Homeowners
with septic systems need to take special precautions and actions in the
aftermath of hurricanes, says the U.S. Environmental Protection Agency. The
organization offers the following steps homeowners should take to ensure a safe
return to normal septic system operation:
Septic
systems should not be used immediately after floods. Drain fields
will not work until underground water has receded. Septic lines may have broken
during the flood.
If the ground area around your
septic system is saturated, it is recommended that you do not pump the tank.
Pumping the tank would be only a temporary solution. Under worst conditions,
pumping it out could cause the tank to try to float out of the ground and may
damage the inlet and outlet pipes. The best solution is to plug all drains in
the basement and drastically reduce water use in the house.
Do not use the sewage system until water in the soil absorption field is
lower than the water level around the house. Have your septic tank
professionally inspected and serviced if you suspect damage. Signs of damage
include settling or an inability to accept water.
Most
septic tanks are not damaged by flooding since they are below ground and
completely covered. However, septic tanks and pump chambers can fill with silt
and debris, and must be professionally cleaned. If the soil absorption field is
clogged with silt, a new system may have to be installed.
Only trained specialists should clean or repair septic tanks because
tanks may contain dangerous gases. Contact your health department for
a list of septic system contractors who work in your area.
If
sewage has backed up into the basement, clean the area and disinfect the floor.
Use a chlorine solution of a half cup of chlorine bleach to each gallon of
water to disinfect the area thoroughly.
Pump the septic system as
soon as possible after the flood. Be sure to pump both the tank and
lift station. This will remove silt and debris that may have washed into the
system. Do not pump the tank during flooded or saturated drainfield conditions.
At best, pumping the tank is only a temporary solution. Under worst conditions,
pumping it out could cause the tank to try to float out of the ground and may
damage the inlet and outlet pipes.
Do not compact the soil
over the soil absorption field by driving or operating equipment in the area.
Saturated soil is especially susceptible to compaction, which can reduce the
soil absorption field's ability to treat wastewater and lead to system failure.
Examine all electrical
connections for damage before restoring electricity.
Be sure the septic tank's manhole cover is secure and
that inspection ports have not been blocked or damaged. Check the vegetation
over your septic tank and soil absorption field. Repair erosion damage and sod
or reseed areas as necessary to provide turf grass cover.
Go easy on your system. Whenever
the water table is high or your sewage system is threatened by flooding there
is a risk that sewage will back up into your home. The only way to prevent this
backup is to relieve pressure on the system by using it less.
To learn more about Hurricane Ike activities, visit
http://www.epa.gov/hurricane.