DUBUQUE, IA · Dubuque County
MAPLE HILLS Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of December 9, 1997. 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 Dubuque 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)
- IA3100301
- System type
- Community Water System
- Population served
- 230
- Service connections
- 89
- Ownership
- privately owned
- Water source
- groundwater (wells)
MAPLE HILLS is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, formerly serving 230 people from groundwater.
EPA's federal records list this system as inactive in 1997; the record below is historical.
As of August 1, 2026, its federal record holds 6 entries between 1986 and 1995, all of which EPA lists as closed. Nothing has been added since 1995.
All 6 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 inorganic chemicals and the Total Coliform Rules.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 1995 – March 31, 1995
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
April 1, 1991 – April 30, 1991
ResolvedMonitoring, Regular
—Arsenic
January 1, 1986 – December 31, 1988
ResolvedMonitoring, Regular
—Barium
January 1, 1986 – December 31, 1988
ResolvedMonitoring, Regular
—Fluoride
January 1, 1986 – December 31, 1988
ResolvedMonitoring, Regular
—Selenium
January 1, 1986 – December 31, 1988
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 1995 – March 31, 1995 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 1991 – April 30, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 1986 – December 31, 1988 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 1986 – December 31, 1988 | Monitoring, Regular | Barium | — | Resolved |
| January 1, 1986 – December 31, 1988 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 1986 – December 31, 1988 | Monitoring, Regular | Selenium | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- June 15, 1995State Compliance achieved1 linked violation
- May 22, 1995State Public Notification requested1 linked violation
- May 22, 1995State Formal Notice of Violation issued1 linked violation
- June 14, 1991State Formal Notice of Violation issued4 linked violations
- June 14, 1991State Public Notification requested5 linked violations
- February 19, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
- February 18, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
- February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
Not on record
319-583-6677
DUBUQUE, IA 52001