17.  All treatment units or treatment systems shall incorporate solids by-pass protection prior to the dispersal of effluent.  Solids by-pass protection shall be done by one of the following:

1.  Outlet filter that conforms to the following:
a. Tested under NSF/ANSI Standard 46;

b.  Maintain a current product listing with an ANSI accredited third-party certifier;

c.  Bear a listing mark; and
d. Be rated by the manufacturer with a daily flow  rate of one and one-half (1 ½) times the total
required treatment unit capacity.

2.  Media filtration that meets the following:

a.  Media filter is the treatment unit; or

b.  Media filter is used as polishing filter for another treatment unit.

3.  Other methods approved by the Division.