OSKALOOSA, IA · Mahaska County
MAHASKA RURAL WATER SYSTEM, INC. 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)
- IA6273901
- System type
- Community Water System
- Population served
- 9,818
- Service connections
- 3,927
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Treatment Technique, Level 1 Assessment (RTCR)
Health-basedRevised Total Coliform Rule
April 1, 2016 – May 16, 2017
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
December 1, 2002 – December 31, 2002
ResolvedMonitoring, Regular
—Combined Radium (-226 and -228)
September 30, 1980 – September 29, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
September 30, 1980 – September 29, 1983
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2016 – May 16, 2017 | Treatment Technique, Level 1 Assessment (RTCR) | Revised Total Coliform Rule | Health-based | Resolved |
| December 1, 2002 – December 31, 2002 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| September 30, 1980 – September 29, 1983 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
| September 30, 1980 – September 29, 1983 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- February 13, 2018State Public Notification requested5 linked violations
- April 9, 2017State Public Notification received2 linked violations
- April 22, 2016State Violation/Reminder Notice3 linked violations
- December 4, 2002State Public Notification requested2 linked violations
- December 4, 2002State Formal Notice of Violation issued3 linked violations
- January 29, 1996State Public Notification requested2 linked violations
- February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Contact
MAHASKA RURAL WATER SYSTEM INC
641-673-8851
OSKALOOSA, IA 52577