterworks draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by EPA, August 2010.
- Record on file since 1993, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 278 unknown out of 514 service lines.
Check whether Montreal 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 | May 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 2, 2018 | 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 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Jun 1, 2023 | Resolved |
|
Public Notice
OTHER
|
May 2, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 8, 2016 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2011 | Active |
Full record since 1993
EPA's records for Montreal Waterworks go back to 1993. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 163 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 94 |
| 2000s | 1 | 52 |
| 2010 to October 18, 2016 | 3 | 17 |
| October 19, 2016 to 2019 | 1 | 1 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Stage 1 Disinfection Byproducts Rule, began April 2016, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Apr 16, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 63.43 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Oct 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1993 | Resolved |
Enforcement actions
Wisconsin regulators and EPA took 1 formal enforcement action against Montreal Waterworks and issued 2 boil water orders between 1996 and 2010. The most recent was a compliance order (no penalty) in August 2010.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 27, 2010 | EPA | Compliance order (no penalty) | 3 violations: Stage 2 Disinfection Byproducts Rule, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Aug 2, 2002 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Oct 18, 1996 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
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
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Montreal Waterworks draws water from 2 wells. 2 other community water systems buy water from Montreal Waterworks.
Community systems that buy water from it
- Hurley Waterworks Hurley, WI
- Pence Waterworks Pence, WI
Annual water quality report
Montreal 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