Bio-Microbics, Inc.’s d-Rain Joint Rainwater Filter Drain helps manage on-site stormwater runoff for impermeable surfaces such as concrete. (Photo courtesy Bio-Microbics, Inc.)

Bio-Microbics, Inc.’s d-Rain Joint Rainwater Filter Drain helps manage on-site stormwater runoff for impermeable surfaces such as concrete. (Photo courtesy Bio-Microbics, Inc.)

Bio-Microbics, Inc.’s d-Rain Joint Rainwater Filter Drain helps manage on-site stormwater runoff for impermeable surfaces such as concrete. (Photo courtesy Bio-Microbics, Inc.)