WINTHROP WATER SUPPLY

Iowa — Community Water System — PWSID: IA1093031

System Information

PWSID	IA1093031
System Name	WINTHROP WATER SUPPLY
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	07
Serves School	No
Wholesaler	No
First Reported	Feb 27, 1979
Last Reported	Dec 19, 2025

Location & Contact

State	Iowa
City	WINTHROP
ZIP Code	50682
Address	ATTN WATER SUPERINTENDENT
Organization	WINTHROP WATER SUPPLY
Phone	563-920-4416

Population & Service

Population Served	840
Service Connections	380

Drinking Water Violations (104)

This water system has 104 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
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Oct 1, 1990	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 12, 1991	Lead and Copper Rule
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Mar 31, 1991	Arsenic Rule
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Fluoride	MR	No	Yes	—	4.0 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Mercury	MR	No	Yes	—	0.002 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals
Apr 1, 1988	Mar 31, 1991	Barium	MR	No	Yes	—	2 mg/L	—	Resolved	Mar 31, 1991	Inorganic Chemicals

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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