Bottles for taking well-water samples are available at North Central Public Health Department in The Dalles. After you collect your sample, deliver it to the Wicks Water Treatment Plant outside of The Dalles. Cost is $30 to test for bacteria (T coliforms and E coli) and nitrates. Results are private and only released to whomever is paying for the tests. Also, Ferguson Plumbing in The Dalles has a mail-in test kit you can purchase. You can use Sherman Transit to get to and from The Dalles.