Public water system record
Assumption
Serves Assumption, Christian County, IL · 1,315 people served
Federal records show 4 health-based violations and 13 monitoring/reporting issues for Assumption in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 13
Key facts
- Assumption draws water from 3 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by Illinois, April 2025.
- Record on file since 1977, with 0 health-based violations before October 19, 2016.
Check whether Assumption 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2024 | Resolved | No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jul 1, 2019 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Oct 13, 2025 | Active |
|
Public Notice
OTHER
|
Oct 13, 2025 | Active |
|
Public Notice
OTHER
|
Oct 13, 2025 | Active |
|
Public Notice
OTHER
|
Aug 22, 2025 | Active |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Nitrate
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Nitrate
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Nitrate
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Jul 12, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 21, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
Full record since 1977
EPA's records for Assumption go back to 1977. Before October 19, 2016 they list no health-based violations and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 2000s | 0 | 1 |
| October 19, 2016 to 2019 | 1 | 0 |
| 2020s | 3 | 13 |
Enforcement actions
Illinois regulators took 1 formal enforcement action against Assumption in 2025. The most recent was a compliance order (no penalty) in April 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 7, 2025 | Illinois | Compliance order (no penalty) | 4 violations (2 health-based): Total Trihalomethanes (TTHMs), Public Notice |
What the violations mean
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Nitrate
1 incidentNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Assumption draws water from 3 wells.
Annual water quality report
Assumption 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