Indiana tap water, by utility.

223 utilities with a full report, serving 4.8 million people as they report it. Regulated PFAS turned up at 35 of them.

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The 100 largest, by people served

Indiana utilities, The 100 largest, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Citizens Water - Indianapolis	Indianapolis	880,345	PFBS	0
Fort Wayne - 3 Rivers Filtration Plant	Fort Wayne	269,994	None found	1
Indiana American Water - Northwest	Gary	210,510	None found	0
Evansville Water Utility	Evansville	182,444	None found	0
South Bend Water Works	South Bend	115,000	PFOA, PFHxS, PFBS	0
Indiana American Water - S. Indiana	Jeffersonville	104,445	None found	0
Carmel Water Department	Carmel	99,927	None found	2
Indiana American Water - Johnson County	Greenwood	86,813	None found	0
City of Bloomington Utilities	Bloomington	83,000	None found	3
Hammond Water Works Department	Hammond	78,384	None found	1
Indiana American Water - Muncie	Muncie	74,030	None found	0
Lafayette Water Works	Lafayette	70,835	None found	0
Indiana American Water - Terre Haute	Terre Haute	67,765	PFOS, PFBS	0
Citizens Water of Westfield, LLC	Carmel	61,493	None found	0
Indiana American Water - Kokomo	Kokomo	59,313	None found	0
Anderson Water Department	Anderson	55,212	PFOS	1
Columbus Municipal Utility	Columbus	51,122	PFBS	0
Purdue Univ. Water Works	West Lafayette	50,000	PFHxS, PFBS	0
Mishawaka Utilities	Mishawaka	49,675	PFOS, PFHxS, PFBS	0
City of Lawrence Utilities	Lawrence	49,000	None found	5
Elkhart Public Works and Utilities	Elkhart	46,455	PFOA, PFHxS, PFBS	0
Indiana American Water - Noblesville	Noblesville	45,575	None found	0
Indiana American Water - Richmond	Richmond	41,485	None found	0
Valparaiso Department of Water Works	Valparaiso	36,000	None found	0
Indiana American Water - West Lafayette	West Lafayette	35,533	None found	0
Plainfield Water Works	Plainfield	34,477	PFBS	1
Bargersville Water Department	Bargersville	34,418	None found	0
Michigan City Department of Water Works	Michigan City	33,996	None found	0
Goshen Water Utility	Goshen	32,267	None found	0
Brownsburg Water Works	Brownsburg	31,250	None found	0
Crown Point Water Works	Crown Point	30,000	None found	0
Schererville Water Department	Schererville	30,000	None found	0
Marion City Water Works	Marion	28,363	None found	0
Greenfield Water Utility	Greenfield	26,671	None found	0
East Chicago Water Works	East Chicago	26,370	None found	0
St. John Municipal Water Utility	St. John	25,700	None found	0
Highland Water Works	Highland (Highlands)	23,984	None found	0
Munster Water Company	Munster	23,894	None found	0
Indiana American Water - Newburgh	Newburgh	22,215	None found	0
Laporte Water Works	Laporte	22,197	PFBS	2
Indiana American Water - Seymour	Seymour	20,725	None found	0
Chandler Water Works Department	Newburgh	20,120	None found	0
New Castle Utilities	New Castle	19,880	None found	0
Indiana American Water - Shelbyville	Shelbyville	19,093	None found	0
Eastern Heights Utilities	Bloomfield	19,028	None found	0
Vincennes Water Department	Vincennes	18,701	None found	0
Logansport Municipal Utility - Well Field	Logansport	18,369	None found	0
Stucker Fork Water Utility	Austin	17,718	None found	6
Jasper Municipal Water Utility	Jasper	17,440	None found	0
Huntington Water Department	Huntington	17,300	None found	3
Griffith Water Department	Griffith	16,893	None found	0
Lebanon Utilities	Lebanon	16,840	None found	1
Dyer Water Department	Dyer	16,800	None found	0
Ramsey Water Company, Inc.	Ramsey	16,475	PFOA	1
Frankfort Water Works	Frankfort	16,422	None found	0
Indiana American Water - Crawfordsville	Crawfordsville	15,930	PFBS	0
Watson Rural Water Company	Jeffersonville	15,750	None found	0
New Haven Water Department	New Haven	15,700	None found	0
Sellersburg Water Department	Jeffersonville	15,655	PFOA	0
Brown County Water Utility	Morgantown	15,368	PFOA, PFOS, PFBS	0
Madison Water Department	Madison	15,323	PFOA, PFBS	0
Martinsville Water Utility	Martinsville	15,000	None found	0
Ellettsville Water Works	Ellettsville	14,500	None found	3
Huntertown Water Works	Huntertown	14,058	None found	0
Bedford City Utilities	Bedford	14,000	None found	0
Indiana American Water - Warsaw	Warsaw	13,835	PFBS	0
Washington Water Works	Washington	13,690	None found	1
Jackson County Water Utility	Brownstown	13,667	PFOA, PFOS	0
Eastern Bartholomew Water	Taylorsville	13,547	None found	0
Patoka Lake Regional Water	Dubois	13,503	None found	0
Connersville Utilities	Connersville	13,282	None found	0
German Township Water District Inc.	Evansville	12,890	None found	0
Auburn Water Department	Auburn	12,800	None found	0
Greencastle Department of Water	Greencastle	12,699	None found	2
Greensburg Municipal Water Works	Greensburg	12,650	None found	7
Indiana American Water - Wabash	Wabash	12,140	None found	0
Brazil City Water Works	Brazil	12,000	None found	0
Patriot Water Department	Patriot	11,937	None found	0
Indiana American Water - Lowell	Lowell	11,908	None found	5
North Lawrence Water Authority	Bedford	11,625	None found	3
Peru Water Department	Peru	11,417	None found	0
Borden Tri - County Region	Borden	11,000	None found	4
Princeton Water Department	Princeton	10,875	None found	0
Speedway Water Works	Speedway	10,578	None found	0
Danville Water Works	Danville	10,500	None found	0
Edwardsville Water Corporation	Georgetown	10,442	None found	0
Tri - Township Water Corporation	Lawrenceburg	10,435	None found	0
Kendallville Water Department	Kendallville	10,300	None found	0
Bluffton Utilities Water Dept	Bluffton	10,298	None found	0
City of Boonville	Boonville	10,260	None found	0
Plymouth Water Department	Plymouth	10,241	None found	0
Indiana American Water - Mooresville	Mooresville	10,083	None found	0
Pike - Gibson Water, Inc.	Oakland City Junction	10,000	PFOA, HFPO-DA, PFBS	1
Bbp Water Company	Spencer	9,903	None found	0
Decatur Water Department	Decatur	9,900	None found	0
Columbia City Water Department	Columbia City	9,892	None found	0
Angola Water Department	Angola	9,340	PFBS	0
Tell City Water Department	Tell City	9,315	PFOA	0
Dubois Water Utilities	Dubois	9,078	None found	0
South Harrison Water Corporation	Corydon	9,057	None found	0

Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.