DUBUQUE, IA · Dubuque County

COLONIAL/GM/RC Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of January 28, 2000. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Dubuque County, IA.

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): IA3102301
System type: Community Water System
Population served: 462
Service connections: 119
Ownership: privately owned
Water source: groundwater (wells)

COLONIAL/GM/RC is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, formerly serving 462 people from groundwater.

EPA's federal records list this system as inactive in 2000; the record below is historical.

As of August 1, 2026, its federal record holds 2 entries between 1982 and 1991, all of which EPA lists as closed. Nothing has been added since 1991.

All 2 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 Total Coliform Rules and the Radionuclides and Revised Rad Rule.

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1991 – April 30, 1991
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1982 – June 30, 1986
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 1991 – April 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1982 – June 30, 1986	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

March 9, 1993State Compliance achieved3 linked violations
March 9, 1993State Compliance achieved1 linked violation
March 9, 1993State Compliance achieved1 linked violation
February 19, 1993State Formal Notice of Violation issued15 linked violations
February 19, 1993State Formal Notice of Violation issued3 linked violations
February 19, 1993State Formal Notice of Violation issued9 linked violations
February 19, 1993State Public Notification requested13 linked violations
February 19, 1993State Formal Notice of Violation issued2 linked violations
February 19, 1993State Formal Notice of Violation issued16 linked violations
February 19, 1993State Public Notification requested1 linked violation
February 19, 1993State Formal Notice of Violation issued1 linked violation
June 14, 1991State Formal Notice of Violation issued3 linked violations
June 14, 1991State Public Notification requested1 linked violation
June 14, 1991State Public Notification requested5 linked violations
May 29, 1991State Compliance achieved2 linked violations
April 15, 1987State Compliance achieved1 linked violation
April 1, 1987State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 1, 1987State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 1, 1987State Intentional no-actiongeneral compliance action — not tied to a specific violation on record
December 2, 1986State Compliance achieved3 linked violations
July 1, 1986State Formal Notice of Violation issued1 linked violation
July 1, 1986State Public Notification requested1 linked violation

Last known contact on file (system is inactive)

Not on record

Phone not on record

DUBUQUE, IA 52001