Public water system record
Decatur
Serves Decatur, Macon County, IL · 76,122 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Decatur 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
- 1
Key facts
- Decatur draws water from 10 wells and 2 surface water intakes (11 of them for emergency, seasonal or other part-time use).
- Record on file since 1977, with 28 health-based violations before October 19, 2016.
Check whether Decatur 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 |
|---|---|---|
|
Chlorite
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
Full record since 1977
EPA's records for Decatur go back to 1977. Before October 19, 2016 they list 28 health-based violations (22 resolved, 6 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 5 | 0 |
| 1990s | 19 | 0 |
| 2000s | 4 | 0 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began April 2002, Resolved.
Show all 28 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1999 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1998 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 1997 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1997 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 1996 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1996 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1994 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 11, 1992 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
May 6, 1992 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Dec 30, 1991 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 25, 1991 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Dec 14, 1990 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 6, 1990 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 13, 1990 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Mar 8, 1990 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 17, 1989 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 11, 1988 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 31, 1985 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 4, 1984 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
May 15, 1981 | Resolved |
Where the water comes from
Decatur draws water from 10 wells and 2 surface water intakes (11 of them for emergency, seasonal or other part-time use). 2 other community water systems and 7 smaller public systems such as schools, businesses or campgrounds buy water from Decatur. 2 other public water systems have emergency connections to Decatur.
Community systems that buy water from it
- Decatur MHP, LLC Cedaredge, CO
- Mount Zion Mount Zion, IL
Annual water quality report
Decatur 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 Illinois.
Certified drinking water labs by state EPA guidance for private wells