Links in this category of editors choices cover some of these topics:
waste management, recycling, reuse, liquid, solid, toxic, sewage, heat, greenhouse gas

• Environment Australia - Industry [aus]
  • encouraging improved environmental management practices
• Permaculture Research Institute [aus]
• National Environment Protection Council (NEPC) [aus]
• Australian Water Quality Centre (AWQC) [aus, sa]
• Institute for Sustainable Futures (ISF) [aus]
• New Zealand Water and Wastes Association (NZWWA) [nz]
• Australian Nuclear Science and Technology Organisation (ANSTO) [aus]
  • rehabilitate uranium mines, assess environmental impact, modelling geochemical processes, describe ground water movement, waste treatment
• Waste Management Association of Australia (WMAA) [aus]
• NSW Environment Protection Authority (EPA) [nsw]
• Department of Lands, Planning and Environment (DLPE) [nt]
• Canberra Organic Growers Society (COGS) - Worms [aus]
• Australian Vermiculture Resources Guide [aus]
• Reln Plastics - Home Composting [aus]
• Michael Mobbs' Sustainable House [aus]
  • grey water recycling, surplus solar energy fed back to grid, no waste water, Sydney's sustainable house at Chippendale
• Nature Conservation Council of NSW (NCC) [nsw]
  • peak umbrella organisation for community, conservation and environment groups, excellent search facility, links wide range environmental groups

Region codes [aus, nz, ant, ...] indicate the state or country that each site is relevant to.