Greywater Action is a fiscally-sponsored project of the 501c3 nonprofit organization The Ecology Center in Berkeley, California. All contributions are tax-deductible in the US. If you would like to donate by check, make your check payable to "Ecology Center - Greywater Action" and mail it to Ecology Center, 1231 2nd Street, Berkeley, CA 94710. To contact us, email info@greywateraction.org.