OSSIAN, IA · Winneshiek County

CASTALIA WATER WORKS Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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): IA9620082
System type: Community Water System
Population served: 145
Service connections: 86
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1991 – October 31, 1991
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1987 – June 30, 1991
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 1991 – October 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1987 – June 30, 1991	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 1, 1995State Compliance achieved1 linked violation
September 29, 1994State Public Notification received2 linked violations
September 16, 1994State Public Notification requested3 linked violations
September 16, 1994State Formal Notice of Violation issued3 linked violations
September 13, 1994State Formal Notice of Violation issued4 linked violations
April 15, 1992State Public Notification requested2 linked violations
April 15, 1992State Formal Notice of Violation issued3 linked violations
April 15, 1992State Formal Notice of Violation issued3 linked violations
August 30, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 30, 1988State Compliance achieved1 linked violation
August 30, 1988State Formal Notice of Violation issued1 linked violation
August 30, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 5, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 1, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Contact

CASTALIA WATER WORKS

563-419-4631

OSSIAN, IA 52161