ONARGA

Illinois — Community Water System — PWSID: IL0750700

System Information

PWSIDIL0750700
System NameONARGA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedFeb 26, 2026

Location & Contact

StateIllinois
CityONARGA
ZIP Code60955
AddressVILLAGE OF ONARGA
OrganizationHAMILTON, TIM
Phone815-268-7311

Population & Service

Population Served1,409
Service Connections500

Drinking Water Violations (33)

This water system has 33 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Oct 16, 2024 Other No No Resolved Dec 3, 2024
Oct 16, 2024 Other No No Resolved Dec 3, 2024
Oct 16, 2024 Other No No Resolved Dec 3, 2024
Oct 16, 2024 Other No No Resolved Dec 3, 2024
Aug 1, 2023 Aug 31, 2023 MON No Yes Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No Yes Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No Yes Resolved Aug 31, 2023
Aug 1, 2023 Aug 31, 2023 MON No Yes Resolved Aug 31, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 4.0 mg/L Resolved Sep 25, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 4.0 mg/L Resolved Sep 25, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 4.0 mg/L Resolved Sep 25, 2023
Jul 1, 2023 Sep 30, 2023 MR No Yes 4.0 mg/L Resolved Sep 25, 2023
Jul 1, 2021 MR No No TT Resolved Feb 15, 2022
Jul 1, 2021 MR No No TT Resolved Feb 15, 2022
Jul 1, 2021 MR No No TT Resolved Feb 15, 2022
Jul 1, 2021 MR No No TT Resolved Feb 15, 2022
Jul 1, 2020 Other No No Resolved Jul 17, 2020
Jul 1, 2020 Other No No Resolved Jul 17, 2020
Oct 1, 2000 Dec 31, 2000 MR No No TT Resolved Dec 31, 2000
Jan 1, 1994 TT Yes No TT Resolved Jan 25, 1995
Jun 30, 1977 Jun 29, 1981 MR No No 15 pCi/L Archived Jun 29, 1981
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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