Public water system record
Dorchester
Serves Dorchester, Macoupin County, IL · 562 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Dorchester 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
- 2
Key facts
- Dorchester buys its water from Gillespie.
- Most recent formal enforcement: signed compliance agreement by Illinois, March 2011.
- Record on file since 1992, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 57 unknown out of 230 service lines.
Check whether Dorchester 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 |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
Full record since 1992
EPA's records for Dorchester go back to 1992. Before October 19, 2016 they list 8 health-based violations (6 resolved, 2 archived by EPA without a recorded fix) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 8 | 9 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 0 | 2 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Atrazine, began July 1997, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Atrazine
Contaminant limit exceeded
|
Jul 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Apr 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Jan 1, 1997 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Jul 1, 1996 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Apr 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1995 | Archived |
Enforcement actions
Illinois regulators took 1 formal enforcement action against Dorchester in 2011. The most recent was a signed compliance agreement in March 2011.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 2, 2011 | Illinois | Signed compliance agreement | 1 violation: Consumer Confidence Rule |
Where the water comes from
Dorchester buys its water from Gillespie. It lists no wells or intakes of its own.
Buys water from
- Gillespie Gillespie, IL
Annual water quality report
Dorchester 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 Illinois.
Certified drinking water labs by state EPA guidance for private wells