(a) OSS treating sewage and dispersing effluent from residential sewage sources with design flows up to 3,500 gallons per day;

(b) OSS for nonresidential sources of sewage if treatment, siting, design, installation, and operation and maintenance measures provide treatment and effluent dispersal equal to that required of residential sources;

(c) This chapter does not apply to industrial wastewater.

(a) Shall be acted upon in accordance with regulations in force at the time of issuance;

(b) Shall have a maximum validity period of three years from the date of issuance or remain valid for an additional year beyond the effective date of the ordinance codified in this chapter, whichever assures the most lenient expiration date; and

(c) May be modified to include additional requirements if the Health Officer determines that a serious threat to public health exists.