Grant County, Indiana — public water systems
At a glance
48 active public water systems are filed under Grant County, Indiana in EPA's SDWIS records, together reporting 52,771 people served. The largest is Marion City Water Works, which reports serving 28,363 people. 10 are community water systems serving people where they live; the other 38 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
48
Population served
52.8K
Community systems
10
Groundwater share
100%
How does Grant County compare with other Indiana counties?
Grant County has the 27th-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 52,771 people served in total, the 25th-largest county figure in the state and 0.9% of the statewide total. The average system here reports serving 1,099 people, about 24% below 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 Grant County's drinking water come from?
By primary water source, Grant County's active systems draw on groundwater (48, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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, Marion City Water Works, draws primarily on groundwater.
What kinds of water systems operate in Grant County?
Grant County's active systems break down as 10 community systems (21%), 10 non-transient non-community systems (21%) and 28 transient non-community systems (58%). 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 (75%) and local government (25%).
Water systems in Grant County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Marion City Water Works | Grant | 28,363 | Community | Groundwater |
| 2 | Gas City Water Department | Grant | 6,000 | Community | Groundwater |
| 3 | Upland Water Department | Grant | 3,308 | Community | Groundwater |
| 4 | Fairmount Water Works | Grant | 2,756 | Community | Groundwater |
| 5 | Jonesboro Water Department | Grant | 2,034 | Community | Groundwater |
| 6 | Swayzee Water Utility | Grant | 975 | Community | Groundwater |
| 7 | Eastbrook High School | Grant | 900 | Non-transient non-community | Groundwater |
| 8 | Van Buren Municipal Utilities | Grant | 864 | Community | Groundwater |
| 9 | Oak Hill Jr./Sr. High School | Grant | 860 | Non-transient non-community | Groundwater |
| 10 | Lakeview Wesleyan Church & Elementary | Grant | 750 | Non-transient non-community | Groundwater |
| 11 | Liberty Baptist Church | Grant | 655 | Transient non-community | Groundwater |
| 12 | Madison-Grant High School | Grant | 630 | Non-transient non-community | Groundwater |
| 13 | Route 22 Petroleum | Grant | 549 | Transient non-community | Groundwater |
| 14 | Lighthouse Assembly of God | Grant | 479 | Transient non-community | Groundwater |
| 15 | Sweetser Food Mart, Inc.. | Grant | 408 | Transient non-community | Groundwater |
| 16 | Sweetser Elementary | Grant | 350 | Non-transient non-community | Groundwater |
| 17 | Marion Bp | Grant | 252 | Transient non-community | Groundwater |
| 18 | Shiloh Park Retreat & Conference Center | Grant | 250 | Transient non-community | Groundwater |
| 19 | Hidden Lake Campground | Grant | 203 | Transient non-community | Groundwater |
| 20 | Arbor Trace Golf Course - Clubhouse | Grant | 177 | Transient non-community | Groundwater |
| 21 | Woodland Hills Church of Christ | Grant | 175 | Transient non-community | Groundwater |
| 22 | Central Indiana Ethanol, LLC. | Grant | 159 | Non-transient non-community | Groundwater |
| 23 | The Ark Christian Ministries | Grant | 154 | Transient non-community | Groundwater |
| 24 | Twin City Bible Baptist Church | Grant | 130 | Transient non-community | Groundwater |
| 25 | Colonial Crest LLC | Grant | 101 | Community | Groundwater |
| 26 | Auto Owners Insurance | Grant | 100 | Non-transient non-community | Groundwater |
| 27 | Suite Living LLC | Grant | 90 | Non-transient non-community | Groundwater |
| 28 | Sweetser Cafe | Grant | 82 | Transient non-community | Groundwater |
| 29 | World Gospel Mission | Grant | 80 | Non-transient non-community | Groundwater |
| 30 | Open Door Fellowship Church | Grant | 80 | Transient non-community | Groundwater |
| 31 | Maple Run Church | Grant | 80 | Transient non-community | Groundwater |
| 32 | Marion First Friends Church | Grant | 80 | Non-transient non-community | Groundwater |
| 33 | Fairmount MHP, L.P. | Grant | 80 | Community | Groundwater |
| 34 | Sports Lake | Grant | 77 | Transient non-community | Groundwater |
| 35 | Meshingomesia Country Club | Grant | 72 | Transient non-community | Groundwater |
| 36 | Walnut Creek Golf Course | Grant | 65 | Transient non-community | Groundwater |
| 37 | Liberty Mobile Home Park | Grant | 50 | Community | Groundwater |
| 38 | Union Chapel Baptist Church | Grant | 50 | Transient non-community | Groundwater |
| 39 | Marion Church of the Brethren | Grant | 50 | Transient non-community | Groundwater |
| 40 | Subway | Grant | 45 | Transient non-community | Groundwater |
| 41 | Old Oak Inn | Grant | 27 | Transient non-community | Groundwater |
| 42 | American Legion Post #10 | Grant | 27 | Transient non-community | Groundwater |
| 43 | Idyl Wyld Roller Palace | Grant | 27 | Transient non-community | Groundwater |
| 44 | Johnsons Amoco #2 | Grant | 27 | Transient non-community | Groundwater |
| 45 | Dollar General - Sweetser | Grant | 25 | Transient non-community | Groundwater |
| 46 | Mar Brook Campground | Grant | 25 | Transient non-community | Groundwater |
| 47 | Harts Celebration Center | Grant | 25 | Transient non-community | Groundwater |
| 48 | Eastbrook School Corp - Maintenance Bldg | Grant | 25 | Transient non-community | Groundwater |
Grant County water systems: frequently asked questions
How many public water systems are in Grant County, Indiana?
EPA's SDWIS records file 48 active public water systems under Grant County, Indiana: 10 community systems (21%), 10 non-transient non-community systems (21%) and 28 transient non-community systems (58%).
Who supplies drinking water in Grant County, IN?
The largest community water systems filed under Grant County are Marion City Water Works (28,363 people served), Gas City Water Department (6,000 people served) and Upland Water Department (3,308 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 Grant County's drinking water come from groundwater or surface water?
Of the 48 active public water systems in Grant County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Marion City Water Works, uses groundwater.
Where can I find a water quality report for Grant 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. 10 community systems are filed under Grant 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 Grant 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 Grant County, Indiana”, https://aquacensus.com/water-systems/indiana/grant (data as of October 1, 2026).