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

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

PEOSTA 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.

PEOSTA, IA · Dubuque County

PEOSTA WATER SUPPLY Water System

Consumer Confidence Report status

PEOSTA 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 PEOSTA 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): IA3170001
System type: Community Water System
Population served: 2,278
Service connections: 1,671
Ownership: local government
Water source: groundwater (wells)

PEOSTA WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 2,278 people from groundwater.

As of August 1, 2026, its federal record holds 4 entries between 2002 and 2006, all of which EPA lists as closed. Nothing has been added since 2006.

All 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 Total Coliform Rules, and inorganic chemicals.

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2006 – March 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2005 – March 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Monitoring, Regular
—
Nitrate
December 1, 2002 – December 31, 2002
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2006 – March 31, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2003 – August 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

November 28, 2006State Public Notification requested2 linked violations
January 6, 2006State Public Notification received2 linked violations
November 23, 2005State Public Notification requested3 linked violations
November 23, 2005State Public Notification requested2 linked violations
June 21, 2005State Public Notification received6 linked violations
May 4, 2005State Formal Notice of Violation issued1 linked violation
June 15, 2004State Public Notification received2 linked violations
April 19, 2004State Public Notification requested1 linked violation
April 19, 2004State Formal Notice of Violation issued1 linked violation
October 23, 2003State Public Notification received1 linked violation
September 19, 2003State Formal Notice of Violation issued1 linked violation
September 19, 2003State Public Notification requested1 linked violation
January 23, 2003State Formal Notice of Violation issued1 linked violation
January 8, 2003State Compliance achieved1 linked violation
July 16, 2001State Compliance achieved5 linked violations
June 22, 2001State Public Notification received5 linked violations
May 17, 2001State Public Notification requested3 linked violations
June 21, 1999State Public Notification requested5 linked violations
February 23, 1996State Public Notification requested4 linked violations
February 21, 1996State Public Notification received2 linked violations
January 29, 1996State Formal Notice of Violation issued2 linked violations

Common questions

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

PEOSTA MUNICIPAL WATER SUPPLY

563-556-8755

PEOSTA, IA 52068-0065