typ

Septic system type

Type	Definition
1	Generic type conventional system
2	Generic type advanced system
3	Septic tank with conventional drainfield
4	Septic tank with Sand Absorption System (SAS) type 1
5	Septic tank with Sand Absorption System (SAS) type 2
6	Septic tank with in-tank N removal and Sand Absorption System (SAS)
7	Septic tank with effluent N removal recycle
8	Septic tank with corrugated plastic trickling Filter
9	Septic tank with open-cell form trickling filter
10	Single pass sand filter 1
11	Single pass sand filter 2
12	Single pass sand filter 3
13	Single pass sand filter 4
14	At grade recirculating sand filter
15	Maryland style Recirculating Sand Filter (RSF)
16	Recirculating Sand Filter (RSF)
17	Septic tank w/ constructed wetland and surface water discharge
18	Municipal wastewater w/ constructed wetland and surface water discharge 1
19	Municipal wastewater w/ constructed wetland and surface water discharge 2
20	Municipal wastewater w/ constructed wetland
21	Municipal wastewater w/ lagoon and constructed wetland
22	Waterloo biofilter (plastic media) 1
23	Waterloo biofilter (plastic media) 2
24	Peat biofilter
25	Recirculating textile filter
26	Foam or textile filter effluent
27	Septic, recirculating gravel filter, UV disinfection
28	Untreated Effluent - Texas A&M reference