Thanks!!! Safety above taste seems obvious for a water filter.
https://www.wsj.com/articles/pittsburgh-tries-to-avoid-becom...
"A total of seven U.S. water systems, which each serve more than 100,000 people, had lead concentrations above the federal action level of 15 parts per billion in recent months, according to Environmental Protection Agency data. They include Portland, Ore., and Providence, R.I., which both exceeded the limit at least one other time in the past five years."