How many water violations are in Grant County?

Grant County has 3,905 total drinking water violations across 47 water systems, of which 387 are health-based violations. 95.7% of systems have at least one violation.

How many people get water from Grant County systems?

Water systems in Grant County serve approximately 52,670 people through 47 public water systems.

Has PFAS been detected in Grant County water?

Under EPA UCMR5, 0 of 3 tested systems in Grant County had at least one PFAS detection (0.0% of the UCMR5-tested subset - not of all 47 SDWIS systems).

What types of water sources supply Grant County?

Water systems in Grant County use GW (47 systems) as their primary water sources.

Are health-based violations serious?

Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 9.9% of Grant County's violations are health-based. Among counties with any SDWIS violations, this extract puts Grant County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Grant County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Grant County ranks #924 of 3,254 counties by people served, and #25 of 92 counties in Indiana. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Indiana

Grant County, Indiana

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet IN053 · Grant County 47 sys · 3,905 viol · #924/3254

VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

VIOL-SEVERE 95.7% flagged
HEALTH-LOW 9.9% health
RANK-UPPER #924/3254
PHOTO-FINISH ±0.1 pp
PFAS-CLEAN 0.0% detect
SRC-GW GW lead 100%
SYS-MID 47 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: DeKalb County (+ 0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Grant County ranks #924 of 3,254 counties by people served, and #25 of 92 counties in Indiana. See methodology · corpus placement.

Grant County standing, mid-flagged corpus third

Flagged-system rate 95.7% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 9.9% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #924 of 3,254 · #25 of 92 in Indiana.

Water Systems

System Name	Population	Violations	PFAS
Marion City Water Works	28,363	36	Clean
Gas City Water Department	6,000	55	Clean
Upland Water Department	3,308	34	Clean
Fairmount Water Works	2,756	12	-
Jonesboro Water Department	2,034	84	-
Swayzee Water Utility	975	173	-
Eastbrook High School	900	40	-
Van Buren Municipal Utilities	864	76	-
Oak Hill JR./SR. High School	860	101	-
Lakeview Wesleyan Church & Elementary	750	138	-
Liberty Baptist Church	655	17	-
Madison-Grant High School	630	131	-
Route 22 Petroleum	549	142	-
Lighthouse Assembly of God	479	69	-
Sweetser Food Mart, Inc.	408	297	-
Sweetser Elementary	350	48	-
Marion Bp	252	189	-
Shiloh Park Retreat & Conference Center	250	121	-
Hidden Lake Campground	203	43	-
Arbor Trace Golf Course - Clubhouse	177	12	-
Woodland Hills Church of Christ	175	21	-
Central Indiana Ethanol, LLC.	159	0	-
The Ark Christian Ministries	154	30	-
Twin City Bible Baptist Church	130	191	-
Auto Owners Insurance	100	86	-
Suite Living LLC	90	230	-
Sweetser Cafe	82	26	-
Maple Run Church	80	24	-
Marion First Friends Church	80	40	-
Open Door Fellowship Church	80	1	-
World Gospel Mission	80	129	-
Fairmount MHP, L.P.	80	137	-
Sports Lake	77	133	-
Meshingomesia Country Club	72	132	-
Walnut Creek Golf Course	65	27	-
Marion Church of the Brethren	50	177	-
Union Chapel Baptist Church	50	159	-
Liberty Mobile Home Park	50	84	-
Subway	45	79	-
Old Oak Inn	27	18	-
American Legion Post #10	27	110	-
Idyl Wyld Roller Palace	27	35	-
Johnsons Amoco #2	27	24	-
Dollar General - Sweetser	25	3	-
Harts Celebration Center	25	72	-
Eastbrook School Corp - Maintenance Bldg	25	0	-
Mar Brook Campground	25	119	-

Compare beyond Indiana

Mid-flagged peers for Grant County

Cross-state counties nearest Grant County on flagged-system share (95.7%) and cumulative violation count (3,905). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.