Is LAKE MILLS MUNICIPAL WATER DEPT-SOUTH required to publish a Consumer Confidence Report?

Yes. LAKE MILLS MUNICIPAL WATER DEPT-SOUTH 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 LAKE MILLS MUNICIPAL WATER DEPT-SOUTH’s next Consumer Confidence Report due?

LAKE MILLS MUNICIPAL WATER DEPT-SOUTH’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

LAKE MILLS, IA · Winnebago County

LAKE MILLS MUNICIPAL WATER DEPT-SOUTH Water System

Consumer Confidence Report status

LAKE MILLS MUNICIPAL WATER DEPT-SOUTH 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 LAKE MILLS MUNICIPAL WATER DEPT-SOUTH.

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 Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.

System facts

System ID (PWSID): IA9545044
System type: Community Water System
Population served: 2,158
Service connections: 1,116
Ownership: local government
Water source: groundwater (wells)

LAKE MILLS MUNICIPAL WATER DEPT-SOUTH is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 2,158 people from groundwater.

As of August 1, 2026, its federal record holds 3 entries between 1991 and 2001, all of which EPA lists as closed. Nothing has been added since 2001.

Of the 3, 2 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 inorganic chemicals, the Lead and Copper Rule, and the Total Coliform Rules.

Violation history

Monitoring, Regular
—
Nitrate
April 1, 2001 – March 31, 2002
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2000 – March 11, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1991 – July 31, 1991
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2001 – March 31, 2002	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2000 – March 11, 2004	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 1991 – July 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

March 11, 2004State Compliance achieved1 linked violation
March 11, 2004State no additional Formal Action needed1 linked violation
April 29, 2002State Compliance achieved2 linked violations
April 29, 2002State Compliance achieved1 linked violation
April 17, 2002State Formal Notice of Violation issued2 linked violations
April 17, 2002State Formal Notice of Violation issued2 linked violations
January 2, 2001State Public Notification requested1 linked violation
January 2, 2001State Formal Notice of Violation issued6 linked violations
December 20, 1991State Administrative/Compliance Order with penalty issued1 linked violation
December 20, 1991State Administrative/Compliance Order with penalty issued1 linked violation
August 27, 1991State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 27, 1991State Public Notification received1 linked violation
August 27, 1991State Public Notification received1 linked violation
August 8, 1991State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 8, 1991State Public Notification requested2 linked violations
August 8, 1991State Formal Notice of Violation issued1 linked violation
August 7, 1991State Compliance achieved1 linked violation
August 7, 1991State Compliance achieved1 linked violation
July 17, 1991State Public Notification requested2 linked violations
January 21, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Common questions

Is LAKE MILLS MUNICIPAL WATER DEPT-SOUTH required to publish a Consumer Confidence Report?: Yes. LAKE MILLS MUNICIPAL WATER DEPT-SOUTH 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 LAKE MILLS MUNICIPAL WATER DEPT-SOUTH’s next Consumer Confidence Report due?: LAKE MILLS MUNICIPAL WATER DEPT-SOUTH’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAKE MILLS MUNICIPAL WATER DEPT-SOUTH have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for LAKE MILLS MUNICIPAL WATER DEPT-SOUTH.
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

LAKE MILLS MUNI WD SOUTH

641-590-2784

LAKE MILLS, IA 50450