Minimum Distance Requirements. COMPONENT OF SYSTEM SHALLOW WELL DEEP WELL PRESSURE WATER LINE STREAM DWELLING PROPERTY LINE Building Sewer 50 50 7 - - - Septic Tank 100 50 10 - 15** 10** Disposal Field 100 50 10 25* 20** 10** Dry Well 100 50 10 50* 20** 10** *Field or pit must not be in a floodplain. **These minimum distances may be reduced by the Health Officer.