Is OTTUMWA WATER WORKS required to publish a Consumer Confidence Report?

Yes. OTTUMWA WATER WORKS 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 OTTUMWA WATER WORKS’s next Consumer Confidence Report due?

OTTUMWA WATER WORKS’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.

OTTUMWA, IA · Wapello County

OTTUMWA WATER WORKS Water System

Consumer Confidence Report status

OTTUMWA WATER WORKS 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 OTTUMWA WATER WORKS.

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): IA9083012
System type: Community Water System
Population served: 25,529
Service connections: 9,800
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

OTTUMWA WATER WORKS is one of 50 community water systems in Iowa in the 10,001 to 100,000 people size category, serving 25,529 people from surface water.

As of August 1, 2026, its federal record holds 16 entries between 1982 and 2024, all of which EPA lists as closed.

All 16 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2024 – January 31, 2024
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2022 – April 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2022 – April 30, 2022
Resolved
Monitoring, Regular
—
Barium
April 1, 1990 – March 31, 1991
Resolved
Monitoring, Regular
—
Cadmium
April 1, 1990 – March 31, 1991
Resolved
Monitoring, Regular
—
Chromium
April 1, 1990 – March 31, 1991
Resolved
Monitoring, Regular
—
Mercury
April 1, 1990 – March 31, 1991
Resolved
Monitoring, Regular
—
Arsenic
April 1, 1990 – March 31, 1991
Resolved
Monitoring, Regular
—
Cadmium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Barium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Mercury
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Fluoride
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Chromium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Selenium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Nitrate
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Arsenic
June 25, 1982 – June 24, 1983
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
January 1, 2024 – January 31, 2024	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2022 – April 30, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2022 – April 30, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 1990 – March 31, 1991	Monitoring, Regular	Barium	—	Resolved
April 1, 1990 – March 31, 1991	Monitoring, Regular	Cadmium	—	Resolved
April 1, 1990 – March 31, 1991	Monitoring, Regular	Chromium	—	Resolved
April 1, 1990 – March 31, 1991	Monitoring, Regular	Mercury	—	Resolved
April 1, 1990 – March 31, 1991	Monitoring, Regular	Arsenic	—	Resolved
June 25, 1982 – June 24, 1983	Monitoring, Regular	Cadmium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Barium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Mercury	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Fluoride	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Chromium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Selenium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Nitrate	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Arsenic	—	Archived

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

Enforcement actions

February 26, 2024State Public Notification requested2 linked violations
June 28, 2023State Public Notification received3 linked violations
June 28, 2023State Public Notification received3 linked violations
July 14, 2022State Public Notification requested1 linked violation
July 14, 2022State Public Notification requested3 linked violations
September 16, 2016State Compliance achieved4 linked violations
September 10, 2015State Formal Notice of Violation issued3 linked violations
September 22, 2014State Public Notification received7 linked violations
July 17, 2003State Compliance achieved5 linked violations
October 14, 1994State Public Notification received1 linked violation
January 21, 1992State Compliance achieved2 linked violations
January 21, 1992State Compliance achieved6 linked violations
February 5, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Common questions

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

OTTUMWA WATER WORKS

641-684-4606

OTTUMWA, IA 52501