Concerning approval of certain alternative on-site sewage systems.

SB 5635 streamlines approval for alternative on-site sewage systems (like advanced treatment units) by requiring local health officers to respond to permit applications within 30 days, provide written justification for denials or delays, and avoid arbitrary limits on such systems. It specifically mandates approval for alternative systems near water bodies with established phosphorus limits if they meet state treatment standards and won't violate water quality rules. The bill directly affects property owners, developers, and local governments managing septic permits, aiming to reduce water pollution from outdated systems while ensuring public health protections. It does not alter existing septic system regulations but clarifies local officials' responsibilities for reviewing modern alternatives.