Is MAPLETON MUNICIPAL WATER PLANT required to publish a Consumer Confidence Report?

Yes. MAPLETON MUNICIPAL WATER PLANT 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 MAPLETON MUNICIPAL WATER PLANT’s next Consumer Confidence Report due?

MAPLETON MUNICIPAL WATER PLANT’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.

MAPLETON, IA · Monona County

MAPLETON MUNICIPAL WATER PLANT Water System

Consumer Confidence Report status

MAPLETON MUNICIPAL WATER PLANT 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 MAPLETON MUNICIPAL WATER PLANT.

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): IA6727028
System type: Community Water System
Population served: 1,124
Service connections: 629
Ownership: local government
Water source: groundwater (wells)

MAPLETON MUNICIPAL WATER PLANT is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 1,124 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1990 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 9, 7 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 Total Coliform Rules, and the Lead and Copper Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 1, 2023 – January 30, 2024
Resolved
Monitoring, Regular
—
Nitrate
February 1, 2016 – February 29, 2016
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2015 – November 30, 2015
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 2000 – August 31, 2000
Resolved
Monitoring, Regular
—
Antimony, Total
October 1, 1992 – September 30, 1995
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
February 1, 1992 – February 29, 1992
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
January 1, 1991 – March 31, 1991
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
July 1, 1990 – September 30, 1990
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1990 – June 30, 1990
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2023 – January 30, 2024	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
February 1, 2016 – February 29, 2016	Monitoring, Regular	Nitrate	—	Resolved
November 1, 2015 – November 30, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 2000 – August 31, 2000	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
October 1, 1992 – September 30, 1995	Monitoring, Regular	Antimony, Total	—	Resolved
February 1, 1992 – February 29, 1992	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1991 – March 31, 1991	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
July 1, 1990 – September 30, 1990	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
April 1, 1990 – June 30, 1990	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 30, 2024State Compliance achieved2 linked violations
January 18, 2024State Formal Notice of Violation issued4 linked violations
March 25, 2016State Public Notification received6 linked violations
March 17, 2016State Public Notification requested2 linked violations
December 15, 2015State Formal Notice of Violation issued24 linked violations
December 15, 2015State Public Notification requested1 linked violation
September 1, 2000State Public Notification received5 linked violations
January 30, 1998State Public Notification received4 linked violations
January 12, 1998State Formal Notice of Violation issued1 linked violation
January 12, 1998State Public Notification requested1 linked violation
September 3, 1997State Compliance achieved3 linked violations
September 3, 1997State Compliance achieved3 linked violations
September 3, 1996State Public Notification requested3 linked violations
June 4, 1996State Compliance achieved11 linked violations
June 4, 1996State Compliance achieved6 linked violations
March 25, 1996State Public Notification requested3 linked violations
March 25, 1995State Bilateral Compliance Agreement signed2 linked violations
March 22, 1995State Bilateral Compliance Agreement signed8 linked violations
March 22, 1995State Bilateral Compliance Agreement signed8 linked violations
November 15, 1994State Formal Notice of Violation issued3 linked violations
November 15, 1994State Public Notification requested4 linked violations
October 6, 1994State Public Notification received4 linked violations
September 20, 1994State Formal Notice of Violation issued5 linked violations
September 20, 1994State Public Notification requested69 linked violations
March 1, 1994State Compliance achieved3 linked violations
June 21, 1993State Formal Notice of Violation issued16 linked violations
June 21, 1993State Public Notification requested9 linked violations
May 13, 1992State Compliance achieved1 linked violation
May 13, 1992State Bilateral Compliance Agreement signed5 linked violations
May 13, 1992State Bilateral Compliance Agreement signed3 linked violations
February 28, 1992State Administrative/Compliance Order without penalty issued1 linked violation
February 27, 1992State Formal Notice of Violation issued1 linked violation
February 27, 1992State Public Notification requested2 linked violations
February 27, 1992State Public Notification requested2 linked violations
January 29, 1992State Public Notification received3 linked violations
January 10, 1992State Public Notification requested2 linked violations
January 10, 1992State Formal Notice of Violation issued2 linked violations
January 10, 1992State Formal Notice of Violation issued3 linked violations
December 1, 1989State Formal Notice of Violation issued3 linked violations
February 19, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Common questions

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

MAPLETON MUNICIPAL WATER PLANT

712-881-1351

MAPLETON, IA 51034