(a) 
The well contractor, or authorized agent thereof, shall mark the proposed well site with a conspicuous well stake. The well stake shall be visible.
(b) 
All wells may receive a site inspection prior to issuing the well permit.
(c) 
If a proposed well site is relocated, the well contractor, or authorized agent thereof, shall resubmit an amended site map indicating the new location. In no case shall drilling start at the new location until approved for drilling.
(Added by Ord. No. 3507, effective 8-31-17)
(a) 
No well hereafter constructed shall be located closer than from the following:
Front property line
25 ft.
Other property line
5 ft.
Septic tank
100 ft.
Leach line or disposal field
100 ft.
Sewer line (sanitary, industrial, main or lateral or combined storm water drain)
50 ft.
Seepage pit/Dairy pond
150 ft.
Animal or fowl enclosure
100 ft.
Underground storage tank (petroleum products)
150 ft.
Surface water (pond, lake, reservoir, canal, stream, brook, and seasonal drainage channel)
25 ft.
Existing well
50 ft.
(b) 
When the Health Officer determines that contamination exists, the Health Officer may increase the setback requirements specified in this section.
(c) 
The setback restrictions contained in this section are not violated when the location of a septic tank, leach or disposal field, solid sewer line, or seepage pit on property of another is not known to the permittee and could not by the exercise of reasonable diligence have been discovered.
(d) 
Cathodic protection wells are not subject to the setback from property line provisions of this section.
(Added by Ord. No. 3507, effective 8-31-17)
The well casing shall extend, in any case, not less than one half (1/2) inch above the top of the concrete base, and not less than eighteen (18) inches above the concrete base in a flood zone. At the time of completion of the well, the top of the casing shall be sealed with a weatherproof plate or cap, securely fastened in place.
(Added by Ord. No. 3507, effective 8-31-17)
Bulletins 74-81 and 74-90 or current versions are hereby referred to, adopted and made a part of this Chapter with the same effect as if fully set forth herein.
(Added by Ord. No. 3507, effective 8-31-17)
The casing of individual domestic water wells shall not be perforated within fifty (50) feet of the ground surface if the depth of the well is greater than fifty (50) feet. When possible, the uppermost perforations shall be below an impervious stratum in an aquifer of good quality water. If a domestic water well with perforations fifty (50) feet or less from the ground surface is deepened, the perforations fifty (50) feet or less in depth shall be sealed off to prevent commingling of water from that level with deeper water.
(Added by Ord. No. 3507, effective 8-31-17)
Where an individual domestic well has a depth of sixty five (65) feet or less, only the bottom fifteen (15) feet of the casing shall be perforated. Wherever possible, the perforations shall be kept below an impervious stratum.
(Added by Ord. No. 3507, effective 8-31-17)
(a) 
The annular seal for all wells, with the exception of community water supply wells, shall be a minimum of two (2) inches in radial thickness. The borehole diameter shall thus be at least four (4) inches larger than the outside diameter of the well casing.
(b) 
The annular seal for community water supply wells shall be a minimum of three (3) inches in radial thickness. The borehole diameter shall thus be at least six (6) inches larger than the outside diameter of the well casing.
(Added by Ord. No. 3507, effective 8-31-17)
Whenever a well penetrates one or more aquifers containing water the quality of which is such that the quality of water produced by the well, or the quality of water in other aquifers, will be significantly reduced if the waters are allowed to intermingle, the aquifer containing the low quality water shall be sealed so as to prevent such intermingling. Whenever an aquifer is required to be sealed, a ten (10) foot annular seal shall be formed in the confining formations, except that where the well bore ends in the aquifer to be sealed, the seal need not be extended into the lower confining formation so long as the bottom of the bore is sealed. There shall be no casing perforations in the aquifer to be sealed.
(Added by Ord. No. 3507, effective 8-31-17)
All annular seals shall be of neat cement grout, sand cement grout, concrete, bentonite-cement grout, or bentonite clay the composition of which shall conform to requirements of Bulletins 74-81 and 74-90 or current versions which are hereby referred to, adopted, and made a part of this Chapter with the same effect as if fully set forth herein. In no event shall the thickness of an annular seal be less than three (3) times the diameter of the largest aggregate used in the sealing material.
(Added by Ord. No. 3507, effective 8-31-17)
All water wells shall be provided with a watertight concrete base poured in a single, continuous operation on thoroughly compacted earth. The base shall have a minimum total thickness of fourteen (14) inches of which at least ten (10) inches shall extend above the ground level at the casing. The base shall extend horizontally in all directions at least one (1) foot from the outside of the well casing or the wall of the bore hole on gravel packed wells. The concrete base shall be adequately sloped so as to drain water away from the well casing.
(Added by Ord. No. 3507, effective 8-31-17)
Community water supply wells shall be provided with a sample spigot on the pump discharge line as close to the pump as practical. The sample spigot shall be on the discharge side of the check valve when a check valve is installed. The spout of the spigot shall not be threaded.
(Added by Ord. No. 3507, effective 8-31-17)
(a) 
All wells shall have a check valve or air gap which will prevent water from the discharge line from flowing back into the well.
(b) 
All existing community water supply wells shall have a device of the type described in subsection of this section and it shall be unlawful and a public nuisance to maintain a well without such a device.
(c) 
The devices of the type required to be installed under subsection (a) of this section shall be placed as close to the pump as practicable.
(d) 
It shall be unlawful to inject any herbicide, chemical or any other pollutant into the discharge line of a well which is not equipped with a device of the type described in subsection (a) of this section.
(Added by Ord. No. 3507, effective 8-31-17)
All wells shall be provided with an access pipe and/or drain plug by which disinfectants can be introduced into the well or the depth of water in the well may be measured. The pipe shall be extended to a height three (3) inches above the concrete base, be kept sealed, and be provided with a threaded cap. On community water supply wells the pipe shall also serve as an air relief vent, terminate downward, and be covered with sixteen (16) mesh screens to protect against contamination by material entering the pipe.
(Added by Ord. No. 3507, effective 8-31-17)
After the pump has been installed, all wells shall be disinfected with a solution containing at least fifty (50) parts per million available chlorine, which shall remain in the well for a period of not less than twenty-four (24) hours. This procedure shall be repeated on all community water supply wells as necessary to produce water which will yield negative results on two (2) consecutive biological samples tested in the manner prescribed in section 4-13-1052 of this Chapter. The gravel used in community water supply gravel packed wells shall be disinfected by mixing one-half (1/2) pound of tablets containing seventy (70) percent available chlorine with each ton of gravel introduced to the well. The chlorine tablets shall be evenly distributed throughout the volume of gravel used.
(Added by Ord. No. 3507, effective 8-31-17)
All pumps and pump motors installed or reinstalled directly over the casing of any well shall be provided with a sanitary seal between the pump base and the concrete base or between the well casing and the pump column pipe. Wells on which a submersible pump or a pump offset from the casing is installed or reinstalled shall have a steel plate fitted over the top of the casing with a watertight seal between the plate and the casing and between the casing and any pipes or conduits which enter the well through the steel plate. No pipe or conduit shall enter the casing from the side except access, air vent, and pump discharge pipes as required by this Chapter. Holes in the base of the pump which open into the well shall be sealed.
(Added by Ord. No. 3507, effective 8-31-17)
All community water supply wells shall establish a control zone as determined by the State Water Resources Control Board (Title 22, California Code of Regulations, Chapter 16, Article 3, Section 64560) and any subsequent revisions.
(Added by Ord. No. 3507, effective 8-31-17)