Public water system record
Union
Serves Union, McHenry County, IL · 594 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Union in the last ten years. At least one of these issues remains unresolved.
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
- Union draws water from 1 well.
- Most recent formal enforcement: signed compliance agreement by Illinois, November 2009.
- Record on file since 1977, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 105 lead and 0 unknown out of 268 service lines.
Check whether Union 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 |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
Full record since 1977
EPA's records for Union go back to 1977. Before October 19, 2016 they list 5 health-based violations (4 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 |
| 1990s | 1 | 8 |
| 2000s | 4 | 11 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began July 2009, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2009 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Apr 1, 2009 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2006 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Apr 1, 2006 | Resolved |
|
Barium
Contaminant limit exceeded
|
Jun 19, 1992 | Archived |
Enforcement actions
Illinois regulators took 1 formal enforcement action against Union and issued 1 ban on new connections between 1992 and 2009. The most recent was a signed compliance agreement in November 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 10, 2009 | Illinois | Signed compliance agreement | 2 violations (2 health-based): Combined Radium (-226 and -228) |
| Sep 17, 1992 | Illinois | Ban on new connections or service extensions | 1 violation (1 health-based): Barium |
Where the water comes from
Union draws water from 1 well.
Annual water quality report
Union 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