What's the water hardness level in Jackonville, FL?

Question

like how many grains.

Answer 1

Because Jacksonville has several different water sources the hardness varies from location to location.  The data below has hardness first as mg/L as CaCO2 (calcium carbonate) then as grains per gallon.

WTP HARDNESS TABLE MAJOR GRID

Arlington 342 20

Beacon Hills 325 19

Brierwood 320 19

Cecil Field 123 7

Cobblestone 290 17

Community Hall 292 17

Deerwood I 506 30

Deerwood III 327 19

Fairfax 255 15

Hendricks 278 16

Highlands 234 14

Julington Creek 356 21

Lakeshore 192 11

Love Grove 360 21

Main Street 231 14

Marietta 238 14

McDuff 258 15

Monument Road 363 19

Norwood 222 13

Oakridge 318 19

Ridenour 281 16

Royal Lakes 375 22

Southeast Regional 298 17

Southwest 139 8

St. Johns Forest 261 15

St. Johns North 229 13

Westlake 319 19

Woodmere 240 14