IRWIN, IA · Shelby County
IRWIN MUNICIPAL SUPPLY 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)
- IA8340099
- System type
- Community Water System
- Population served
- 313
- Service connections
- 177
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
May 1, 2025 – May 31, 2025
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
October 1, 2024 – October 31, 2024
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
July 1, 2022 – July 31, 2022
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 1992 – June 30, 1992
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 1, 2025 – May 31, 2025 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| October 1, 2024 – October 31, 2024 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| July 1, 2022 – July 31, 2022 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| June 1, 1992 – June 30, 1992 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 10, 2025State Public Notification received1 linked violation
- June 18, 2025State Public Notification requested2 linked violations
- February 24, 2025State Public Notification received1 linked violation
- January 17, 2025State Public Notification requested6 linked violations
- January 17, 2025State Public Notification requested2 linked violations
- January 15, 2025State Compliance achieved25 linked violations
- November 26, 2024State Formal Notice of Violation issued25 linked violations
- February 28, 2024State Public Notification received1 linked violation
- January 17, 2024State Public Notification requested3 linked violations
- September 1, 2022State Public Notification received6 linked violations
- August 17, 2022State Public Notification requested1 linked violation
- August 16, 2022State Formal Notice of Violation issued1 linked violation
- February 17, 2000State Public Notification requested3 linked violations
- February 7, 2000State Compliance achieved2 linked violations
- October 6, 1995State Compliance achieved3 linked violations
- April 22, 1994State Public Notification requested2 linked violations
- September 18, 1992State Public Notification received1 linked violation
- September 11, 1992State Public Notification requested2 linked violations
- September 30, 1984Federal issued Formal Notice of Violation1 linked violation
Contact
IRWIN MUNICIPAL SUPPLY
712-782-3332
IRWIN, IA 51446