GRISWOLD WATER SUPPLY

Iowa — Community Water System — PWSID: IA1528010

System Information

PWSID	IA1528010
System Name	GRISWOLD 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	GRISWOLD
ZIP Code	51535
Address	ATTN NICK KINSER
Organization	GRISWOLD WATER SUPPLY
Phone	712-778-2615

Population & Service

Population Served	1,008
Service Connections	543

Drinking Water Violations (61)

This water system has 61 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
Jul 1, 2025	Jul 31, 2025	TTHM	MR	No	Yes	—	0.080 mg/L	—	Archived	Jul 31, 2025	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025	Jul 31, 2025	TTHM	MR	No	Yes	—	0.080 mg/L	—	Archived	Jul 31, 2025	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025	Jul 31, 2025	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Archived	Jul 31, 2025	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025	Jul 31, 2025	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Archived	Jul 31, 2025	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	TTHM	MR	No	Yes	—	0.080 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	TTHM	MR	No	Yes	—	0.080 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	TTHM	MR	No	Yes	—	0.080 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024	Jul 31, 2024	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Archived	Jul 31, 2024	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005	Aug 31, 2007	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Aug 31, 2007	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005	Aug 31, 2007	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Aug 31, 2007	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005	Aug 31, 2007	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Aug 31, 2007	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005	Aug 31, 2007	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Aug 31, 2007	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005	Aug 31, 2007	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Aug 31, 2007	Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 1998	May 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1998	Total Coliform Rule
May 1, 1998	May 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1998	Total Coliform Rule
May 1, 1998	May 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 1998	Total Coliform Rule
Apr 1, 1998	Apr 30, 1998	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Apr 30, 1998	Nitrate Rule
Apr 1, 1998	Apr 30, 1998	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Apr 30, 1998	Nitrate Rule
Apr 1, 1998	Apr 30, 1998	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Apr 30, 1998	Nitrate Rule
Apr 1, 1998	Apr 30, 1998	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Apr 30, 1998	Nitrate Rule
Oct 1, 1995	Dec 31, 1995	Nitrate	MCL	Yes	No	10.9	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Oct 1, 1995	Dec 31, 1995	Nitrate	MCL	Yes	No	10.9	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Oct 1, 1995	Dec 31, 1995	Nitrate	MCL	Yes	No	10.9	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Oct 1, 1995	Dec 31, 1995	Nitrate	MCL	Yes	No	10.9	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Oct 1, 1992	Dec 31, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Apr 1, 1992	Jun 30, 1992	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 1992	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Archived	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Archived	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1988	Nitrate Rule
Oct 1, 1988	Dec 31, 1988	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1988	Nitrate 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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