Public water system record
Nilwood
Serves Nilwood, Macoupin County, IL · 1,394 people served
Federal records show no health-based violations and 7 monitoring/reporting issues for Nilwood 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
- 7
Key facts
- Nilwood buys its water from Otter Lake Water Commission.
- Record on file since 1992, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 571 service lines.
Check whether Nilwood 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 |
|---|---|---|
|
Chloramine
Monitoring and reporting
|
Mar 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Jan 13, 2022 | Resolved |
|
Public Notice
OTHER
|
Jan 13, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2020 | Resolved |
|
Chloramine
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
Full record since 1992
EPA's records for Nilwood go back to 1992. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 10 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 5 | 2 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 1 | 6 |
| 2020s | 0 | 7 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began July 2010, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2010 | Resolved |
|
Lead and Copper Rule
Treatment technique failure
|
Jan 1, 1999 | Resolved |
|
Lead and Copper Rule
Treatment technique failure
|
Nov 23, 1998 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Apr 1, 1994 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Jan 1, 1994 | Resolved |
|
Atrazine
Contaminant limit exceeded
|
Oct 1, 1993 | Resolved |
Where the water comes from
Nilwood buys its water from Otter Lake Water Commission. It lists no wells or intakes of its own.
Buys water from
- Otter Lake Water Commission Virden, IL
Annual water quality report
Nilwood 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