TINLEY PARK, IL · Cook County
TINLEY PARK MHC Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of January 2, 2013. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Cook County, IL.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.
System facts
- System ID (PWSID)
- IL0317850
- System type
- Community Water System
- Population served
- 300
- Service connections
- 20
- Ownership
- state government
- Water source
- surface water (rivers, lakes, or reservoirs)
TINLEY PARK MHC is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, formerly serving 300 people from surface water.
EPA's federal records list this system as inactive in 2013; the record below is historical.
As of August 1, 2026, its federal record holds 5 entries between 1977 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.
All 5 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Lead and Copper Rule, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and the Radionuclides and Revised Rad Rule.
Violation history
Lead Consumer Notice
—Lead and Copper Rule
October 2, 2011 – October 26, 2011
ResolvedMonitoring and Reporting (DBP)
—TTHM
July 1, 2010 – September 30, 2010
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
July 1, 2010 – September 30, 2010
ResolvedInitial Tap Sampling for Pb and Cu
—Lead and Copper Rule
October 1, 1994 – December 31, 1995
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 2, 2011 – October 26, 2011 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| October 1, 1994 – December 31, 1995 | Initial Tap Sampling for Pb and Cu | Lead and Copper Rule | — | Resolved |
| June 30, 1977 – June 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- October 4, 2011State Violation/Reminder Notice1 linked violation
- January 10, 2011State Compliance achieved2 linked violations
- October 13, 2010State Violation/Reminder Notice52 linked violations
- October 13, 2010State Public Notification requested2 linked violations
- April 9, 1998State Compliance achieved1 linked violation
- December 31, 1995State Compliance achieved1 linked violation
- July 1, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
ARNOLD, MARVA
708-614-4047
TINLEY PARK, IL 60477