CORWITH, IA · Hancock County
CORWITH WATER SUPPLY Water System
Consumer Confidence Report status
CORWITH WATER SUPPLY must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CORWITH WATER SUPPLY.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
- IA4109077
- System type
- Community Water System
- Population served
- 266
- Service connections
- 159
- Ownership
- local government
- Water source
- groundwater (wells)
CORWITH WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 266 people from groundwater.
As of August 1, 2026, its federal record holds 5 entries between 1985 and 2018, all of which EPA lists as closed. Nothing has been added since 2018.
Of the 5, 3 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Radionuclides and Revised Rad Rule, the Consumer Confidence Rule, and the Groundwater Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2018 – August 27, 2018
ResolvedFailure to Consult with State
—Groundwater Rule
January 14, 2018 – March 22, 2018
ResolvedMonitoring, Regular
—Antimony, Total
April 1, 1994 – March 31, 1997
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1993 – June 30, 1997
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1985 – June 30, 1989
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2018 – August 27, 2018 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 14, 2018 – March 22, 2018 | Failure to Consult with State | Groundwater Rule | — | Resolved |
| April 1, 1994 – March 31, 1997 | Monitoring, Regular | Antimony, Total | — | Resolved |
| July 1, 1993 – June 30, 1997 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| July 1, 1985 – June 30, 1989 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- August 27, 2018State Compliance achieved2 linked violations
- February 8, 2018State Formal Notice of Violation issued2 linked violations
- January 12, 2018State Public Notification received2 linked violations
- November 7, 2017State Compliance achieved1 linked violation
- October 18, 2017State Formal Notice of Violation issued1 linked violation
- October 18, 2017State Public Notification requested2 linked violations
- June 25, 2014State Public Notification received7 linked violations
- November 20, 2013State Formal Notice of Violation issued2 linked violations
- September 24, 1997State Compliance achieved1 linked violation
- September 24, 1997State Compliance achieved1 linked violation
- August 1, 1997State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- August 1, 1997State Public Notification received2 linked violations
- August 1, 1997State Formal Notice of Violation issued1 linked violation
- August 1, 1997State Public Notification requested1 linked violation
- August 1, 1997State Public Notification requested2 linked violations
- July 24, 1997State Formal Notice of Violation issued2 linked violations
- July 24, 1997State Public Notification requested3 linked violations
- June 6, 1996State Compliance achieved7 linked violations
- June 6, 1996State Compliance achieved6 linked violations
- April 23, 1993State Formal Notice of Violation issued4 linked violations
- August 7, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- May 17, 1989State Compliance achieved2 linked violations
- April 3, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
Common questions
Is CORWITH WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. CORWITH WATER SUPPLY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CORWITH WATER SUPPLY’s next Consumer Confidence Report due?
- CORWITH WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CORWITH WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CORWITH WATER SUPPLY.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
CORWITH WATER SUPPLY
515-583-2342
CORWITH, IA 50430-5007