State Well Codes

New PVC, wrought iron, steel or other KDHE approved materials. Watertight, and will extend at least 12 in. above surface, and no less than 20 ft. below ground level. Shall be an above-grade surface completion, at-grade surface completion may be used if all requirements of subsection (s) are met. Casing may be cut off below the ground surface to install a pitless well adapter or unit. No opening shall be made through casing except for pitless well adapter or unit installation.

Natural organic or nutrient producing material not to be used during construction. Toxic material shall not be used in the construction, reconstruction, treatment, or plugging of a water well, unless the material is flushed from the water well before use. Wells not to be constructed in pits, basements, garages, or crawl spaces. Known contaminated water-producing zones in aquifer shall be cased and grouted to prevent movement of groundwater from that zone into fresh groundwater zones.

No Standard Specified.

No Standard Specified.

Annular space shall be filled with neat cement-bentonite slurry, bentonite, native clay, or drill cuttings. Casing to be set into bedrock a min of 10 ft. if in consolidated formations when overburden is < 30 ft. thick. Casing to be set into bedrock a min of 2 ft. if in consolidated formations when overburden is > 30 ft. thick. Casing to extend a min of 2 ft. into stable rock below the lowermost void whenever voids are encountered. Coupling to be cemented to bottom of casing. Diameter of drill hole to be min of 1 3/4 in. > I.D. of casing. Drill hole diameter to be a min of 1 3/4 in. > casing diameter. Drill hole to be a min of 2 in. > I.D. of casing. Drilled Wells in Consolidated Formations: Drilled Wells in Unconsolidated Formations: If obtaining water from a lower formation, casing to extend at least 2 ft. below crevices or fractures. If overburden is 30 ft. thick or less, watertight seal to reach depth of at least 20 ft. & 10 ft. into bedrock. If overburden is > 30 ft. thick, watertight seal to be a min of 2 ft. into stable rock. If pumping level is < 20 ft. below ground surface, casing to extend 10 ft. below pumping level. If pumping level is > 20 ft. below ground surface, casing to extend 5 ft. below pumping level. If temporary surface casing is to be installed, annular space to be filled to depth of at least 20 ft. Joints to be solvent-cemented or threaded & coupled. Plastic Casing Installations: Space may also be filled with a mechanical packer. Treat pipe spigot & socket w/ cleaner-primer. Well casing to be driven when water is obtained from thick, unstable bedrock or overburden. All materials used in construction, modification and abandonment shall be approved for use in water wells by NSF, ASTM or API standards. Materials containing lead shall not be used in the construction of a water supply well. shall be constructed to allow access for repairs, maintenance, treatment, and inspection.

Extend to at least 20 ft. below surface. Casing not to be cut off or into below ground unless a pitless well unit or adapter is being installed. Materials must meet NSF, ASTM or API standards. Outer casing to be removed after well completion.

No Standard Specified.

At least the upper 5 ft. of casing, liner pipe, brick, stone, & metal to be removed. Driller shall fill the well with sealing materials or inert earth materials from bottom of the well to a minimum of 20 ft below ground surface, and fill remainder with sealing materials to minimum of 5 ft below ground surface. Uppermost 5 ft of well shall be filled with sealing materials or other suitable, inert earth material. Driven Wells: remove casing and screens, introduce sealing materials simultaneously from bottom of well to maximum 5 ft below finished ground surface Use sealing materials, clay, or other inert materials suitable to proposed land use to fill upper 5 ft. Flowing Artesian Wells: Plug with neat cement grout that is pumped under pressure and mixed with minimum quantity of water that will permit handling. Place well packer, cast-iron plug, or temporary bridge at bottom of confining formation immediately overlying artesian water-bearing horizon to seal off flow. Reporting required within 60 days following abandonment.

Vent must be used and shall terminate at least 1 ft. above ground surface. Vent shall be screened with brass, bronze, copper screen, or other screen materials approved by the secretary that are 16-mesh or greater, and turned down in a full 180-degree return bend to prevent entrance of contaminating materials.

Sanitary seals required and must be watertight.

75 ft.

100 ft.

75 ft.

50 ft.

No Standard Specified.

Casing or riser pipe to terminate no less than 4 in. above finished ground surface and slope the ground surface away from the well. Casing shall terminate minimum 2 ft above maximum known flood elevation.

Water to be tested for fecal coliform within 30 days of completion, disinfection, or modification of the well. Sample collected after residual chlorine purged. Samples shall not be frozen, and kept at 40 degrees F, containers sterile glass or plastic, and testing conducted at a laboratory certified in accordance with 401 KAR 8:040.

Capable of withstanding stress pipe is subjected to and corrosiveness of water. Steel or PVC screens with minimum inside diameter of 4 in. shall be installed, except for bored, drive or jetted wells. Shall be centered in borehole. Steel screen joints and couplings shall be welded or threaded. PVC screens shall have minimum SDR 26, Must have minimum Impact Classification of IC-1, ASTM D1784-07 or F480-066. ASTM F480-06b, SDR, SCH40 and SCH 80. Must meet or exceed NSF 14. Joints and couplings shall be welded, cemented, or threaded. Screen slot size shall prevent entry of sediment or other harmful material.

No Standard Specified.

No Standard Specified.

No Standard Specified.

Existing well pits not to be modified.

50 ft.

No Standard Specified.

Prohibited.

Disinfect wells prior to use. Negative bacteriological analysis required.

Chemical mixture to stand in well for at least 1 hr. Chemicals to meet AWWA or EPA standards. Development of gravel-packed wells, to be accomplished by jetting or cross washing method. Glassy polyphosphate chemicals are beneficial to development. Observed specific capacity to = theoretical specific capacity. Sand not to exceed 5 mg/L of water. To be backwashed or surged by starting & stopping pump. To be jetted w/ water (crosswashing). Use chemicals designed for developing & redeveloping. Wells to be developed at yield of 1.5x proposed pumping rate. Wells to be developed by surging w/ a plunger of piston while jetting using an air-lift. Wells to be over-pumped. Wells to be relatively sand free & have less encrustation problems.

To meet API 5A, API 5L, API 5LX, ASTM A53, ASTM A120, ASTM A134, ASTM A135, or ASTM A139. To meet ASTM A211, AWWA C201, AWWA C202, or Underwriters Laboratories Standard 888.

To be designated as PVC 1120 or PVC 1220 & have an ultra-violet degradation inhibitor. To be new PVC in accordance w/ AWWA A-100, ASTM F-480, or ASTM D-2241.

No standard specification.

No Standard Specified.

Concrete slabs to be at least 4 in. thick & extending at least 2.5 ft. from well in every direction. Sample tap to be on the well discharge line & be of a smooth nozzle type turned downward. Slabs to be sloped & drain away from well.

Cement-bentonite slurry is the preferred material for plugging. If permitted, heavy drilling mud or bentonite slurry weighing no less than 9 lb./gal. may be used to fill or plug. It is preferable for plugging to be applied using the pump-down method, in one continuos operation. Neat cement may also be used. Obstructions in well to be removed prior to plugging. Plugging & filler material to be free of foreign & organic additives. Pouring or dropping the material through water is not permitted. Top of casing to be cut off a min of 3 ft. below surface in areas subject to subsidence and/or farming.

No Standard Specified.

If sanitary seal is removed, drop pipe, jet line, & pump/motor to be cleaned.

100 ft.

100 ft.

30 ft.

100 ft.

Casing to be at least 2 ft. above maximum flood level. Locate wells to avoid flooding. Wells not to be constructed within 200 ft. of the levees. Wells not to be located in pits, basements, or the foundation of a building.

100 ft.

Casing pipe & couplings shall be marked according to ASTM F-480.

Allow space for tremie pipe. Community public wells to be cemented their full depth from top of the producing aquifer to ground surface. Conductor pipe to be cemented into place & annular space to be grouted w/ cement-bentonite slurry. Domestic wells to be cemented from a min depth of 10 ft. to ground surface using pump-down or gravity method. If sands between ground surface & production sand contain poor water, grout to extend to at least 20 ft. below. Non-community public wells to be cemented from a min depth of 50 ft. to surface. Pump-down method may be the Halliburton, inner string cementing, or positive placement-exterior method. Retainer, packer, shale trap, boot, or plug to attach to casing. Shall be placed by circulation or pump-down method. Slurry to be placed in annular space from bottom to top in one continuous operation. Slurry to fill a min annular space of 1.5 in. for 4 in. wells or less, & fill a min of 2 in. for 6 in. wells or greater. To be a cement-bentonite slurry.

To be used when casing is installed.

Any well, except a dug well, that does not terminate in the base of a pump should be equipped with a sanitary seal or watertight well cap designed to prevent surface water and foreign matter from entering the well. A flowing artesian well should be equipped with a shut-off valve and a backflow preventer so that the flow of water can be stopped completely when the well is not in use.. Temporary covered should be installed during interruptions of 1 week or longer. Semi-permanent watertight cover should be installed. For steel-cased well, semi-perm covered of steel or cast iron cap of at least 3/16 inches thick should be tack welded to top of casing.

Casing to be cut off before seal is placed. Materials not to be poured. Materials to be introduced into bottom of well & proceed up to about 4 ft. below ground surface. Slab to be at least 6 in. thick & at least 2 ft. > diameter of well casing or borehole wall. Surface seal to be emplaced no sooner than 24 hours after well has been plugged. To be performed only by registered well drillers. Top 4 ft. of well to be filled w/ concrete. Top of seal to comprise a concrete slab above top of plugged well. Wells to be plugged w/ neat cement grout, sand cement grout, concrete, or bentonite grout. To temporarily abandon, top of casing should be sealed with watertight threaded cap or steel plate welded watertight to top of casing. If pump or well seal is watertight, the pump may be left in place. A well that has, after extended use, been temporarily abandoned for 3 years should be permanently abandoned.

No Standard Specified.

Determine yield.

Shall be on every water well. Type to be determined by cost, water quality, well yield, required strength, & contractor\'s experience.

No Standard Specified.