JEFFERSON, IA · Greene County
JEFFERSON WATER DEPARTMENT Water System
Consumer Confidence Report status
JEFFERSON WATER DEPARTMENT 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 JEFFERSON WATER DEPARTMENT.
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)
- IA3742004
- System type
- Community Water System
- Population served
- 4,182
- Service connections
- 2,080
- Ownership
- local government
- Water source
- groundwater (wells)
JEFFERSON WATER DEPARTMENT is one of 91 community water systems in Iowa in the 3,301 to 10,000 people size category, serving 4,182 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 1996 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.
All 2 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 Stage 2 Disinfectants and Disinfection Byproducts Rule and the Total Coliform Rules.
Violation history
Monitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
April 1, 2020 – April 30, 2020
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
June 1, 1996 – June 30, 1996
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2020 – April 30, 2020 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| June 1, 1996 – June 30, 1996 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- June 16, 2020State Public Notification requested3 linked violations
- May 13, 2020State Compliance achieved2 linked violations
- May 13, 2020State Compliance achieved2 linked violations
- July 18, 2019State Formal Notice of Violation issued3 linked violations
- January 26, 1998State Formal Notice of Violation issued2 linked violations
- October 10, 1995State Public Notification requested7 linked violations
Common questions
Is JEFFERSON WATER DEPARTMENT required to publish a Consumer Confidence Report?
- Yes. JEFFERSON WATER DEPARTMENT 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 JEFFERSON WATER DEPARTMENT’s next Consumer Confidence Report due?
- JEFFERSON WATER DEPARTMENT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does JEFFERSON WATER DEPARTMENT have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for JEFFERSON WATER DEPARTMENT.
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
JEFFERSON WATER DEPARTMENT
515-386-2611
JEFFERSON, IA 50129