Public water system record
Calais Water Dept
Serves Calais, Washington County, ME · 2,775 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Calais Water Dept in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Calais Water Dept draws water from 2 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2022.
- Record on file since 1995, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,018 unknown out of 1,332 service lines.
Check whether Calais Water Dept 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jan 1, 2022 | Resolved | No |
Full record since 1995
EPA's records for Calais Water Dept go back to 1995. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 3 | 0 |
| 2000s | 0 | 4 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 1998, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1998 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1995 | Resolved |
What the violations mean
Total Trihalomethanes (TTHMs)
1 incidentDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Calais Water Dept draws water from 2 wells.
Annual water quality report
Calais Water Dept 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 Maine.
Certified drinking water labs by state EPA guidance for private wells