OELWEIN, IA · Delaware County
DELAWARE MUNICIPAL WATER 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)
- IA2813019
- System type
- Community Water System
- Population served
- 142
- Service connections
- 42
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Gross Alpha, Excl. Radon and U
April 1, 2009 – March 31, 2018
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
April 1, 2008 – June 30, 2008
ResolvedMonitoring, Regular
—Barium
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Cadmium
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Chromium
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Fluoride
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Mercury
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Antimony, Total
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Thallium, Total
July 1, 1999 – June 30, 2008
ResolvedMonitoring, Regular
—Selenium
July 1, 1999 – June 30, 2008
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2009 – March 31, 2018 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Barium | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Cadmium | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Chromium | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Fluoride | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Mercury | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Antimony, Total | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Thallium, Total | — | Resolved |
| July 1, 1999 – June 30, 2008 | Monitoring, Regular | Selenium | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- May 14, 2019State Public Notification received3 linked violations
- June 25, 2018State Public Notification received3 linked violations
- May 17, 2018State Public Notification requested3 linked violations
- March 21, 2018State Formal Notice of Violation issued6 linked violations
- December 22, 1995State Public Notification requested1 linked violation
- December 22, 1995State Formal Notice of Violation issued1 linked violation
- August 14, 1989State Formal Notice of Violation issued2 linked violations
- October 3, 1988State Compliance achieved2 linked violations
- October 3, 1988State Compliance achieved1 linked violation
- September 15, 1988State Formal Notice of Violation issued2 linked violations
Contact
DELAWARE MUNICIPAL WATER SUPPLY
563-608-9699
OELWEIN, IA 50662