Public Water Partners

MERRILL, WI · Lincoln County

MERRILL WATERWORKS Water System

Consumer Confidence Report status

MERRILL WATERWORKS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for MERRILL WATERWORKS.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.

System facts

System ID (PWSID)
WI7350123
System type
Community Water System
Population served
9,661
Service connections
4,096
Ownership
local government
Water source
groundwater (wells)

MERRILL WATERWORKS is one of 102 community water systems in Wisconsin in the 3,301 to 10,000 people size category, serving 9,661 people from groundwater.

As of August 1, 2026, its federal record holds 135 entries between 1993 and 1994, all of which EPA lists as closed. Nothing has been added since 1994.

Of the 135, 134 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals and the Total Coliform Rules.

Violation history

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    August 1, 1994 – August 31, 1994

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 1993 – July 7, 1993

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 1993 – July 7, 1993

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is MERRILL WATERWORKS required to publish a Consumer Confidence Report?

Yes. MERRILL WATERWORKS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MERRILL WATERWORKS’s next Consumer Confidence Report due?

MERRILL WATERWORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does MERRILL WATERWORKS have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for MERRILL WATERWORKS.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

CITY OF MERRILL- UTILITY MANAGER

Phone not on record

MERRILL, WI 54452