My folks used to have their washing machine flowing right out into the garden and it killed all the avocados my grandfather planted (and those were the kind they grow in Puerto Rico).
I just found this on soapnut trees that I hadn't seen through my last search:
One way to reduce total gray water effluent is to stop peeing in the toilet. Using that to feed plants (1:5-1:50 have been reported as effective dilution ratios), assuming no bladder infection, Rx drugs such as birth control pills... I don't have to worry about you guys being on BC pills, do I?
(Aw man, not this shit again!) :giggle