The white filter medium acts like a sponge to retain pollutants. March 25, 2013 https://www.putnamvalley.gov/wp-content/uploads/2025/12/PUTNAMVALLEY-1-VERTICALDARK-300x111.png 0 0 admin https://www.putnamvalley.gov/wp-content/uploads/2025/12/PUTNAMVALLEY-1-VERTICALDARK-300x111.png admin2013-03-25 21:32:162022-01-20 20:45:21
