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Wastewater Treatment System Setbacks
Minimum required distances for placing components of a wastewater treatment system (septic system). This list is part of the Iowa Administrative Code 567-69 "On-Site Wastewater Treatment and Disposal Systems" which contains a complete set of rules governing the installation of wastewater systems and may be found here.
  Minimum distance in feet from:
   Septic tank (1) Secondary treatment (2)
 Private water supply well  50  100
 Public water supply well  200  200
 Groundwater heat pump borehole  50  100
 Lake or reservoir  50  100
 Stream or pond  25  25
 Edge of drainage ditch  10  10
 Dwelling or other structure  10  10
 Property lines (unless a mutual easement is signed and recorded  10  10
 Other type of subsurface treatment system  5  10
 Water lines continually under pressure  10  10
 Suction water lines  50  100
 Foundation drains or subsurface tiles  10  10
(1) Includes septic tanks, mechanical aeration tanks and impervious vault toilets.
(2) Includes subsurface absorption systems, mound systems, intermittent sand filters, constructed wetlands or waste stabilization ponds.