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About
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Art Ludwig's bio
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Catalog
Water Storage-book
Oasis greywater-book
Builder's GW Guide-book
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Consulting
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Adobe Safety Cottage
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Education
Legalize sustainability

Frequently asked questions

Greywater central
Common greywater mistakes
Oasis greywater-book
Builder's GW Guide-book
System selection chart-pdf
Branched drain greywater systems
Diverter Valves (hardware)
Flow splitters (hardware)
Stub outs
Greywater greenhouse
Long-term acceptance rate
Grey water Q&A
Aguas grises-Español

Greywater policy center
CA gray water policy center
Builder's action summary
UPC&CPC improvements
IPC improvements

Composting toilets
Earth, & orchard toilets
Composting toilet Q&A

Transport/ bicycles
Invincible bearings
Healthy is sexy: bike!
How safe is bicycling?
What driving costs
The way of the bicycle

Integrated Design
Eco Design Principles-download
Ecological design photos
Education
Legalize sustainability
Integrated design examples
Indigenous community
Nature & balance gallery
Ecological design Q&A
Green 4,000 ft2 home?
Fruit tree chart

Water central
Water Storage-book
Wild water wisdom-article
Water testing-download
Fecal coliform counts
Ferrocement water tanks
Eco village house
Indigenous community
Slow sand filters
Stormwater
Rainwater harvesting

Activism
Healthy is sexy: bike!
What driving costs