HILLSBORO WATERWORKS

Wisconsin — Community Water System — PWSID: WI6630257

System Information

PWSID	WI6630257
System Name	HILLSBORO WATERWORKS
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	05
Serves School	No
Wholesaler	No
First Reported	Jan 28, 1981
Last Reported	Dec 17, 2025

Location & Contact

State	Wisconsin
City	Hillsboro
ZIP Code	54634
Address	CITY HALL- 123 MECHANIC ST
Organization	CITY OF HILLSBORO
Phone	—

Population & Service

Population Served	1,325
Service Connections	661

Drinking Water Violations (55)

This water system has 55 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, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 31, 2023	Consumer Confidence Rule
Jul 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 12, 2023	Consumer Confidence Rule
Jul 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 12, 2023	Consumer Confidence Rule
Jul 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 31, 2023	Consumer Confidence Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Sep 17, 2021	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Nov 4, 2021	Lead and Copper Rule
Jul 1, 2019	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Feb 25, 2020	Lead and Copper Rule
Jul 1, 2019	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Feb 25, 2020	Lead and Copper Rule
Jul 1, 2019	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Feb 25, 2020	Lead and Copper Rule
Jul 1, 2019	—	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Feb 25, 2020	Lead and Copper Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Dec 30, 2019	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 9, 2019	Public Notice Rule and Revised PN Rule
Jun 2, 2019	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Feb 24, 2020	Ground Water Rule
Jun 1, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Jun 1, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Jun 1, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Jun 1, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Apr 6, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Apr 6, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water Rule
Apr 6, 2019	—	Groundwater Rule	Other	No	No	—	—	—	Resolved	Dec 12, 2019	Ground Water 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.

Browse All Water Systems Water Safety Stats Water Safety Home

Browse All Water Systems Water Systems in Wisconsin