Public water system record
Lemont
Serves Lemont, Cook County, IL · 17,500 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Lemont in the last ten years, including an unresolved Lead and Copper Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Lemont draws water from 5 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 1977, with 13 health-based violations before October 19, 2016.
- Lead pipe inventory: 85 lead and 1,553 unknown out of 6,396 service lines.
Check whether Lemont 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
Treatment technique failure
|
350 | Aug 31, 2025 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Resolved |
Full record since 1977
EPA's records for Lemont go back to 1977. Before October 19, 2016 they list 13 health-based violations (12 resolved, 1 archived by EPA without a recorded fix) and 21 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 5 | 0 |
| 1990s | 3 | 16 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 5 | 2 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began October 2015, Resolved.
Show all 13 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
Oct 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
Jul 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
Apr 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
Jan 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 26 pCi/L, federal limit 5 pCi/L (5.2 times the limit)
|
Jan 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1998 | Archived |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Dec 5, 1997 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Feb 18, 1992 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Oct 1, 1988 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 1, 1988 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Oct 1, 1984 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Sep 14, 1984 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Oct 17, 1980 | Resolved |
What the violations mean
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Lemont draws water from 5 wells (1 of them for emergency, seasonal or other part-time use). 1 other community water system and 1 smaller public system such as schools, businesses or campgrounds buy water from Lemont.
Community systems that buy water from it
- Franciscan Sisters of Chicago Lemont, IL
Annual water quality report
Lemont 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