HAMILTON, IA · Marion County
HAMILTON WATER SUPPLY Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of October 28, 2003. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Marion County, IA.
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)
- IA6309001
- System type
- Community Water System
- Population served
- 144
- Service connections
- 53
- Ownership
- local government
- Water source
- groundwater (wells)
HAMILTON WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, formerly serving 144 people from groundwater.
EPA's federal records list this system as inactive in 2003; the record below is historical.
As of August 1, 2026, its federal record holds 4 entries in 1995, all of which EPA lists as closed. Nothing has been added since 1995.
Of the 4, 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 Total Coliform Rules.
Violation history
Monitoring, Repeat Major (TCR)
—Coliform (TCR)
September 1, 1995 – September 30, 1995
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 1995 – September 30, 1995
ResolvedMaximum Contaminant Level Violation, Acute (TCR)
Health-basedColiform (TCR)
August 1, 1995 – August 31, 1995
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 1995 – August 31, 1995
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| September 1, 1995 – September 30, 1995 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1995 – September 30, 1995 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| August 1, 1995 – August 31, 1995 | Maximum Contaminant Level Violation, Acute (TCR) | Coliform (TCR) | Health-based | Resolved |
| August 1, 1995 – August 31, 1995 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- September 26, 2002State Compliance achieved4 linked violations
- May 6, 1996State Compliance achieved1 linked violation
- December 28, 1995State Public Notification received5 linked violations
- November 22, 1995State Formal Notice of Violation issued1 linked violation
- October 10, 1995State Public Notification received1 linked violation
- September 12, 1995State Public Notification requested1 linked violation
- September 12, 1995State Public Notification requested3 linked violations
- September 12, 1995State Formal Notice of Violation issued1 linked violation
- May 1, 1995State Compliance achieved1 linked violation
- April 28, 1995State Public Notification requested4 linked violations
- April 28, 1995State Formal Notice of Violation issued1 linked violation
- February 18, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
Not on record
Phone not on record
HAMILTON, IA 50116