§ 51.046 SEPTIC TANKS; REQUIREMENTS.
   (A)   In addition to compliance with the requirements of the National Plumbing Code, known as the Domestic Commerce Series, No. 28, June 1951, each tank shall be located at least 20 feet from any building and 50 feet from any well or cistern, and shall be constructed of 12-gauge steel, monolithic concrete or of brick or concrete blocks adequately coated inside so as to be impervious to water. Baffle shall be located from six inches to nine inches away from the inlet and outlet and must extend 12 inches beneath the sewer level in the tank. Each tank must be equipped with a manhole or similar suitably covered opening to permit inspection or cleaning.
   (B)   The feeder sewer from the tank to the laterals of the disposal field shall be equipped with a distribution box and shall be constructed of vitrified bell-and-spigot tile with cemented joints and shall be laid with a grade of one foot per 100 feet; disposal field tile shall be located at least 75 feet distant from any well and ten feet from the tank, and 30 feet from any building used for human habitation. No lateral shall be closer than ten feet to any lot line. There shall be at least 200 feet of disposal field tile, unless additional amounts are required by the County Health Department, consisting of four inch drain tile laid with open joints. Disposal tiles shall be laid to a depth of not more than two feet on a slope not to exceed six inches per 100 feet.
   (C)   Backfill in the trench under the tile stall be at least six inches of coarse gravel or crushed stone. Earth backfill shall have two feet of gravel or crushed stone over the tile and shall be well tamped.
   (D)   No septic tank or any pipes leading to or from the same shall be covered unless and until the tank and pipes have been inspected by the County Health Department and found to be in compliance with the ordinances of the city and with the state laws pertaining thereto.
(1980 Code, § 24.202) Penalty, see § 51.999