SepticSmart Do's and Don'ts for an
Advanced Treatment Unit (ATU)
Advanced Treatment Units (ATUs), referred here to as an individual
residential system, are small biological treatment systems used to treat
wastewater to a higher degree than a traditional septic system.
septicsmart
U.S. Environmental Protection Agency
ATUs are used in many states to achieve a higher-quality wastewater than
what exits traditional septic tanks. In fact, they are necessary in some areas
— either because of the sensitivity of the environment, or because of site
conditions. ATUs are also designed to reduce nutrient loadings, whereas
traditional septic systems are not
As with all septic systems, an ATU's proper functioning relies on regular
maintenance. Due to its advanced components, an ATU needs more
maintenance than a traditional septic system.
To ensure proper functioning, most states require annual operation,
maintenance, monitoring and reporting as a requirement of the
homeowner's septic permit. A maintenance provider should perform these
services. Contact the ATU manufacturer for information on maintenance
providers. The ATU manufacturer trains maintenance providers to assure
they are familiar with the manufacturer's treatment system.
In addition to the Do's and Don'ts of Septic Systems. ATUs have some
additional do's and don'ts because of their advanced parts.
Follow Septic Sam's ATU do's and don'ts:
Don't:
• Turn off any air supply device, alarm or
electrical component of the system.
• Bypass the system.
• Modify, cover or move any system
components without prior approval
from the service provider.
• Pump the ATU without service provider
approval or supervision.
Do:
• Use soaps and detergents that are
low-suds, biodegradable, and low- or
phosphate-free.
• Fix leaky fixtures.
• Use low-flow fixtures.
• Dispose of unused medications in the
garbage.
• Substitute liquid fabric softener with
dryer sheets.
For more SepticSmart tips, visit www.epa.gov/septicsmart
EPA-832-F-14-008 • September 2014
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