- Waternet - Texas Water Resources Institute
- twri.tamu.edu
- Water news, subject index, keyword search, experts directory, research reports, about TWRI, web links.
4.0
(si*)
<10
- Greywater
- www.greywater.com
- Technical information on characteristics and system designs.
3.8
(si*)
>150
- National Onsite Wastewater Recycling Association (NOWRA)
- www.nowra.org
- Founded in 1991 as a national professional organization to advance and promote the onsite wastewater industry.
3.6
(si*)
>30
- Septic Protector
- www.septicprotector.com
- How septic systems function, what causes them to fail, information and products to help prevent them from failing.
3.0
(si*)
>10
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