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Porter County, Indiana — public water systems

At a glance

81 active public water systems are filed under Porter County, Indiana in EPA's SDWIS records, together reporting 60,622 people served. The largest is Valparaiso Department of Water Works, which reports serving 36,000 people. 8 are community water systems serving people where they live; the other 73 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

81

Population served

60.6K

Community systems

8

Groundwater share

98.8%

How does Porter County compare with other Indiana counties?

Porter County has the 12th-most active public water systems among the 109 counties listed for active Indiana systems in EPA records; among the 92 with 3 or more systems, the median has 26. Its systems report 60,622 people served in total, the 22nd-largest county figure in the state and 1% of the statewide total. The average system here reports serving 748 people, about half of the Indiana average of 1,456. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Porter County's drinking water come from?

By primary water source, Porter County's active systems draw on groundwater (79, 98%), purchased groundwater (1, 1.2%) and purchased surface water (1, 1.2%). Overall, 99% rely mainly on groundwater (including purchased groundwater) and 1.2% on surface water, compared with 97% and 2.8% across Indiana. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Valparaiso Department of Water Works, draws primarily on groundwater.

What kinds of water systems operate in Porter County?

Porter County's active systems break down as 8 community systems (9.9%), 16 non-transient non-community systems (20%) and 57 transient non-community systems (70%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (80%), local government (12%) and federal government (7.4%).

The 50 largest water systems in Porter County

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Active public water systems in Porter County, Indiana
#Water systemCountyPopulation servedTypeSource
1Valparaiso Department of Water WorksPorter36,000CommunityGroundwater
2Hebron Water DepartmentPorter3,724CommunityGroundwater
3L-A-C UtilitiesPorter2,441CommunityPurchased groundwater
4Kouts Water WorksPorter2,028CommunityGroundwater
5St. Elizabeth Seton CatholicPorter1,201Transient non-communityGroundwater
6Ogden Dunes WaterPorter1,110CommunityPurchased surface water
7Portage Jr. Miss Softball Inc..Porter1,000Transient non-communityGroundwater
8Citgo - ValparaisoPorter800Transient non-communityGroundwater
9Morgan Township SchoolPorter700Non-transient non-communityGroundwater
10Boone Grove Middle SchoolPorter700Non-transient non-communityGroundwater
11Luke Mobil #202Porter671Transient non-communityGroundwater
1249er Drive in TheatrePorter659Transient non-communityGroundwater
13Heartland Christian CenterPorter608Transient non-communityGroundwater
14Boone Grove High SchoolPorter600Non-transient non-communityGroundwater
15Porter Quick StopPorter502Transient non-communityGroundwater
16Forest Oaks Mhc, LLCPorter500CommunityGroundwater
17Liberty Bible ChurchPorter474Transient non-communityGroundwater
18Discovery Charter SchoolPorter454Non-transient non-communityGroundwater
19Valley Baptist ChurchPorter437Transient non-communityGroundwater
20Jackson Elementary SchoolPorter400Non-transient non-communityGroundwater
21Liberty Farms Mobile Home Park - #1Porter390CommunityGroundwater
22Creekside Golf CoursePorter306Transient non-communityGroundwater
23Sunset Hill Farm County Park - ManagerPorter255Transient non-communityGroundwater
24Church of Jesus Christ/Latter Day SaintsPorter250Transient non-communityGroundwater
25Faith Evangelical Bible ChurchPorter233Transient non-communityGroundwater
26Victory Christian AcademyPorter200Non-transient non-communityGroundwater
27Open Door Fellowship ChurchPorter178Transient non-communityGroundwater
28Opportunity Enterprises (Lakeside)Porter160Non-transient non-communityGroundwater
29Faith Fellowship ChurchPorter156Transient non-communityGroundwater
30Blast CampPorter153Transient non-communityGroundwater
31Mallards Pointe Water SystemPorter150CommunityGroundwater
32Baums Bridge InnPorter140Transient non-communityGroundwater
33Applegarth Properties, LLCPorter136Transient non-communityGroundwater
34Courts of Northwest Indiana - TennisPorter128Transient non-communityGroundwater
35Courts of Northwest Indiana - BasketballPorter128Transient non-communityGroundwater
36Camp LawrencePorter120Transient non-communityGroundwater
37Portage Parks Dept - Imagination GlenPorter120Transient non-communityGroundwater
38Leroys Hot StuffPorter110Transient non-communityGroundwater
39Forchetti Family YmcaPorter105Non-transient non-communityGroundwater
40Family Express - Distribution CenterPorter102Non-transient non-communityGroundwater
41Salem United Methodist FellowshipPorter100Transient non-communityGroundwater
42Faith Memorial Lutheran ChurchPorter98Transient non-communityGroundwater
43Cross of Christ Lutheran ChurchPorter96Transient non-communityGroundwater
44Kingdom Hall Jehovahs Witnesses - HebronPorter88Transient non-communityGroundwater
45In Dunes Natl Lakeshore-Bldgs 101-119Porter80Non-transient non-communityGroundwater
46Kingdom Hall of Jehovahs WitnessesPorter78Transient non-communityGroundwater
47Gabis Arboretum at Purdue Nw- DepotPorter75Transient non-communityGroundwater
48Gabis Arboretum at Purdue Nw - PavilionPorter75Transient non-communityGroundwater
49Shellbourne Conference CenterPorter72Transient non-communityGroundwater
50New Hope Church of GodPorter71Transient non-communityGroundwater

All other water systems in Porter County (31)

The remaining active systems filed under Porter County, largest first, with the population each reports serving.

Porter County water systems: frequently asked questions

How many public water systems are in Porter County, Indiana?

EPA's SDWIS records file 81 active public water systems under Porter County, Indiana: 8 community systems (9.9%), 16 non-transient non-community systems (20%) and 57 transient non-community systems (70%).

Who supplies drinking water in Porter County, IN?

The largest community water systems filed under Porter County are Valparaiso Department of Water Works (36,000 people served), Hebron Water Department (3,724 people served) and L-A-C Utilities (2,441 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Porter County's drinking water come from groundwater or surface water?

Of the 81 active public water systems in Porter County, 99% draw mainly on groundwater and 1.2% on surface water, counting purchased supplies. The largest system, Valparaiso Department of Water Works, uses groundwater.

Where can I find a water quality report for Porter County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 8 community systems are filed under Porter County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Porter County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Indiana water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Porter County, Indiana”, https://aquacensus.com/water-systems/indiana/porter (data as of October 1, 2026).