Ordinance
The Loudoun County Health Department sent out letters in March 2012 to the 1,400 plus owners of alternative septic systems advising them that they are required to have their system inspected before July 1, 2012.

The Loudoun County Ordinance Chapter 1067 - Ordinance to Regulate the Establishment, Operation, and Maintenance of Alternative On-site Sewage Disposal Systems established requirements for operation, maintenance, and inspection of these alternative septic systems.

Colloquial Names
Examples of alternative systems by some of their colloquial names are:

Aerobic treatment unit (ATU) Drip distribution

Low pressure distribution (LPD) Peat filters

Sand filters Spray irrigation

Manufactures
Manufactures names, include:

Advantex American Drip Aquarobic

BEST Eco-Flo FAST

Geoflo Puraflo Whitewater

If you have one of these systems, it is most likely that you have a alternative system and if you did not receive a letter from the Health Department, you should call the department at 703-777-0234.

Resource

• Alternative Septic Systems FAQs