(1)
All sewage systems shall be classed as one of the following:
(a)
Class 1 — a chemical toilet, an incinerating toilet, a recirculating toilet, a self-contained portable toilet and all forms of privy including a portable privy, an earth pit privy, a pail privy, a privy vault and a composting toilet system,
(b)
Class 2 — a greywater system,
(c)
Class 3 — a cesspool,
(d)
Class 4 — a leaching bed system, or
(e)
Class 5 — a system that requires or uses a holding tank for the retention of hauled sewage at the site where it is produced prior to its collection by a hauled sewage system.