Section 72Republic Act No. 123 shall be applied and enforced., Sec./Art. 72

Scope of Supervision of the Department The approval of the Secretary or his duly authorized representative is required in the following matters:

(a) Construction of any approved type of toilet for every house including community toilet which may be allowed for a group of small houses of light materials or temporary in nature;

(b) Plans of individual sewage disposal system and the sub-surface absorption system, or other treatment device;

(c) Location of any toilet or sewage disposal system in relation to a source of water supply;

(d) Plans, design data and specifications of a new or existing sewerage system or sewage treatment plant;

(e) The discharge of untreated effluent of septic tanks and/or sewage treatment plants to bodies of water;

(f) Manufacture of septic tanks; and

(g) Method of disposal of sludge from septic tanks or other treatment plants.