OTTAWA

Illinois — Community Water System — PWSID: IL0990800

System Information

PWSIDIL0990800
System NameOTTAWA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedDec 4, 2025

Location & Contact

StateIllinois
CityOTTAWA
ZIP Code61350
AddressCity of Ottawa
OrganizationDUTTLINGER, THOMAS A.
Phone815-433-0161

Population & Service

Population Served18,097
Service Connections8,049

Drinking Water Violations (362)

This water system has 362 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
Jul 2, 2025 LEAD AND COPPER RULE REVISIONS RPT No No Unaddressed Lead and Copper Rule Revisions
Jul 2, 2025 LEAD AND COPPER RULE REVISIONS RPT No No Unaddressed Lead and Copper Rule Revisions
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MCL Yes No 8 PCI/L 5 pCi/L 5 Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Oct 1, 2022 Dec 31, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Oct 1, 2022 Dec 31, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Oct 1, 2022 Dec 31, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Dec 31, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2022 Sep 30, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Sep 30, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2022 Sep 30, 2022 Combined Radium (-226 and -228) MR No Yes 5 pCi/L Resolved Sep 30, 2022 Radionuclides and Revised Rad Rule
Jan 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Dec 31, 2022 TTHM MR No Yes 0.080 mg/L Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2022 Carbon tetrachloride MR No Yes 0.005 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 trans-1,2-Dichloroethylene MR No Yes 0.1 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 Xylenes, Total MR No Yes 10 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 Carbon tetrachloride MR No Yes 0.005 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 Ethylbenzene MR No Yes 0.7 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 Toluene MR No Yes 1 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 Xylenes, Total MR No Yes 10 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 1,1,1-Trichloroethane MR No Yes 0.2 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 DICHLOROMETHANE MR No Yes 0.005 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals
Jan 1, 2020 Dec 31, 2022 CHLOROBENZENE MR No Yes 0.1 mg/L Resolved Dec 31, 2022 Volatile Organic Chemicals

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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