Water
Purification
Hard Water
Testing
Softeners
Filters

Water Testing

If you are on a municipal water system, the water supplier can tell you the hardness level of the water they deliver. If you have a private water supply, you can have the water tested for hardness.

As a guide, 60% of the UK population live in a hard water area. Most water softener companies will supply you with a free testing kit.

Once you've tested your water supply, the hardness of your water will be reported in grains per gallon, milligrams per liter (mg/l) or parts per million (ppm). One grain of hardness equals 17.1 mg/l or ppm of hardness.

Classification	mg/l or ppm	grains/gal
Soft	0 - 17.1	0 - 1
Slightly hard	17.1 - 60	1 - 3.5
Moderately hard	60 - 120	3.5 - 7.0
Hard	120 - 180	7.0 - 10.5
Very Hard	180 & over	10.5 & over

There are many commercial ways of treating hard water including water filters, water softeners, electromagnetic water conditioners.

Water Purification Hard Water Testing Softeners Filters