Is CRESTON WATER SUPPLY required to publish a Consumer Confidence Report?

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

CRESTON 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.

CRESTON, IA · Union County

CRESTON WATER SUPPLY Water System

Consumer Confidence Report status

CRESTON 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 CRESTON 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): IA8816089
System type: Community Water System
Population served: 7,536
Service connections: 3,300
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

CRESTON WATER SUPPLY is one of 91 community water systems in Iowa in the 3,301 to 10,000 people size category, serving 7,536 people from surface water.

As of August 1, 2026, its federal record holds 7 entries between 2000 and 2017, all of which EPA lists as closed. Nothing has been added since 2017.

Of the 7, 4 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 Stage 1 Disinfectants and Disinfection Byproducts Rule, the Surface Water Treatment Rules, and synthetic organic chemicals.

Violation history

Treatment Techniques
Health-based
Epichlorohydrin
August 1, 2017 – August 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
March 1, 2016 – March 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2016 – March 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2011 – November 10, 2011
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2008 – December 31, 2008
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2000 – December 31, 2000
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
August 1, 2017 – August 31, 2017	Treatment Techniques	Epichlorohydrin	Health-based	Resolved
March 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
January 1, 2016 – March 31, 2016	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
October 1, 2011 – November 10, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
December 1, 2008 – December 31, 2008	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
December 1, 2008 – December 31, 2008	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

May 5, 2020State Compliance achieved1 linked violation
October 29, 2019State Administrative/Compliance Order without penalty issued4 linked violations
September 13, 2019State Public Notification received1 linked violation
August 20, 2019State Public Notification requested2 linked violations
April 29, 2019State Public Notification received2 linked violations
August 10, 2018State Compliance achieved2 linked violations
November 2, 2017State Public Notification received2 linked violations
September 30, 2017State Compliance achieved2 linked violations
September 25, 2017State Public Notification received4 linked violations
August 28, 2017State Public Notification requested7 linked violations
January 4, 2017State Public Notification received1 linked violation
January 4, 2017State Public Notification received2 linked violations
May 17, 2016State Public Notification requested3 linked violations
April 11, 2016State Compliance achieved4 linked violations
June 20, 2014State Public Notification received3 linked violations
July 19, 2013State Public Notification requested3 linked violations
March 9, 2012State Public Notification requested3 linked violations
November 10, 2011State Compliance achieved2 linked violations
October 25, 2011State Public Notification requested2 linked violations
October 25, 2011State Formal Notice of Violation issued2 linked violations
October 20, 2011State Compliance achieved3 linked violations
February 28, 2006State Compliance achieved1 linked violation
April 10, 2001State Public Notification requested2 linked violations
March 20, 2001State Compliance achieved1 linked violation
April 6, 1993State Compliance achieved4 linked violations
April 6, 1993State Compliance achieved1 linked violation
February 19, 1993State Formal Notice of Violation issued1 linked violation
November 13, 1992State Formal Notice of Violation issued1 linked violation
April 17, 1992State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
April 17, 1992State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 17, 1992State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 18, 1991State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 18, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Common questions

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

CRESTON WATER SUPPLY

641-782-5817

CRESTON, IA 50801