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MERRILL WATERWORKS

Wisconsin — Community Water System — PWSID: WI7350123

System Information

PWSIDWI7350123
System NameMERRILL WATERWORKS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedJan 28, 1981
Last ReportedDec 17, 2025

Location & Contact

StateWisconsin
CityMERRILL
ZIP Code54452
Address2401 RIVER ST.
OrganizationCITY OF MERRILL- UTILITY MANAGER
Phone—

Population & Service

Population Served9,661
Service Connections4,096

Drinking Water Violations (211)

This water system has 211 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
Apr 1, 2004 Jun 30, 2004 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2004 Jun 30, 2004 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2004 Jun 30, 2004 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2004 Jun 30, 2004 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1994 Total Coliform Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1994 Total Coliform Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1994 Total Coliform Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 1994 Total Coliform Rule
Jan 1, 1993 Dec 31, 1993 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Toxaphene MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Glyphosate MR No Yes — 0.7 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Simazine MR No Yes — 0.004 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Picloram MR No Yes — 0.5 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Dinoseb MR No Yes — 0.007 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Aldicarb sulfone MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Aldicarb MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Atrazine MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 LASSO MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 2,4-D MR No Yes — 0.07 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Toxaphene MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Toxaphene MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Glyphosate MR No Yes — 0.7 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Glyphosate MR No Yes — 0.7 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 OXAMYL MR No Yes — 0.2 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Endrin MR No Yes — 0.002 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Endrin MR No Yes — 0.002 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Dalapon MR No Yes — 0.2 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Toxaphene MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Toxaphene MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Dalapon MR No Yes — 0.2 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Diquat MR No Yes — 0.02 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Diquat MR No Yes — 0.02 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Simazine MR No Yes — 0.004 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Dinoseb MR No Yes — 0.007 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Aldicarb MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Atrazine MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Atrazine MR No Yes — 0.003 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 LASSO MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 LASSO MR No Yes — — — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Jul 7, 1993 Synthetic Organic Chemicals
Jan 1, 1993 Dec 31, 1993 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Jul 7, 1993 Synthetic 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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