ONAWA, IA · Monona County
ONAWA MUNICIPAL WATER PLANT 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)
- IA6739095
- System type
- Community Water System
- Population served
- 2,906
- Service connections
- 1,350
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrate
April 1, 1988 – March 31, 1991
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 1988 – March 31, 1991 | Monitoring, Regular | Nitrate | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- May 6, 1991State Compliance achieved1 linked violation
Contact
ONAWA MUNICIPAL WATER PLANT
712-420-5313
ONAWA, IA 51040