Is MERRILL MUNICIPAL WATER SUPPLY required to publish a Consumer Confidence Report?

Yes. MERRILL MUNICIPAL WATER SUPPLY 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 MUNICIPAL WATER SUPPLY’s next Consumer Confidence Report due?

MERRILL MUNICIPAL WATER SUPPLY’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.

MERRILL, IA · Plymouth County

MERRILL MUNICIPAL WATER SUPPLY Water System

Consumer Confidence Report status

MERRILL MUNICIPAL WATER SUPPLY 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 MUNICIPAL WATER SUPPLY.

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): IA7548072
System type: Community Water System
Population served: 717
Service connections: 360
Ownership: local government
Water source: groundwater (wells)

MERRILL MUNICIPAL WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 717 people from groundwater.

As of August 1, 2026, its federal record holds 28 entries between 1981 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 28, 27 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, volatile organic chemicals, and synthetic organic chemicals.

Violation history

Monitoring, Regular
—
Nitrate
April 1, 2021 – March 31, 2022
Resolved
Monitoring, Regular
—
CYANIDE
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Barium
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Cadmium
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Chromium
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Fluoride
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Mercury
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Thallium, Total
April 1, 2013 – March 31, 2022
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2002 – March 31, 2003
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Xylenes, Total
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
LASSO
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
2,4,5-TP
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Benzene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 1995 – March 31, 2000
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
October 1, 1987 – December 31, 1987
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1987 – June 30, 1990
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Selenium
October 1, 1981 – September 30, 1982
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2021 – March 31, 2022	Monitoring, Regular	Nitrate	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	CYANIDE	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Barium	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Cadmium	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Chromium	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Fluoride	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Mercury	—	Resolved
April 1, 2013 – March 31, 2022	Monitoring, Regular	Thallium, Total	—	Resolved
April 1, 2002 – March 31, 2003	Monitoring, Regular	Arsenic	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Pentachlorophenol	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Xylenes, Total	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	LASSO	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	2,4,5-TP	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Benzene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 1995 – March 31, 2000	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 1987 – December 31, 1987	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Resolved
July 1, 1987 – June 30, 1990	Monitoring, Regular	Nitrate	—	Resolved
October 1, 1981 – September 30, 1982	Maximum Contaminant Level Violation, Average	Selenium	Health-based	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

May 21, 2023State Public Notification received2 linked violations
May 21, 2023State Public Notification received3 linked violations
May 21, 2023State Public Notification received31 linked violations
April 24, 2023State Public Notification received5 linked violations
April 24, 2023State Public Notification received5 linked violations
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued4 linked violations
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Formal Notice of Violation issued2 linked violations
May 18, 2022State Formal Notice of Violation issued2 linked violations
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Public Notification requested2 linked violations
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued2 linked violations
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Formal Notice of Violation issued1 linked violation
April 27, 2022State Public Notification received1 linked violation
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Public Notification requested1 linked violation
April 18, 2022State Formal Notice of Violation issued1 linked violation
April 18, 2022State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved2 linked violations
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved1 linked violation
April 18, 2022State Compliance achieved2 linked violations
August 23, 2004State Public Notification requested3 linked violations
May 29, 2003State Compliance achieved3 linked violations
August 8, 2000State Public Notification received5 linked violations
August 8, 2000State Public Notification received6 linked violations
August 8, 2000State Public Notification received6 linked violations
August 8, 2000State Public Notification received25 linked violations
August 8, 2000State Public Notification received5 linked violations
June 19, 2000State Compliance achieved25 linked violations
June 19, 2000State Compliance achieved4 linked violations
June 19, 2000State Compliance achieved5 linked violations
June 19, 2000State Compliance achieved7 linked violations
June 19, 2000State Compliance achieved5 linked violations
June 19, 2000State Compliance achieved26 linked violations
May 17, 2000State Formal Notice of Violation issued3 linked violations
May 17, 2000State Formal Notice of Violation issued42 linked violations
May 17, 2000State Public Notification requested5 linked violations
May 17, 2000State Public Notification requested6 linked violations
May 17, 2000State Formal Notice of Violation issued8 linked violations
May 17, 2000State Formal Notice of Violation issued7 linked violations
May 17, 2000State Formal Notice of Violation issued5 linked violations
May 17, 2000State Formal Notice of Violation issued5 linked violations
May 17, 2000State Public Notification requested13 linked violations
May 17, 2000State Public Notification requested11 linked violations
May 17, 2000State Formal Notice of Violation issued6 linked violations
August 23, 1995State Public Notification received5 linked violations
October 16, 1990State Compliance achieved1 linked violation
October 16, 1990State Public Notification requested2 linked violations
October 16, 1990State Formal Notice of Violation issued2 linked violations
May 14, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 14, 1990State Compliance achieved1 linked violation
March 18, 1988State Compliance achieved2 linked violations
December 31, 1987State Formal Notice of Violation issued2 linked violations
September 4, 1987State Formal Notice of Violation issued3 linked violations

Common questions

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

MERRILL MUNICIPAL WATER SUPPLY

712-938-2514

MERRILL, IA 51038