SB471

Hawaii SB471 mandates denitrification capacity for newly installed or modified individual wastewater systems near shorelines or likely to pollute.

Hawaii SB471 requires newly installed or modified individual wastewater systems near shorelines or likely to pollute groundwater to include denitrification capacity. This is to protect nearshore waters and coral reefs, which are vital for ecosystem resilience and public health. The bill mandates compliance with National Sanitation Foundation and American National Standards Institute standard 245 for on-site residential wastewater treatment.