MAPLETON MUNICIPAL WATER PLANT

Iowa — Community Water System — PWSID: IA6727028

System Information

PWSID	IA6727028
System Name	MAPLETON MUNICIPAL WATER PLANT
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	MAPLETON
ZIP Code	51034
Address	ATTN MARSHALL GOSLAR WATER SUPT
Organization	MAPLETON MUNICIPAL WATER PLANT
Phone	712-881-1351

Population & Service

Population Served	1,124
Service Connections	629

Drinking Water Violations (127)

This water system has 127 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
Dec 1, 2023	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 30, 2024	Lead and Copper Rule
Dec 1, 2023	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 30, 2024	Lead and Copper Rule
Feb 1, 2016	Feb 29, 2016	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Feb 29, 2016	Nitrate Rule
Feb 1, 2016	Feb 29, 2016	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Feb 29, 2016	Nitrate Rule
Feb 1, 2016	Feb 29, 2016	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Feb 29, 2016	Nitrate Rule
Feb 1, 2016	Feb 29, 2016	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Feb 29, 2016	Nitrate Rule
Nov 1, 2015	Nov 30, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2015	Total Coliform Rule
Nov 1, 2015	Nov 30, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2015	Total Coliform Rule
Nov 1, 2015	Nov 30, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2015	Total Coliform Rule
Nov 1, 2015	Nov 30, 2015	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2015	Total Coliform Rule
Sep 1, 2000	Sep 30, 2000	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Sep 30, 2000	Nitrate Rule
Sep 1, 2000	Sep 30, 2000	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Sep 30, 2000	Nitrate Rule
Sep 1, 2000	Sep 30, 2000	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Sep 30, 2000	Nitrate Rule
Sep 1, 2000	Sep 30, 2000	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Sep 30, 2000	Nitrate Rule
Aug 1, 2000	Aug 31, 2000	Nitrate	MCL	Yes	No	15	10 mg/L	—	Resolved	Aug 31, 2000	Nitrate Rule
Aug 1, 2000	Aug 31, 2000	Nitrate	MCL	Yes	No	15	10 mg/L	—	Resolved	Aug 31, 2000	Nitrate Rule
Aug 1, 2000	Aug 31, 2000	Nitrate	MCL	Yes	No	15	10 mg/L	—	Resolved	Aug 31, 2000	Nitrate Rule
Aug 1, 2000	Aug 31, 2000	Nitrate	MCL	Yes	No	15	10 mg/L	—	Resolved	Aug 31, 2000	Nitrate Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 1998	Total Coliform Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 1998	Total Coliform Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 1998	Total Coliform Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jan 31, 1998	Total Coliform Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Jan 1, 1996	Jan 31, 1996	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Jan 31, 1996	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
Nov 1, 1995	Nov 30, 1995	Nitrate	MCL	Yes	No	14.9	10 mg/L	—	Resolved	Nov 30, 1995	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
May 1, 1994	May 31, 1994	Nitrate	MCL	Yes	No	12.6	10 mg/L	—	Resolved	May 31, 1994	Nitrate Rule
Feb 1, 1994	Feb 28, 1994	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Feb 28, 1994	Nitrate Rule
Feb 1, 1994	Feb 28, 1994	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Feb 28, 1994	Nitrate Rule
Feb 1, 1994	Feb 28, 1994	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Feb 28, 1994	Nitrate Rule
Feb 1, 1994	Feb 28, 1994	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Feb 28, 1994	Nitrate Rule
Feb 1, 1994	Feb 28, 1994	Nitrate	MCL	Yes	No	10.7	10 mg/L	—	Resolved	Feb 28, 1994	Nitrate Rule
Jan 1, 1994	Mar 31, 1994	Nitrate	MCL	Yes	No	10.6	10 mg/L	—	Resolved	Mar 31, 1994	Nitrate Rule

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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