Septic systems treat and
disperse relatively small volumes of wastewater from individual
or small numbers of homes and commercial buildings. Septic
system regulation is usually a state, tribal, and local responsibility.
EPA provides information to homeowners and assistance to state
and local governments to improve the management of septic systems
to prevent failures that could harm human health and water
quality. Goff
Home Inspections recommends that every septic
system be checked before purchase and every year after.
If your septic tank failed, or you know
someone whose did, you are not alone. As a homeowner, you are
responsible for maintaining your septic system. Proper septic
system maintenance will help keep your system from failing
and will help maintain your investment in your home. Failing
septic systems can contaminate the ground water that you or
your neighbors drink and can pollute nearby rivers, lakes and
coastal waters.
- Locate your septic tank and drain field. Keep a drawing
of these locations in your records.
- Have your septic system inspected at least every three
years.
- Pump your septic tank as needed (generally every three
to five years).
- Don't dispose of household hazardous wastes in sinks
or toilets.
- Keep other household items, such as dental floss, feminine
hygiene products, condoms, diapers, and cat litter out
of your system.
- Plant only grass over and near your septic system. Roots
from nearby trees or shrubs might clog and damage the system.
Also, do not apply manure or fertilizers over the drain
field.
- Keep vehicles and livestock off your septic system. The
weight can damage the pipes and tank, and your system may
not drain properly under compacted soil.
- Keep gutters and basement sump pumps from draining into
or near your septic system.
- Check with your local health department before using
additives. Commercial septic tank additives do not eliminate
the need for periodic pumping and can be harmful to your
system.
A typical septic
system has four main components: a pipe from the home, a
septic tank, a drain field, and
the soil. Microbes in the soil digest or remove most contaminants
from wastewater before it eventually reaches groundwater. The
septic tank is a buried, watertight container typically made
of concrete, fiberglass, or polyethylene. It holds the wastewater
long enough to allow solids to settle out (forming sludge)
and oil and grease to float to the surface (as scum). It also
allows partial decomposition of the solid materials. Compartments
and a T-shaped outlet in the septic tank prevent the sludge
and scum from leaving the tank and traveling into the drain
field area. Screens are also recommended to keep solids from
entering the drain field. The wastewater exits the septic tank
and is discharged into the drain field for further treatment
by the soil. Microorganisms in the soil provide final treatment
by removing harmful bacteria, viruses, and nutrients.
Did you know that as a homeowner you're
responsible for maintaining your septic system? Did you know
that maintaining your septic system protects your investment
in your home? Did you know that you should periodically inspect
your system and pump out your septic tank? If properly designed,
constructed, and maintained, your septic system can provide
long-term, effective treatment of household wastewater. If
your septic system isn't maintained, you might need to replace
it, costing you thousands of dollars. A malfunctioning system
can contaminate groundwater that might be a source of drinking
water. And if you sell your home, your septic system must be
in good working order.
You should have your septic system inspected
at least every year by a professional and your tank pumped
as necessary (generally every 1 to 3 years).
Average indoor water use in the typical
single-family home is almost 70 gallons per person per day.
Dripping faucets can waste about 2,000 gallons of water each
year. Leaky toilets can waste as much as 200 gallons each day.
The more water a household conserves, the less water enters
the septic system.
Dental floss, feminine hygiene products,
condoms, diapers, cotton swabs, cigarette butts, coffee grounds,
cat litter, paper towels, and other kitchen and bathroom items
can clog and potentially damage septic system components. Flushing
household chemicals, gasoline, oil, pesticides, antifreeze
and paint can stress or destroy the biological treatment taking
place in the system or might contaminate surface waters and
groundwater.
Plant only grass over and near your septic
system. Roots from nearby trees or shrubs might clog and damage
the drain field.
Don't drive or park vehicles on any part
of your septic system. Doing so can compact the soil in your
drain field or damage the pipes, tank, or other septic system
components.
Keep roof drains, basement sump pump drains,
and other rainwater or surface water drainage systems away
from the drain field. Flooding the drain field with excessive
water slows down or stops treatment processes and can cause
plumbing fixtures to back up.
A key reason to maintain your septic system
is to save money! Failing septic systems are expensive to repair
or replace, and poor maintenance is often the culprit. Having
your septic system inspected (at least every 3 years) is a
bargain when you consider the cost of replacing the entire
system. Your system will need pumping every 3 to 5 years, depending
on how many people live in the house and the size of the system.
An unusable septic system or one in disrepair will lower your
property's value and could pose a legal liability. Other good
reasons for safe treatment of sewage include preventing the
spread of infection an disease and protecting water resources.
Typical pollutants in household wastewater are nitrogen phosphorus,
and disease-causing bacteria and viruses. Nitrogen and phosphorus
are aquatic plant nutrients that can cause unsightly algae
blooms. Excessive nitrate-nitrogen in drinking water can cause
pregnancy complications, as well as methemoglobinemia (also
known as blue baby syndrome) in infancy. Pathogens can cause
communicable diseases through direct or indirect body contact
or ingestion of contaminated water or shellfish. If a septic
system is working properly, it will effectively remove most
of these pollutants.