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General Water System
Information
The River Rock, Cobblestone and Landmark subdivisions are all connected
to a common central water distribution system. The water for this
system comes from 2 large supply wells permitted as "Public Water
System" wells by the Department of Environmental Quality (DEQ). Water
pumped from these 2 wells goes to a 250,000 gallon buried concrete
water storage tank located on the west side of the pond. Water
from the tank is pumped to the distribution system through a series of 5
booster pumps. The pumps are turned on automatically depending on
the system pressure and water demand for all of the subdivisions.
Because these pumps vary in horsepower size you may notice pressure
increases and decreases as large and smaller pumps turn on and off.
There is no backup power to the booster station building. If the
power goes out, the water pressure will drop very quickly and water will
not be available until the power has been restored. Once restored
the booster pumps will automatically kick back into operation and
pressure will be restored.
General Water Quality Information
As a public water system, the River Rock County Water & Sewer District
is required to conduct routine sampling of the water and submit reports
to the DEQ. Each month the system is sampled for coliform
bacteria. Other parameters like lead, copper, VOCs, SOCs metals,
radon are sampled every 3 years according to the sample plan the DEQ
sends to the District.
When the water system and wells were constructed a sample of the water
was sent to Energy Labs for analysis to provide backgorund information
on the general quality of the water. A copy of that report
is provided below. The
water hardness for
River Rock is highlighted in yellow below.
Hardness levels are usually expressed in one of two different units,
milligrams per liter (mg/l) which is also parts per million (PPM); or
grains per
gallon as calcium carbonate. River Rock's water has about
200 mg/l of calcium carbonate in it
which is equivalent to 11.6
grains per gallon. This is considered to be "hard" water according
to
industry standards.
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