All wells governed and regulated by this chapter shall be constructed only in accordance with the following standards and criteria:
(a) All wells shall be constructed with a concrete base, at least three (3') feet in diameter or three (3') feet square and six (6") inches in thickness, poured to a finished grade at least three (3") inches above the ground surface, with the top of the casing extending at least one-half (1/2") inch through the concrete base.
(b) Domestic water supply wells shall be constructed with no less than an eighteen (18") inch pump pedestal and a casing vent.
(c) The construction of well pits shall be prohibited.
(d) All openings, other than required vents, at the top of a well shall be capped or equipped with watertight seals.
(e) All vents shall be open, with the opening facing ground level, and screened.
(f) If a pump motor is to be mounted over the well, a watertight seal shall be placed between the pump head and base, or between the pump head and production casing.
(g) If an offset surface pump or submersible pump is used, or if any wires or piping enter the well, watertight seals shall be placed around such openings.
(h) All pumping equipment shall be installed with protective devices to effectively prevent the entrance of foreign matter for back siphonage into the well casing. A properly designed air gap may be considered an acceptable protective device for agricultural wells. No person shall install any equipment or mechanism, or use any water-treating chemical or substance, if it is found that such equipment, mechanism, chemical, or substance may cause pollution or contamination of the groundwater supply. Such equipment or mechanism may be permitted only equipped with an approved backflow prevention device. (§ 1, Ord. 765, eff. October 7, 1976, as amended by § 9, Ord. 1015, eff. August 15, 1985; as amended by § 3, Ord. 1470, eff. July 14, 2016)