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ROUND LAKE

Illinois — Community Water System — PWSID: IL0971500

System Information

PWSIDIL0971500
System NameROUND LAKE
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedFeb 13, 1981
Last ReportedDec 4, 2025

Location & Contact

StateIllinois
CityROUND LAKE
ZIP Code60073
Address442 N Cedar Lake Rd
OrganizationSCHROFF, BRANDY
Phone847-546-5400

Population & Service

Population Served18,430
Service Connections5,014

Drinking Water Violations (27)

This water system has 27 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
Dec 3, 2023 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2023 Consumer Confidence Rule
Dec 3, 2023 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2023 Consumer Confidence Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2024 Lead and Copper Rule
Dec 1, 2006 Dec 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2006 Total Coliform Rule
Dec 1, 2006 Dec 31, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2006 Total Coliform Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Mar 27, 1992 Mar 26, 1996 Combined Radium (-226 and -228) MCL Yes No 7.7 5 pCi/L — Resolved Jun 30, 1992 Radionuclides and Revised Rad Rule
Mar 27, 1992 Mar 26, 1996 Combined Radium (-226 and -228) MCL Yes No 7.7 5 pCi/L — Resolved Jun 30, 1992 Radionuclides and Revised Rad Rule
Mar 27, 1992 Mar 26, 1996 Combined Radium (-226 and -228) MCL Yes No 7.7 5 pCi/L — Resolved Jun 30, 1992 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 1, 1985 Aug 31, 1989 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Resolved Oct 15, 1987 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Sep 24, 1981 Sep 23, 1985 Gross Alpha, Excl. Radon and U MCL Yes No 19.9 15 pCi/L — Archived Sep 23, 1985 Radionuclides and Revised Rad Rule
Jun 30, 1977 Jun 29, 1981 Gross Alpha, Excl. Radon and U MR No No — 15 pCi/L — Archived Jun 29, 1981 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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