Yes I use a softener and I believe I have it set to 25 but after seeing this I think I will dial it back some more. Can be a little hard to read as it copied differently and some are given just in mg/l and some Grains per Gal and some both.
City Name Province Hardness mg/L Hardness Grains/Gallon Source
Almonte ON 361 - 463
Source
Amherstburg ON 102 - 105
Ancaster ON 120 8.4
Source
Ansnorveldt ON 112 6.5
Source
Arnprior ON 50
Source
Aurora ON 133 7.7
Source
Ayr ON 21
Source
Azilda ON 80 - 100
Baden ON 20
Source
Ballantrae/Musselman’s Lake ON 174 10.2
Source
Barrie ON 170 - 257, 103 - 137 10 - 15, 6- 8
Beamsville ON 242
Belleville ON 100 - 144
Bolton ON
115 - 128 7 - 7.6
Source
Bracebridge ON 8 - 12
Source
Branchton Meadows ON 27
Source
Brampton ON 115 - 128 7 - 7.6
Source
Brantford ON 310 18
Source
Breslau ON 25
Source
Brockville ON 120 7
Buckingham Woods ON 286 16.6
Source
Burks Falls ON 171
Burlington ON 121 8.5
Caledon East (Palgrave System) ON 16 - 22
Source
Carleton Place ON 88 - 130
Source
Cayuga ON 120 8.4
Source
Chatham ON 110 - 120
Source
Chepstow ON 14
Chippawa ON 131
Source
Clifford ON 250
Clinton ON 320
Source
Cobalt ON 55
Cobourg ON 115 6.7
Cochrane ON 350 - 380
Source
Collingwood ON 86 - 94
Source
Colling-Woodlands ON 306 17.9
Source
Conestogo - East of Grand River ON 32
Source
Conestogo - West of Grand River ON 21
Source
Copper Cliff ON 80 - 100
Cornwall ON 120
Creemore ON 352 20.6
Source
Delhi ON 176 - 180 11.6 - 11.8
Deseronto ON 103 - 122
Source
Dryden ON 60
Dundas ON 120 8.4
Source
Dunnville ON 120 8.4
Source
Elmira ON 325 19
Essex ON 120 7
Etobicoke ON 121 - 142
Source
Fonthill ON 254
Fort Williams ON 30 - 60
Source
Foxboro Green ON 57
Source
Galt ON 20 - 24
Gannonoque ON 60 - 120 3.5 - 7
Goderich ON 103
Grimsby ON 119
Source
Guelph ON 360 - 550
Source
Hagersville ON 120 8.4
Source
Haileybury ON 85.6
Hamilton ON 120 8.4
Source
Hanover ON 290 - 510
Source
Harrow ON 120 7
Hawkesbury ON
Heidelberg ON 32
Source
Hespeler ON 325 19
Ingersoll ON 313 22
Source
Iroquois Falls ON 81
Islington ON 121 - 142
Source
Kapuskasing ON 80 4.7
Source
Kemptville ON 400 23
Kenora ON 72
Kingston ON 483 - 531, 120 - 133, 120 -126
Source
Kirkland Lake ON 40
Kitchener ON 325 19
Lake Rosalind ON 428 25
Lansing ON 121 - 142
Source
Leamington ON 120 7
Lindsay ON 180 11
Source
Linwood ON 8
Source
Listowel ON 261
Lloyd Brown ON 31
Source
London ON 101 - 119
Source
Lucan ON 102
Source
Lucknow ON 206 - 209 12.03 - 12.0
Mannheim Village ON 25
Source
Markham ON 128 7.5
Source
Maryhill ON 21
Source
Mattawa ON 52.4
McKean ON 340 19.9
Source
Meaford ON 90.7
Merritton ON 124
Source
Midland ON 257 - 513 15 - 30
Mitchell ON 479 28
Mississauga ON
115 - 128 7 - 7.6
Source
Mount Forest ON 269 - 300 15.7 - 17.5
Mount Albert ON 302 17.7
Source
Musselman's Lake ON 174 10.2
Source
New Dundee ON 21
Source
New Hamburg ON 19
Source
New Liskeard ON 85.6
New Lowell ON 50 2.9
Source
New Toronto ON 121 - 142
Source
Newmarket ON 141 - 199
Source
Niagara Falls ON 131
Source
Nobleton ON 254 14.9
Source
North Bay ON 12 - 21
North York Twsp. ON 121 - 142
Source
Norwick ON 256 18
Source
Oakville ON 121 8.5
Orillia ON 90.4 - 300.8 5.3 - 17.6
Source
Oshawa ON 137 9.6
Source
Ottawa ON 30
Source
Owen Sound ON 96
Paisley ON 350 20 - 21
Paris ON 684 37 - 43
Source
Parkhill ON 115
Parry Sound ON 35 - 60
Source
Pembroke ON 20 - 32
Penetanguishene ON 167 - 250
Perth ON 80 - 100
Peterborough ON 90.8 - 91
Source
Pickering ON 137 8.0
Source
Picton ON 125
Source
Port Arthur ON 30 - 60
Source
Port Colborne ON 119
Source
Port Dover ON 176 - 180 11.6 - 11.8
Port Elgin ON 107
Port Hope ON 115 - 121
Source
Prescott ON 115 - 125
Preston ON 325 19
Renfrew ON 40
Richmond Hill ON 123 7.2
Source
Roseville ON 16
Source
Sarnia ON 95
Sault Ste. Marie ON 40
Scarborough ON 121 - 142
Source
Schomberg ON 283 16.5
Source
Seaforth ON 320
Source
Shelburne ON 350 19
Shingletown ON 21
Source
Simcoe ON 176 - 180 11.6 - 11.8
Smith Falls ON 65
St. Agatha ON 21
Source
St. Catharines ON 124
Source
St. Clements ON 20
Source
St. Jacobs ON 19
Source
St. Marys ON 500 30
Stayner ON 274 16
Source
Stouffville/Whitchurch ON 331 19.4
Source
St. Thomas ON 210
Stratford ON 600 35
Strathroy ON 102
Source
Sturgeon Falls ON 52.4
Sudbury ON 80 - 100
Tavistock ON 308 22
Source
Tecumseh ON 32 - 140
Source
Teeswater ON 291 16 - 18
Thorold ON 124
Source
Tillsonburg ON 84 - 360 6 - 25
Source
Timmins ON 40 - 50
Toronto ON 121 - 142
Source
Trenton ON 200 - 250
Uxbridge ON 137 9.6
Source
Vaughan ON 128 7.5
Source
Walkerton ON 359 - 393 21 - 23
Wallaceburg ON 110 - 120
Source
Waterloo ON 325 19
Welland ON 122
Source
Wellesley ON 15
Source
West Montrose ON 28
Source
Weston ON 121 - 142
Source
Whitby ON 137 9.6
Source
Windsor ON 95 - 120
Source
Woodbridge ON 123 8.63
Source
Woodroffe ON 30
Source
Woodstock ON 313 22
Source
