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

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

OSCEOLA 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.

OSCEOLA, IA · Clarke County

OSCEOLA WATER WORKS Water System

Consumer Confidence Report status

OSCEOLA 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 1 item for OSCEOLA WATER WORKS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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): IA2038038
System type: Community Water System
Population served: 5,503
Service connections: 2,288
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

OSCEOLA WATER WORKS is one of 91 community water systems in Iowa in the 3,301 to 10,000 people size category, serving 5,503 people from surface water.

As of August 1, 2026, its federal record holds 13 entries between 1989 and 2024, of which 1 remains open; none are health-based.

Of the 13, 8 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 the Surface Water Treatment Rules, volatile organic chemicals, and the Public Notice Rule and Revised PN Rule.

Violation history

Treatment Technique (SWTR and GWR)
Health-based
Long Term 2 Enhanced Surface Water Treatment Rule
September 1, 2024 – September 30, 2024
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Long Term 2 Enhanced Surface Water Treatment Rule
March 1, 2024 – March 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Long Term 2 Enhanced Surface Water Treatment Rule
February 1, 2024 – February 29, 2024
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
November 14, 2020
Unaddressed
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2020 – August 31, 2020
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2018 – March 31, 2018
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1993 – August 31, 1993
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 1992 – June 30, 1992
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 1991 – September 30, 1991
Resolved
Monitoring, Regular
—
LASSO
April 1, 1991 – June 30, 1991
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1991 – March 31, 1991
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1989 – June 30, 1993
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2024 – September 30, 2024	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Health-based	Resolved
March 1, 2024 – March 31, 2024	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Health-based	Resolved
February 1, 2024 – February 29, 2024	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	—	Archived
November 14, 2020	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
August 1, 2020 – August 31, 2020	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 2018 – March 31, 2018	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
August 1, 1993 – August 31, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1992 – June 30, 1992	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 1991 – September 30, 1991	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 1991 – June 30, 1991	Monitoring, Regular	LASSO	—	Resolved
January 1, 1991 – March 31, 1991	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 1989 – June 30, 1993	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yet

Enforcement actions

March 12, 2024State Public Notification received2 linked violations
March 1, 2024State Formal Notice of Violation issued2 linked violations
July 14, 2022State Formal Notice of Violation issued2 linked violations
July 14, 2022State Intentional no-action3 linked violations
November 1, 2020State Compliance achieved2 linked violations
November 1, 2020State Compliance achieved2 linked violations
September 4, 2020State Public Notification received3 linked violations
March 1, 2019State Compliance achieved3 linked violations
March 22, 2018State Formal Notice of Violation issued3 linked violations
May 25, 2007State Public Notification received1 linked violation
January 23, 2007State Formal Notice of Violation issued5 linked violations
January 26, 1998State Public Notification requested4 linked violations
January 22, 1998State Compliance achieved1 linked violation
January 22, 1998State Compliance achieved3 linked violations
January 12, 1998State Compliance achieved7 linked violations
December 15, 1997State Public Notification received1 linked violation
October 20, 1997State Formal Notice of Violation issued1 linked violation
October 20, 1997State Public Notification requested1 linked violation
February 24, 1997State Formal Notice of Violation issued5 linked violations
November 14, 1996State Public Notification received28 linked violations
October 28, 1996State Formal Notice of Violation issued11 linked violations
June 5, 1996State Compliance achieved1 linked violation
June 5, 1996State Compliance achieved1 linked violation
June 5, 1996State Compliance achieved2 linked violations
November 28, 1994State Formal Notice of Violation issued29 linked violations
November 28, 1994State Public Notification requested6 linked violations
September 30, 1994State Public Notification requested3 linked violations
September 30, 1994State Formal Notice of Violation issued2 linked violations
September 30, 1994State Public Notification requested1 linked violation
September 30, 1994State Formal Notice of Violation issued3 linked violations
September 30, 1994State Formal Notice of Violation issued1 linked violation
September 30, 1994State Public Notification requested2 linked violations
September 8, 1994State Formal Notice of Violation issued2 linked violations
September 8, 1994State Public Notification requested4 linked violations
February 18, 1994State Formal Notice of Violation issued5 linked violations
October 15, 1993State Formal Notice of Violation issued6 linked violations
May 14, 1993State Public Notification requested3 linked violations
May 14, 1993State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
October 21, 1991State Bilateral Compliance Agreement signedgeneral compliance action — not tied to a specific violation on record
October 21, 1991State Bilateral Compliance Agreement signed1 linked violation
October 21, 1991State Bilateral Compliance Agreement signedgeneral compliance action — not tied to a specific violation on record
October 21, 1991State Bilateral Compliance Agreement signed4 linked violations
October 21, 1991State Bilateral Compliance Agreement signedgeneral compliance action — not tied to a specific violation on record
August 5, 1991State Compliance achieved1 linked violation
October 16, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 6, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 25, 1989State Formal Notice of Violation issued1 linked violation

Common questions

Is OSCEOLA WATER WORKS required to publish a Consumer Confidence Report?: Yes. OSCEOLA 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 OSCEOLA WATER WORKS’s next Consumer Confidence Report due?: OSCEOLA WATER WORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OSCEOLA WATER WORKS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for OSCEOLA WATER WORKS that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

OSCEOLA WATER WORKS

641-342-1435

OSCEOLA, IA 50213