The Chicago Plumbing Code

Table-§ 18-29-608.17.1

Distance from Sources of Contamination to Private Water Supplies and Pump Suction Lines

Source of Contamination

Distance (feet)

Barnyard

100

Farm silo

25

Pasture

100

Pumphouse floor drain of cast iron draining to ground surface

2

Seepage pits

50

Septic tank

25

Sewer

10

Subsurface disposal fields

50

Subsurface pits

50

For SI: 1 foot = 304.8 mm.