Figure: 30 TAC §217.192(b)
Table G.5. - Filter Depths for Multi-Compartmented, Low Head, Automatic Backwash Filters
Filter Type
Type of Media
Effective Particle Size
(millimeters)
Minimum Depth
(inches)
Single Media
Sand
0.55-0.65
11
Dual Media
Anthracite & Sand
Anthracite
Sand
0.55-0.65
1.0-2.0
0.5-1.0
16
10
6