Chicago Water Hardness Mg L

The calcium and magnesium hardness is the concentration of calcium and magnesium ions expressed as equivalent of calcium carbonate.

Chicago water hardness mg l. This water hardness scale build up comes at a significant cost. Hardness is caused by compounds of calcium and magnesium and by a variety of other metals. Water hardness conversion table ppm mmol l mg l french degrees german degrees grains per gallon degrees clark 1 is 0 0099 1 0 1 0 056 0 058 0 07 10 is 0 099 10 1 0 56 0 58 0 7 14 3 is 0 142 14 3 1 43 0 8 0 84 1 17 1 is 0 169 17 1 1 71 0 96 1 1 2 17 8 is 0 176 17 8 1 78 1 1. 0 to 60 mg l milligrams per liter as calcium carbonate is classified as soft.

Hard water causes scale to accumulate in pipe systems and equipment. Jumping mg l by 17 1 will change it to gpg. What is soft water. Footnote 12 footnote 13 in a recent survey of 525 municipalities throughout canada only 17 cities had drinking water hardness levels above 500 mg l.

Symptoms of hard water include. This map uses ppm measures. In ontario the hardness of drinking water from surface sources ranged from 3 7 to 296 mg l with an average of 95 mg l. Water hardness levels are depicted in milligrams per liter mg l parts per million ppm or grains per gallon gpg.

If a test for hard water is measured in parts per million or milligrams per liter you can take the total hardness level and divide it by 17 1 to get hardness in grains per gallon. Hard water has a noticeably unpleasant flavor but is still potable. Total permanent water hardness is calculated with the following formula. Hard water usually requires water softening equipment to make it usable for a home.

General guidelines for classification of waters are. 121 to 180 mg l as hard. The hardness of groundwater supplies was higher and levels ranged from 40 to 1300 mg l with an average of 294 mg l. For example if your water test shows 250 mg l hardness you actually have 14 62 grains per gallon.

Total permanent hardness calcium hardness magnesium hardness. A grain of water hardness is comparable to 1 7000th of a pound. The molar mass of caco 3 ca 2 and mg 2 are respectively 100 1 g mol 40. Treated or softened water 0 1 gpg total grains x 17 1 equals ppm slightly hard 1 2 gpg total grains x 17 1 equals ppm medium hard 3 7 gpg total grains x 17 1 equals ppm hard 7 10 5 gpg total grains x 17 1 equals ppm.

Water that is classified as hard has 150 300 ppm of minerals dissolved in it. Grains per gallon is the business standard approach for talking about water hardness. Hardness is usually expressed in grains per gallon or ppm as calcium carbonate equivalent. Mg l means milligrams per liter note.

Contingent upon where a water test is performed this data will be accounted for in mg l milligrams per liter or gpg grains per gallon. 61 to 120 mg l as moderately hard. And more than 180 mg l as very hard.