Very elevated nitrates after installation.
"I put one of these filters in on a fluoride job for a single point of use faucet. I retested the water after installation. The fluoride was gone but the water testing laboratory called and told me the nitrates were though the roof, nearly 100 mg/L. I went back to the job, ran the water for nearly 1/2 hour. Had to retest the raw and treated water for nitrates to be sure it wasn't from the well. The nitrates did come down to 8 mg/L through the filter and 0 from the well. Still elevated, I probably will not use this filter in the future."






