DENVER, IA · Bremer County
DENVER WATER SUPPLY Water System
Consumer Confidence Report status
DENVER 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 DENVER 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)
- IA0915030
- System type
- Community Water System
- Population served
- 1,919
- Service connections
- 867
- Ownership
- local government
- Water source
- groundwater (wells)
DENVER WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 1,919 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1999 and 2001, all of which EPA lists as closed. Nothing has been added since 2001.
Of the 2, 1 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 and the Total Coliform Rules.
Violation history
Monitoring, Regular
—Combined Radium (-226 and -228)
April 1, 2001 – March 31, 2010
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
June 1, 1999 – June 30, 1999
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2001 – March 31, 2010 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| June 1, 1999 – June 30, 1999 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- February 11, 2000State Bilateral Compliance Agreement signed4 linked violations
- February 11, 2000State Bilateral Compliance Agreement signed4 linked violations
- July 14, 1999State Public Notification received3 linked violations
- July 14, 1999State Public Notification received4 linked violations
- July 2, 1999State Administrative/Compliance Order without penalty issued4 linked violations
- July 2, 1999State Administrative/Compliance Order without penalty issued5 linked violations
- June 21, 1999State Violation/Reminder Notice3 linked violations
- February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Common questions
Is DENVER WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. DENVER 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 DENVER WATER SUPPLY’s next Consumer Confidence Report due?
- DENVER WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DENVER WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for DENVER 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
DENVER, CITY OF
319-984-5642
DENVER, IA 50622