Setbacks 

MINIMUM SEPARATION DISTANCES FOR ON-SITE SEWAGE SYSTEMS

ITEMS REQUIRING SETBACK

FROM SEWAGE DISPOSAL
AREA INCLUDING
REPLACEMENT AREA

FROM SEPTIC TANK &
OTHER TREATMENT UNITS, EFFLUENT SEWER AND DISTRIBUTION UNITS

1.  Groundwater Supplies

100'

50'

2.  Temporarily Abandoned Wells

100'

50'

3.  Springs:
      *  Upgradient
      *  Downgradient

50'
100'

50'
50'

*4.  Surface Public Waters:
       *  Year round
       *  Seasonal

100'
50'

50'
50'

5.  Intermittent Streams:
      *  Piped (watertight not less than 25' from any part of on-site system)
      *  Unpiped

20'
50'

20'
50'

6.  Groundwater Interceptors:
      *  On a slope of 3% or less
      *  On a slope greater than 3%:
          -  Upgradient
          -  Downgradient

20'

10'
50'

10'

5'
10'

7.  Irrigation Canals:
      *  Lined (watertight canal)
      *  Unlined:
          -  Upgradient
          -  Downgradient

25'

25'
50'

25'

25'
50'

8.  Cuts Manmade in Excess of 30" (top of downslope cut):
      *  Which intersect layers that limit effective soil depth within 48" of surface
      *  Which do not intersect layers that limit effective soil depth

50'

25'

25'

10'

9.  Escarpments:
      *  Which intersect layers that limit effective soil depth
      *  Which do not intersect layers that limit effective soil depth

50'
25'

10'
10'

10.  Property Lines

10'

5'

11.  Water Lines

10'

10'

12.  Foundation lines of any building, including garages & outbuildings

10'

5'

13.  Underground Utilities

10'

-

*  This does not prevent stream crossingsof pressure effluent serwer.