The information on this page is from a third party and is should be varified from Health department, AOSE, PE, and or Contractor.

Puraflo Peat Biofilter
Most common alternative system in our area is the Puraflo Biofilter. Most noticable because of many green tops of tanks that are extremely visible and not very attractive.  No maitence contracts available. Mostly maintence is the same as an conventional system, just have the filter cleaned annually and pumped every 3 to 5 Years. Estimated 20 to 25 Years before Peat Moss in tanks. As of now, there is no known company to contact to do this or answers of what to do when time to change it!!
Average cost 20K to 25K

Ecoflo Peat Biofilter
This system is becoming more and more popular in our area. Soil requirements are the same as Puraflo. Eight year service contract available from Ecoflo, best part is at the end of the eight years they come and change out the peat moss so it will be good for another eight years. Usally only one 3X5 top sticking out of the ground so it's not so unattractive.
Average cost 15K to 20K

Advantext
This system is not used as much around this area but there are a few out there. This system is basically a large filter that just keeps recirculating the waste water with other componets to clean the water. This is a very complex system and has lots of electical parts. This system is also monitored through the phone line to the manufactor to let them know what is going on at all times.There is not any maintence need aside from your 3 to 5 year pumping out of the tank.
Average cost around 20K

Microfast
This system is very close to a conventional system. To be simple it is a tank inside a tank. It is airated by a pump. Still has large drainfield. It is great for upgrades or repairs to old system or if you are adding bedrooms and need to upgrade you system without changing the drain field.
Average cost 12K to 15K

Multiflo
This is a very low maintenance, comes with 2 yr agreement and just requires your 3 to 5 year pump outs. Also good for upgrades or repairs, also requires large area for drainfield.
Average cost around 15K

Drip Dispersal
This system is pretty much your last resort and most expensive. This system is used with other pretreated system such as a microfast or puroflo system. This system is usally very close to the top of the ground so it is subject to daily elements such as cars or tractors even lawnmovers could be to heavy and damage these systems. You can twist the lines around trees  or turn them if needed. You must be very careful what tree's are planted around the system.
Average cost 30K to 50K


Here are some websites to read more about each of the above systems and also some other systems not menitoned.

www.bnm-us.com         Puroflo

www.premiertech.com  Ecoflo
www.orenco.com          Advantex
www.biomicrobics.com Microfast
www.consolidatedtreatment.com  Multiflo
www.clearstreamsystems.com      Clearstream
www.best1ofva.com                      B.E.S.T. 1

Local Ao
Atlee Onsite Soil Engineering, P.L.L.C.
Chip Dunn Jr.    A.O.S.E.    P.E. 
8515 Steeplebush Place
Mech. Va 23116
804-569-7733

Soil Evaluations
David Miles    A.O.S.E
804-758-3511

Erin L. Bess   A.O.S.E
P.O. Box 1329
King George Va 22485
540-809-8547
540-270-2119