Is Indiana tap water hard or soft?
Yes, mostly. 95 % of the 40 cities with published data in Indiana have hard or very hard water (over 120 mg/L). The median is 20 gpg, from 5 gpg in Angola to 28 gpg in St. John.
We have published hardness data for 40 cities in Indiana. The median is 20 gpg; the hardest water is in St. John (28 gpg), the softest in Angola (5 gpg).
95 % of these cities have hard or very hard water (over 120 mg/L).
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Cities in Indiana, hardest first
| gpg | mg/L | ||
|---|---|---|---|
| St. John | 28 | 479 | very hard |
| Noblesville | 27.3 | 467 | very hard |
| Fishers | 23.5 | 403 | very hard |
| Wabash | 23.2 | 397 | very hard |
| Mecca | 23 | 394 | very hard |
| Mooresville | 23 | 393 | very hard |
| Crawfordsville | 22.4 | 384 | very hard |
| South Bend | 22 | 377 | very hard |
| Greenwood | 22 | 376 | very hard |
| Shelbyville | 21.7 | 372 | very hard |
| Warsaw | 21.5 | 368 | very hard |
| Winchester | 21.5 | 368 | very hard |
| Kokomo | 21.2 | 363 | very hard |
| Westfield | 21 | 360 | very hard |
| Summitville | 21 | 359 | very hard |
| Sullivan | 20.8 | 356 | very hard |
| Muncie | 20.7 | 354 | very hard |
| Waveland | 20.7 | 354 | very hard |
| West Lafayette | 20.2 | 346 | very hard |
| Russiaville | 20 | 343 | very hard |
| Goshen | 20 | 342 | very hard |
| Merom | 19.9 | 340 | very hard |
| Farmersburg | 19.3 | 330 | very hard |
| Terre Haute | 19.3 | 330 | very hard |
| Indianapolis | 18.5 | 317 | very hard |
| Whitestown | 18.3 | 314 | very hard |
| Seymour | 18.1 | 310 | very hard |
| Richmond | 17.1 | 292 | very hard |
| Sheridan | 16.3 | 279 | very hard |
| Claypool | 16 | 274 | very hard |
| Newburgh | 15.6 | 267 | very hard |
| Carmel | 13.3 | 228 | very hard |
| Charlestown | 11.2 | 192 | very hard |
| Jeffersonville | 11.2 | 191 | very hard |
| Crown Point | 8.8 | 150 | hard |
| Lowell | 8.6 | 148 | hard |
| Gary | 8.2 | 140 | hard |
| Fort Wayne | 7.6 | 130 | hard |
| Evansville | 7 | 119 | moderately hard |
| Angola | 5 | 86 | moderately hard |
FAQ
Is Indiana water hard or soft?
Yes, mostly. 95 % of the 40 cities we cover have hard or very hard water; the median is 20 gpg.
Which city in Indiana has the hardest water?
St. John, at 28 gpg, has the hardest water of the 40 cities with published data.
Which city in Indiana has the softest water?
Angola, at 5 gpg, has the softest water of the 40 cities with published data.
Do I need a water softener in Indiana?
Above about 120 mg/L (7 gpg) scale builds up in water heaters, kettles and dishwashers, and a softener or at least regular descaling pays off. Look up your own city in the table: in Indiana the values range from 5 gpg to 28 gpg.
On a private well? Well water hardness in Indiana by county →