HomeMy WebLinkAboutWhy is Cross Connection Control Important Why is Cross Connection Control Important?
By Samantha Conner & Melisa Blaney % „u, oo
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PRIVATE 0/N•
`•,,\WE LL
• % � PUBLIC
._.♦ "�� WATER
..._. SUPPLY
CONNECTION BETWEEN PUBLIC
AND PRIVATE SYSTEM IS PROHIBITED
Figure 6086.1
CONNECTION BETWEEN MVO SYSTEMS
How can a Cross Connection Happen ? ,
G„itY Au(HO
What is a backflow?
Backflow Back siphonage Backflow
Back Pressure Backsiphonage
An increase in w.itei pressure caused by elevation o. Reverse flow caused by a loss of supply pessuie
mechanical pumping that raises the system pressure
above the supply pressure WATER SUPPLY
WATER SUPPLY
Loss of
£ A ir supply Backflow
Supply
System pressure
pressure pressure
60 psi •• 80 psi
Normal direction of water flow
System pressure greater than supply pressure
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tWell —300 / J J, .1 Septic Tank
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Figure 4.31 A Cross-Connection to an Irrigation Well
Imgation wells are commonly cross-connected to dnnking water
supplies. The well water in this case has become contaminated
with wastewater from the septic system
Why is AuxiWater aHazard?
Cross Connection Control Is Not Optional
State Mandates CCUA to have a Cross Connection Control
Policy (F.A.C., Rule 62-555-360)
State has minimum backflow protection requirements.
CCUA adopted the CCCP in 1995, and amended and restated
over the years.
CCUA's minimum requirement for residences with wells is a
Reduced Pressure device.
When is a backflowpreventer needed ?
➢ Premises where there is an
auxiliary water source (On- ..
site wells) or reclaimed water r. �/�
system. �` .'
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➢ All Commercial, Industrial, = ��iv, Y
Multistory or ;, -=�° .? ;$" : A. f.. „a/,, " � >
Y, multifamily ,� � -<i ce ' V
residential buildings. ,` ' . ` ,. " `' "�
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Summary
Not installing a Staff will Staff can allow Staff will
backflow continue to work additional timing continue to work
preventer is not with the to allow with the
an option. customer on sufficient timing Department of
relocating the to consult and Health to
device. gather quotes improve
from backflow communications
installers. on new or
modifications
permits issued
for onsite wells.
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Questions . G
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