Public water system record
Lake Zurich
Serves Lake Zurich, Kildeer, Deer Park and 2 more places, Lake County, IL · 19,759 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Lake Zurich 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
- Lake Zurich draws water from 5 wells.
- Most recent formal enforcement: signed compliance agreement by Illinois, July 2007.
- Record on file since 1977, with 35 health-based violations before October 19, 2016.
- Lead pipe inventory: 38 lead and 33 unknown out of 6,874 service lines.
Check whether Lake Zurich 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 |
|---|---|---|
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
Full record since 1977
EPA's records for Lake Zurich go back to 1977. Before October 19, 2016 they list 35 health-based violations (35 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 3 | 0 |
| 1990s | 5 | 0 |
| 2000s | 27 | 0 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began April 2009, Resolved.
Show all 35 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)
|
Apr 1, 2009 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
Jan 1, 2009 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Oct 1, 2008 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jul 1, 2008 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Apr 1, 2008 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jan 1, 2008 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Oct 1, 2007 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jul 1, 2007 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Apr 1, 2007 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jan 1, 2007 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
Oct 1, 2006 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jul 1, 2006 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Apr 1, 2006 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
Jan 1, 2006 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 1, 2003 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
May 1, 1999 | Resolved |
|
Barium
Contaminant limit exceeded
|
Jul 1, 1995 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jun 1, 1995 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
May 1, 1995 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
May 17, 1991 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 4, 1985 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Mar 1, 1985 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Mar 31, 1981 | Resolved |
Enforcement actions
Illinois regulators took 5 formal enforcement actions against Lake Zurich between 1991 and 2007. The most recent was a signed compliance agreement in July 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 3, 2007 | Illinois | Signed compliance agreement | 27 violations (27 health-based): Combined Radium (-226 and -228) |
| Sep 24, 2004 | Illinois | Signed compliance agreement | 1 violation (1 health-based): Combined Radium (-226 and -228) |
| Apr 2, 2004 | Illinois | Signed compliance agreement | 26 violations (26 health-based): Combined Radium (-226 and -228), Barium |
| Dec 20, 2001 | Illinois | Signed compliance agreement | 6 violations (6 health-based): Combined Radium (-226 and -228) |
| Dec 19, 1991 | Illinois | Compliance order (no penalty) | 1 violation (1 health-based): Combined Radium (-226 and -228) |
Where the water comes from
Lake Zurich draws water from 5 wells. 4 smaller public systems such as schools, businesses or campgrounds buy water from Lake Zurich.
Annual water quality report
Lake Zurich 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