Indiana Water Quality Rankings 2026

All 40 cities ranked by water quality score

State Average81/100

Cities Ranked

Greenwood

Best City (97/100)

Mishawaka

Lowest Score (46/100)

85%

Above National Avg

Grade Distribution

How Indiana's 40 cities are distributed by water quality grade

A Range

45% of cities

B Range

45% of cities

C Range

8% of cities

0% of cities

3% of cities

Cities with good water quality (B or better)75%

30 out of 40 cities meet or exceed a B grade for water quality

All 40 Indiana Cities Ranked

Sorted by water quality score from best to worst. Click any city for a detailed water quality report.

Rank	City	Score	Grade	Population	Top Concern
1	Greenwood	97/100	A+	63,830	None identified
2	Franklin	96/100	A+	26,211	None identified
3	Crown Point	94/100	A	33,410	None identified
#4	Merrillville	93/100	A	35,246	None identified
#5	Westfield	93/100	A	46,410	None identified
#6	Muncie	91/100	A	65,194	None identified
#7	Richmond	90/100	A	35,467	None identified
#8	Elkhart	89/100	A-	53,923	None identified
#9	Lafayette	88/100	A-	72,556	None identified
#10	Noblesville	88/100	A-	69,604	None identified
#11	Carmel	87/100	A-	99,757	None identified
#12	Seymour	87/100	A-	21,673	None identified
#13	Anderson	86/100	A-	54,788	None identified
#14	South Bend	86/100	A-	103,453	None identified
#15	Fort Wayne	85/100	A-	270,402	None identified
#16	New Albany	85/100	A-	37,603	None identified
#17	Portage	85/100	A-	37,829	None identified
#18	Terre Haute	85/100	A-	60,690	None identified
#19	Bloomington	84/100	B+	79,168	None identified
#20	Gary	84/100	B+	69,739	None identified
#21	Indianapolis	84/100	B+	887,642	None identified
#22	Fishers	83/100	B+	98,977	None identified
#23	Highland	83/100	B+	22,479	None identified
#24	West Lafayette	83/100	B+	49,668	None identified
#25	Jeffersonville	82/100	B+	49,447	None identified
#26	Kokomo	82/100	B+	59,241	None identified
#27	Plainfield	82/100	B+	35,203	None identified
#28	Goshen	81/100	B+	34,517	None identified
#29	Lawrence	80/100	B+	49,370	None identified
#30	Valparaiso	76/100	B	34,609	None identified
#31	Clarksville	74/100	B-	22,333	None identified
#32	Schererville	74/100	B-	29,646	None identified
#33	Columbus	73/100	B-	50,474	None identified
#34	Marion	73/100	B-	27,730	None identified
#35	Hobart	72/100	B-	29,752	None identified
#36	Granger	71/100	B-	30,990	None identified
#37	Michigan City	66/100	C+	31,032	None identified
#38	Evansville	64/100	C	117,298	None identified
#39	Hammond	57/100	C-	77,879	None identified
#40	Mishawaka	46/100	F	51,063	None identified

Key Findings

The best water quality in Indiana is found in Greenwood with a score of 97/100 and a grade of A+. This puts Greenwood among the top-performing cities in the country for drinking water safety.

The most concerning water quality is in Mishawaka scoring 46/100 with a grade of F. Residents may want to consider home water testing and filtration options.

1 city with D or F grades:

Mishawaka — Score: 46/100, Grade: F

The statewide average score is 81/100, which is 9 points above the national average of 72/100. A strong majority (85%) of Indiana cities exceed the national average, indicating generally good water infrastructure across the state.

Frequently Asked Questions

Which city in Indiana has the best water quality?

Greenwood has the best water quality in Indiana with a score of 97/100 and a grade of A+. This score is based on contaminant levels, EPA compliance history, and infrastructure quality. Greenwood ranks among the top cities nationally for water quality.

Is Indiana tap water safe to drink?

Water quality varies across Indiana. The state average score is 81/100. 75% of Indiana cities have good water quality (grade B or better). However, 1 city has water quality concerns with a grade of D or F. Residents in those areas should consider water testing and filtration. Always check your specific city's water quality report for the most accurate local information.

How many Indiana cities have water quality concerns?

Of the 40 cities tracked in Indiana, 1 city has a D or F grade, indicating significant water quality concerns. An additional 3 cities fall in the C range, suggesting moderate issues. 34 out of 40 cities (85%) score above the national average of 72/100. Residents concerned about their water quality can check their city's detailed report for specific contaminant information.