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DEKALB

Illinois — Community Water System — PWSID: IL0370100

System Information

PWSIDIL0370100
System NameDEKALB
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
CityDEKALB
ZIP Code60115
Address1216 Market St
OrganizationZIEGLER, BRAD
Phone815-748-8122

Population & Service

Population Served45,000
Service Connections11,104

Drinking Water Violations (87)

This water system has 87 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 1, 2025 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Jan 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
Jan 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
Jan 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
Jun 1, 2018 Jun 30, 2018 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2018 Revised Total Coliform Rule
Jun 1, 2018 Jun 30, 2018 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2018 Revised Total Coliform Rule
Jun 1, 2018 Jun 30, 2018 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2018 Revised Total Coliform Rule
Jun 1, 2018 Jun 30, 2018 Revised Total Coliform Rule MON No No — — — Resolved Jun 30, 2018 Revised Total Coliform Rule
Apr 1, 2018 Jun 30, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Jun 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Jun 30, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Jun 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Jun 30, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Jun 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2018 Jun 30, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Jun 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2011 Mar 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Mar 31, 2011 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 1999 Oct 31, 1999 Coliform (TCR) MR No No — 5% of samples — Archived Oct 31, 1999 Total Coliform Rule
Oct 1, 1999 Oct 31, 1999 Coliform (TCR) MR No No — 5% of samples — Archived Oct 31, 1999 Total Coliform Rule
Dec 1, 1998 May 14, 2002 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved May 14, 2002 Radionuclides and Revised Rad Rule
Dec 1, 1998 May 14, 2002 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved May 14, 2002 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Jan 1, 1995 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule
Dec 1, 1994 Nov 30, 1998 Combined Radium (-226 and -228) MCL Yes No 9.8 5 pCi/L — Resolved Nov 30, 1998 Radionuclides and Revised Rad Rule

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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