WASHINGTON, IA · Washington County

HIDDEN VALLEY MOBILE HOME PARK Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 2, 2005. 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 Washington 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): IA9200600
System type: Community Water System
Population served: 46
Service connections: 20
Ownership: privately owned
Water source: groundwater (wells)

HIDDEN VALLEY MOBILE HOME PARK is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, formerly serving 46 people from groundwater.

EPA's federal records list this system as inactive in 2005; the record below is historical.

As of August 1, 2026, its federal record holds 7 entries between 1980 and 2003, all of which EPA lists as closed. Nothing has been added since 2003.

Of the 7, 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 the Total Coliform Rules, the Radionuclides and Revised Rad Rule, and volatile organic chemicals.

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2003 – July 31, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1997 – December 31, 1997
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1997 – January 31, 1997
Resolved
Monitoring, Regular
—
Antimony, Total
July 1, 1993 – June 30, 1996
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1992 – June 30, 1996
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1990 – October 31, 1990
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
September 30, 1980 – September 29, 1983
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2003 – July 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 1997 – December 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – January 31, 1997	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 1993 – June 30, 1996	Monitoring, Regular	Antimony, Total	—	Resolved
July 1, 1992 – June 30, 1996	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 1990 – October 31, 1990	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 30, 1980 – September 29, 1983	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 25, 2005State Public Notification requested3 linked violations
September 15, 2004State Formal Notice of Violation issued3 linked violations
August 27, 2003State Formal Notice of Violation issued8 linked violations
August 27, 2003State Public Notification requested6 linked violations
August 4, 2003State Compliance achieved7 linked violations
March 22, 2000State Public Notification received7 linked violations
November 3, 1998State Compliance achieved1 linked violation
November 3, 1998State Compliance achieved1 linked violation
November 3, 1998State Compliance achieved1 linked violation
November 3, 1998State Compliance achieved3 linked violations
June 15, 1998State Public Notification requested2 linked violations
June 15, 1998State Formal Notice of Violation issued4 linked violations
May 18, 1998State Formal Notice of Violation issued10 linked violations
May 18, 1998State Public Notification requested9 linked violations
May 15, 1998State Formal Notice of Violation issued4 linked violations
May 15, 1998State Formal Notice of Violation issued2 linked violations
May 15, 1998State Formal Notice of Violation issued2 linked violations
May 15, 1998State Formal Notice of Violation issued1 linked violation
May 15, 1998State Public Notification requested2 linked violations
April 7, 1998State Compliance achieved2 linked violations
April 7, 1998State Compliance achieved2 linked violations
April 7, 1998State Compliance achieved1 linked violation
January 26, 1998State Formal Notice of Violation issued4 linked violations
October 20, 1997State Public Notification requested1 linked violation
October 20, 1997State Formal Notice of Violation issued1 linked violation
September 22, 1997State Formal Notice of Violation issued1 linked violation
September 22, 1997State Public Notification requested1 linked violation
May 14, 1997State Public Notification requested7 linked violations
May 14, 1997State Formal Notice of Violation issued1 linked violation
May 14, 1997State Public Notification requested2 linked violations
May 14, 1997State Public Notification requested1 linked violation
April 26, 1996State Formal Notice of Violation issued2 linked violations
April 26, 1996State Public Notification requested2 linked violations
October 16, 1995State Compliance achieved3 linked violations
July 3, 1995State Compliance achieved3 linked violations
May 20, 1994State Formal Notice of Violation issued1 linked violation
February 2, 1994State Compliance achieved3 linked violations
June 3, 1992State Public Notification requested1 linked violation
June 3, 1992State Public Notification requested2 linked violations
June 3, 1992State Formal Notice of Violation issued1 linked violation
April 10, 1991State Administrative/Compliance Order without penalty issued4 linked violations
April 10, 1991State Administrative/Compliance Order without penalty issued1 linked violation
April 10, 1991State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
February 1, 1991State Public Notification received1 linked violation
January 15, 1991State Formal Notice of Violation issued1 linked violation
December 18, 1990State Compliance achieved1 linked violation
September 24, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 24, 1990State Compliance achieved2 linked violations
November 6, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 3, 1989State Public Notification requested1 linked violation
October 10, 1989State Compliance achieved1 linked violation
February 19, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Last known contact on file (system is inactive)

HIDDEN VALLEY MHP

319-461-0277

WASHINGTON, IA 52353