§ 73.13. Minimum horizontal isolation distances
(a) Minimum horizontal isolation distances shown in subsections (b)—(e) shall be maintained between the sewage disposal system and the features itemized except as provided by § 72.33 (relating to well isolation distance exemption). If conditions warrant, greater isolation distances may be required.
(b) The minimum horizontal isolation distances between the features named and treatment tanks, dosing tanks, lift pump tanks, filter tanks and chlorine contact/storage tanks shall comply with the following:
(1) Property line, easement or right-of-way—10 feet.
(2) Occupied buildings, swimming pools and driveways—10 feet.
(3) An individual water supply or water supply system suction line—50 feet.
(4) Water supply line under pressure—10 feet.
(5) Streams, lakes or other surface waters—25 feet.
(6) A cistern used as a water supply—25 feet.
(c) The following minimum horizontal isolation distances shall be maintained between the features named and the perimeter of the aggregate in the absorption area:
(1) Property line, easement or right-of-way—10 feet.
(2) Occupied buildings, swimming pools and driveways—10 feet.
(3) An individual water supply or water supply system suction line—100 feet.
(4) Water supply line under pressure—10 feet.
(5) Streams, water courses, lakes, ponds or other surface water—50 feet (for the purposes of this chapter wetlands are not surface waters).
(6) Other active onlot systems—5 feet.
(7) Surface drainageways—10 feet.
(8) Mine subsidence areas, mine bore holes or sink holes—100 feet.
(9) Rock outcrop or identified shallow pinnacle—10 feet.
(10) Natural or manmade slope greater than 25%—10 feet.
(11) A cistern used as a water supply—25 feet.
(12) Detention basins, retention basins and stormwater seepage beds—10 feet.
(d) The following minimum horizontal isolation distances shall be maintained between the features named and the wetted perimeter of the spray field:
(1) Property lines, easements or right of ways—25 feet.
(2) Occupied buildings and swimming pools—100 feet.
(3) An individual water supply or water supply suction line—100 feet.
(4) A cistern used as a water supply—25 feet.
(5) Water supply line under pressure—10 feet.
(6) Streams, watercourses, lakes, ponds or other surface waters—50 feet. For the purposes of this chapter wetlands are not surface waters.
(7) Mine subsidence, boreholes, sinkholes—100 feet.
(8) Roads or driveways—25 feet.
(9) Unoccupied buildings—25 feet.
(10) Rock outcrop—25 feet.
(e) The area within the wetted perimeter of the spray field may not be sited over an unsuitable soil profile.
Authority The provisions of this § 73.13 amended under section 9 of the Pennsylvania Sewage Facilities Act (35 P. S. § 750.9); The Clean Streams Law (35 P. S. § § 691.1—691.1001); and section 1920-A of The Administrative Code of 1929 (71 P. S. § 510-20).
Source The provisions of this § 73.13 adopted January 21, 1983, effective January 22, 1983, 13 Pa.B. 508.
Cross References This section cited in 25 Pa. Code § 71.63 (relating to retaining tanks); 25 Pa. Code § 72.32 (relating to sales contracts); 25 Pa. Code § 72.33 (relating to well isolation distance exemption); and 25 Pa. Code § 73.161 (relating to general).
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