Sewage disposal systems shall be designed and constructed in accordance with the requirements of the New Hampshire Department of Environmental Services and the following:
(A) Any soil with a seasonal high water table at or within two feet of the natural ground surface shall not be used for the disposal of sewage disposal system effluent.
(B) Any land having a natural slope of 15% or greater shall not be altered or used for the disposal of sewage disposal system effluent.
(C) Sewage disposal systems shall not be constructed in any soil with a percolation rate slower than 30 minutes per inch.
(D) Sewage disposal systems shall not be constructed in flood-prone areas as designated on the official flood-plain map of the city, and shall be located at least 500 feet from the surface water of Lake Massabesic and 100 feet from any other surface water or private water supply.
(E) Minimum lot sizes shall be determined by slope and soil type and shall be in accordance with guidelines established by the Health Authority.
(F) The bottom of the proposed leaching bed shall be a minimum of four feet above any seasonal high water table.
(G) For each proposed lot a test pit shall be dug and a percolation test shall be conducted on the proposed site for the leaching bed.
(H) Building permits shall not be issued for any lot until the sewage disposal system design and location has been approved by the Health Authority.
(I) Sewage disposal systems shall not be installed wherever soil or environmental conditions are such that, in the judgment of the Health Authority, a public health nuisance will be created.
(J) Sewage disposal systems shall not be covered or placed in operation without final inspection and approval by the Health Authority.
('71 Code, § 21-74) (Ord. passed 6-6-78; Am. Ord. passed 9-4-01) Penalty, see § 10.99