More than 60 natural wastewater treatment systems are in use in Auroville. Most recycling systems combine a pre-treatment device, a main treatment planted filter, and a post-treatment holding facility, usually consisting of one or more ponds or polishing tanks. Research and development has shifted to more efficient pre-treatment. Auroville has several units which are actively implementing waste water treatment systems, including CSR, Aqua engineers, and others.
Some of the Systems
Merriam Hill / Centre Field
septic tank/ planted filter/ collection tank / 15 users
Carel's House / Samasti
septic tank/ planted filter/ polishing tank / 16 users
Shradhanjali / Auroshilpam
septic tank/ lagoon system with aquatic plants/ overflow/ 27 users
Jean & Eva's House / Djaima
septic tank/ planted filter/ collection tank/ 2 users
Djaima community housing
septic tank/ planted filter/ infiltration/ 18 users
Vikas community
Lagoon system with aquatic plants/ polishing tank/ 25 users
Auromode / Auroshilpam
baffled reactors/planted filter/ sump/ 130 users
Grace community
Imhoff tank/ rootzone treatment system/ overflow sump/ 35 users
Hilde and Tency's House (2 treatment systems) / Centre Field
settling tank/ planted filter/ polishing tank/ 4 users
Tineke and Silvano's House / Centre Field
septic tank/ planted filter/ collection tank/ 2 users
Samasti Community II
septic tank/ planted filter/ collection tank/ 20 users
Prarthna community
septic tank/ planted filter/collection tank/ overflow & infiltration/ 25 users
Invocation, Surrender and Arathi community
Imhoff tank/ planted filter/ polishing pond/ 60 users
Visitors' Centre
septic tank/ flushing tank/ planted filter (vertical type)/ overflow canal / 50 users
Aspiration Community
septic tank/ Imhoff tank/ planted filter/ polishing pond/ 150 users
Natural Colour dying unit / Kottakarai
Imhoff tank/ aeration bed/ polishing tank/ industrial small scale user
Centre Guest House Kitchen/Laundry
planted filter/ collection tank/
Quiet Healing Centre
septic tank/ rootzone treatment system / collection tank/ 35 users
Valerie and Michael's House / Centre Field
planted filter/ infiltration/ 4 users
Samya and Kalya House/ Centre Field
Septic tank/ planted filter/ infiltration / 3 users
Auroville Centre for Scientific Research / Auroshilpam
septic tank/ planted filter/ infiltration/ 25 users
Collective Solar Kitchen
Imhoff tank/septic baffled reactor tank / infiltration pond
Madhuca Community
Imhoff tank/ planted filter/ polishing pond / 12 users
Kuilapalayam Village community toilets
septic baffled tank reactor / infiltration
Edayenchavadi Village community toilets
septic baffled tank reactor / infiltration
Promesse
septic tank/ planted filter / infiltration/ 6 users
