Washing your car is only a problem if you
don’t know where or how to do it correctly.
The average homeowner uses 116 gallons of
water to wash a car! Most commercial car
washes use 60 percent less water for the entire
process than a homeowner uses just to rinse
the car.
Among the many impacts of motor
vehicles on our environment, car
washing has been noted by water
quality experts as a serious contributor
to water pollution.
Water that runs off a car when it is washed
in a driveway, street, or parking lot can contain
substances that pollute the environment. Dirty
water containing soap, detergents, residue from
exhaust fumes, gasoline, heavy metals from
rust, and motor oils can wash off cars and flow
directly to storm drains and into the nearest
creek or stream where it can harm water quality
and wildlife.
The phosphates from soap can cause excess
algae to grow. Excessive algae smell bad, look
bad, and harm water quality. As algae decay,
the process uses up oxygen in the water that
fish need.
Car wash fundraisers can be a significant source
of this kind of pollution. These events are usually
held in heavily paved areas where there is
little runoff control or grass to filter out harmful
substances before they reach our waterways.
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