1. The sharing of a septic system by two or more wastewater sources not owned by the same person or entity is prohibited with the following exceptions:
A. Parcels within a residential subdivision that have been preapproved by EH, and designed by an engineer.
B. Shared private septic systems that are in existence on January 1, 2021, and are in proper working condition.
2. Alterations of existing systems (distribution box or septic tank replacements) are allowed on shared systems with approval from EH. For those shared systems not located in a subdivision, efforts shall be made to change them over to individual systems.
3. A failed system discovered as a result of a time of transfer inspection or a complaint shall result in requiring individual systems be installed for each parcel.