Thank you for the response, Pooldoc. The entire village supposedly has tannins. But I think it is just iron. Took a sample to the pool store to have it tested. He said that he has treated many pools from that village. Alkilinity is way high (>250). So he gave us a liquid chemical (super potent). Was told to add 32 oz twice a day for 4 days. Then bring another sample in. After running the pump for 24 hours, I checked the filter and it was orange. This is village water, not well. Rest of the tests were fairly close to acceptible ranges.