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How do I prevent hard water scale?

Fortunately, there are quite a few great options to choose from when looking to protect water heating equipment from scale buildup.

These solutions range in cost, maintenance and application, so it is always best to consult with water treatment professionals before

making the ﬁnal decision on a water treatment solution.

– Ion exchanger water softeners: Water softeners are probably the most common solution used today for eliminating hard water.

Calcium and magnesium ions are removed from the water and replaced with sodium ions. Without the calcium and magnesium, hard

water scale cannot form.

– Product Preservers

: Prevents scale by transforming dissolved hardness minerals into harmless, inactive microscopic crystal particles.

These crystals stay suspended in the water and are passed to drain.

– Siliphos: Interferes with the ability of (calcium and magnesium) scale to crystallize. The suspended scale stays in the water and goes

down the drain.

CLASSIFICATION

mg/L OR PPM

(PARTS PER

MILLION)

GPG (GRAINS PER

GALLON)

Soft 0 - 17 0 - 1

Slightly Hard 17 - 60 1 - 3.5

Moderately Hard 61 - 120 3.5 - 7.0

Hard 121 - 180 7.0 - 10.5

Very Hard 180 and above 10.5 and above

Where is hard water found?

Hard water is everywhere. In fact, more than 85% of American

homes have hard water.

How is the hardness of

water measured?

Water hardness is measured in either parts per million (ppm) or

grains per gallon (gpg). Anything that measures above 3 gpg is

generally considered hard (Unites Americans Geological Survey)

and it is advised at this point to look into water treatment. The

U.S. Department of Interior and the Water Quality Association have

classiﬁed water hardness under several levels:

ALASKA

HAWAII

PUERTO RICO

OVER 14 gpg

10 to 14 gpg

7 to 10 gpg

3 to 7 gpg

LESS than 3 gpg

Extremely Hard

Very Hard

Hard

Moderately hard

Slightly Hard