aquatic Industries, Inc.
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mAiNTENANCE ANd CArE
wATEr quALiTy iSSuES (continued):
2. ChEmiCAL quALiTy
The water supplied by individual wells or water systems always contains chemicals, usually in amounts below those
which the consumer would notice. examples of such chemicals, which are of potential concern for the owners of fill
and drain whirlpool bathtubs, are calcium and magnesium salts, copper, iron, manganese and sulfates. when these
chemicals are present in sufficient amounts, they may cause problems in whirlpool bathtubs. You should contact your
water supply or treatment company and follow their suggestions for treatment.
Calcium and magnesium Salts
- collectively, the various compounds of calcium and/or magnesium are referred to as
salts. calcium and magnesium salts are often found in ground water supplies and cause “hardness” in water. hard and
soft water are relative terms. hard water retards the cleaning action of soaps and detergents, causing expense in the
form of extra work and cleaning agents. when hard water is heated, it will deposit a hard scale. with regard to whirlpool
bathtubs, high calcium and/or magnesium levels may result in the formation of white stains and scale formation on the
inside of the tubs, especially noticeable with colored tubs. If this occurs, you need to contact the water supplier to
determine the calcium and/or magnesium content and/or corrosion potential of the water and follow their suggestions
for treatment. If you are on an individual well, you need to contact a water treatment company to test your water and
suggest solutions if a problem is present.
iron
- Iron is found in many natural waters especially from wells. Iron in water can also result from the corrosion of piping
in the water supply system, such as cast iron mains or galvanized steel service lines, or galvanized piping in the home
water system. High iron levels may result in the formation of brown stains in the vicinity of the faucet outlets of various
fixtures in the home. with whirlpool bathtubs, the staining may be particularly pronounced because the aeration action
can oxidize iron to a form that settles out on the inside of the tubs, especially noticeable in white tubs. If high iron in
the water is present, you can also notice rust colored deposits in your toilet tank or dishwasher. If this occurs, you
need to contact the water supplier to determine the iron content and/or corrosion potential of the water and follow their
suggestions for treatment. If you are on an individual well, you need to contact a water treatment company to test your
water and suggest solutions if a problem is present.
manganese-
Manganese is found in many natural waters, especially from wells. high manganese levels may result in the
formation of small black particles that can stain laundry, especially noticeable with whites such as sheets or towels. with
whirlpool bathtubs, the formation of small black particles may be particularly pronounced because the aeration action
in the tub can oxidize manganese to an insoluble form that is especially noticeable with white tubs. If high manganese
in the water is present, you may also notice black stains on white laundry. If this occurs, you need to contact the water
supplier to determine the manganese content of the water and follow their suggestions for treatment. If you are on an
individual well, you need to contact a water treatment company to test your water and suggest solutions if a problem
is present.
Pigmented Bacteria
- Water utilities from all over the United States have experienced calls from consumers inquiring and
complaining about pinkish substance on bathroom fixtures that is very persistent, appearing in the shower, sink and
along the water line of toilet bowls. with whirlpool bathtubs, the formation of this colored substance may be particularly
pronounced in white tubs. The residue is less likely a problem associated with water quality than with naturally occurring
airborne bacteria. The bacteria may produce a pinkish film, and sometimes a dark gray film, on surfaces that are regularly
moist, including toilet bowls, shower heads, sink drains and tiles. The problem is more common in humid areas of the
country. In any particular case, the determination of the exact species of bacteria causing the problem would require
lengthy and costly laboratory testing; however, most experts believe the bacteria responsible is serratia marcescens.
These bacteria thrive on moisture, dust and phosphates, and are widely distributed in soil, food and also in animals. The
American water works Association suggests that short of buying pink fixtures, the best solution to keep these surfaces
free from the bacterial film is continual cleaning. The AWWA recommends a chlorine containing compound as the best
cleaner and avoiding abrasives to avoid scratching fixtures, which will make them more susceptible to bacteria.
