Public water system record
Windham Water Works
Serves Willimantic and South Windham, Southeastern Connecticut Planning Region, CT · 21,214 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Windham Water Works in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Windham Water Works draws water from 1 surface water intake and 2 reservoirs.
- Most recent formal enforcement: signed compliance agreement by Connecticut, March 1995.
- Record on file since 1991, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 329 lead and 5 unknown out of 4,950 service lines.
Check whether Windham Water Works 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Chlorite
Monitoring and reporting
|
Dec 1, 2018 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1991
EPA's records for Windham Water Works go back to 1991. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 6 | 2 |
| 2000s | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began March 1995, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1991 | Resolved |
Enforcement actions
Connecticut regulators took 1 formal enforcement action against Windham Water Works in 1995. The most recent was a signed compliance agreement in March 1995.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 30, 1995 | Connecticut | Signed compliance agreement | 5 violations (5 health-based): Surface Water Treatment Rule |
Where the water comes from
Windham Water Works draws water from 1 surface water intake and 2 reservoirs.
Annual water quality report
Windham Water Works 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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 Connecticut.
Certified drinking water labs by state EPA guidance for private wells