(a) Individual onsite water supply systems shall be designed and constructed in accordance with the standards of the State Commissioner of Health as set forth in Appendix 5-B of this Title.

(b) All treatment devices for an individual onsite water supply must be designed, constructed and installed in accordance with standards acceptable to the State Commissioner of Health as set forth in Appendix 75-B of this Title.

(c) The standards set forth in Appendix 75-C of this Title shall represent statewide water quality standards for individual onsite water supply systems. The State or county health department official having jurisdiction may require that individual onsite water supply systems be tested for compliance with the standards set forth in Appendix 75-C of this Title, and for such additional contaminants as such official determines are necessary or appropriate to protect public health.