EFFIGY MOUNDS NATIONAL MONUMENT

Iowa — Transient Non-Community — PWSID: IA2258494

System Information

PWSID	IA2258494
System Name	EFFIGY MOUNDS NATIONAL MONUMENT
System Type	Transient Non-Community
Water Source	Ground Water
Activity Status	Active
Owner Type	Federal
EPA Region	07
Serves School	No
Wholesaler	No
First Reported	Feb 27, 1979
Last Reported	Dec 19, 2025

Location & Contact

State	Iowa
City	HARPERS FERRY
ZIP Code	52146
Address	ATTN FACILITY MANAGER
Organization	EFFIGY MOUNDS NATIONAL MONUMENT
Phone	563-873-3491

Population & Service

Population Served	328
Service Connections	5

Drinking Water Violations (42)

This water system has 42 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Jan 1, 2019	Jan 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jan 31, 2019	Revised Total Coliform Rule
Jan 1, 2019	Jan 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jan 31, 2019	Revised Total Coliform Rule
Jan 1, 2019	Jan 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jan 31, 2019	Revised Total Coliform Rule
Jan 1, 2019	Jan 31, 2019	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Jan 31, 2019	Revised Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Sep 30, 2002	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2002	Nitrate Rule
Oct 1, 2001	Sep 30, 2002	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2002	Nitrate Rule
Oct 1, 2001	Sep 30, 2002	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2002	Nitrate Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Oct 1, 2001	Dec 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Dec 31, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Jul 1, 2001	Sep 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 2001	Jun 30, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2001	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Apr 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
—	—		—	No	No	—	—	—	—	—	—

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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