State Well Codes

25 ft.

50 ft.

8 ft.

1200 ft.

50 ft.

50 ft.

50 ft.

Must have valid WI well driller's license.

Halliburton & grout displacement methods to be approved. Neat cement to be placed from bottom to top using tremie pipe in one continuos operation. Tremie pipe may be thermoplastic rated at least 100 psi including PVC, CPVC, PE, PB, & ABS. Tremie pipe to be metal pipe, rubber covered hose w/ braided fiber of steel & rated for at least 300 psi. Well driller to let grout set for at least 12 hrs before commencing construction.

To consist of mixture of 1 bag of Portland cement, ASTM C 150 Type I or API-10A, Class A, cubic ft. of dry sand, & 5-6 gal water. To be placed with a tremie pipe. Must have approval to use.

May use conductor tremie pipe gravity or pipe-pumped, grout shoe-continuous injection, or well seal/tremie pipe-pumped. May use Halliburton or grout displacement method.

Bottom of conduit to extend at least 3 ft. below ground surface when electrical wires are buried beside well. Pump electrical cable to be protected in metal or plastic conduit.

Develop until water is clear & free of sand using mechanical surging, air surging, overpumping, or hydraulic or air-jetting.

Min. diameter 2 inches if steel casing, 4 inches if thermoplastic casing is used. Min. casing depth (not including screen) is 25 ft or 10 ft below static water level, whichever is greater.

Joints to be flush-threaded, integral-bell, solvent-cemented, or one-piece solvent cemented. Styrene-rubber not to be used, including ASTM F480. To be approved by NSF. To be PVC or ABS meeting ASTM F480 & having SDR of 21, 17, or 13.5. May not be driven, pushed, or forced. May only be used for non-potable high or low capacity wells, except school and wastewater treatment plant wells, and only in unconsolidated formations.

ASTM A 120 pipe not to be used. To meet ASTM A53, A106, A589 type I, Grade A or B-type II, Grade A, type III, API 5CT, 5D, or 5L.

To be new, unused, & non-reclaimed meeting ASTM or API standards.

Debris to be removed from well. If drill is 2.5-30 in. diameter, grout to be placed through tremie pipe or dump bailer if adding bentonite chips. Pit to also be abandoned except when pit is a subsurface pumproom. Pits to be abandoned by perforating floor, knocking out 1 wall, & fill in pit w/ clean, native soil.

Casing may be removed. Temporarily abandoned wells to be sealed w/ watertight cap threaded onto top of casing or drive pipe w/ steel plate.

Watertight casing or curbing of any well shall extend at lest 6 in. above ground surface, must be at least 2 ft above estimated water level of 100 flood if site is subject to flooding. Access ports and any other openings in cover are sealed or capped. Wells completed in unconsolidated formation, driller must backfill that portion of the borehole that extends more than 10 ft beyond casing or screen with either bentonite or chlorinated sand or pea gravel. If any portion of the bore hole extension penetrates a clay layer >6ft in thickness, that portion of the bore hole to be sealed w/bentonite.

Annular space to be filled to surface w/ bentonite, cement grout or neat cement. To extend from surface to depth of at least 18 ft. To have min diameter of 4 in. > nominal size of surface casing to include O.D. of bell & hub couplings. Must fully surround the permanent casing, be evenly distributed, free of voids, and extend to undisturbed or recompacted soil. Driller shall repair, replace, or install minimum of 18 ft or surface seal if damaged during reconstruction of casing, or if never existed.

To be free of contamination.

Permitted if it is made w/ fittings approved by department of health.

Lead packers prohibited.

50 ft.

50 ft.

100 ft.

Wells not to be located w/in certain minimum distances of known or potential contaminants. Wells to be located on high ground that is not in the floodway.

5 ft. from any building projection, shall not be located in garages, barns, storage buildings or dwellings.

Must be a licensed water well operator. Must pass a written & an on-site exam.

May be used in construction of seals or decommissioning wells. Shall be specifically designed for sealing or decommissioning and be within the industry tolerances for dry western sodium bentonite.

Neat cement or grout to be placed at least 72 hrs before additional drilling takes place.

annular space between upper drill hole & casing to be kept at leas 1/2 full w/ unhydrated bentonite or bentonite slurry. Hydrated sealing materials to be placed through tremie pipe from bottom to top in one continuous motion. If cement grout, neat cement, or bentonite slurry is pumped, upper drill hole may be min of 2 in. > O.D. of permanent casing. If consolidated formation encountered at depth < 18 ft. upper drill hole & casing to extend to min of 18 ft. Procedure 1: Procedure 2: Remainder of annular space to surface to be filled w/ cement grout, neat cement, or bentonite. Remainder of annular space to surface to be filled w/ cement grout, neat cement, or bentonite. Temporary casing to be min of 18 ft. long & at least 4 in. > diameter of permanent casing. Unperforated permanent casing to be driven into consolidated formation & sealed. Unperforated permanent casing to be installed to same depth & lower part of casing to be driven & sealed into solid rock. Upper drill hole at least 4 in > diameter of casing to extend from surface to sound, unfractured, consolidated formation. Upper drill hole at least 4 in, > diameter of casing to extend from surface to depth of at least 18 ft.

Active solids content bentonite to be 20% by weight or greater in all slurries. Additives to meet NSF/ANSI approval for use in potable water supply wells or equivalent approved by the department.

Use of explosives to be overseen by licensed individual.

Except for disinfection and cleaning of wells, a well drilling license is required for all other chemical conditioning that alters the condition of the water well.

If > 30 in., to have min wall thickness of 0.375 in.

To be plastic, steel or other corrosion resistant material. To extend or telescope at least 2 ft. into lower end of casing. Each string to extend or telescope at least 8 ft. into adjacent larger diameter liner pipe when > 1 string is used. May not be permanently fixed to well casing below land surface. To meet ASTM potable water standards. Must be new or like new, and be marked w/nominal size, class, type of material, SDR, ASTM designation, and have NSF seal of approval for potable water supplies. May only be used in consolidated formations. Use w/o gravel pack in conditions that will result in excessively turbid water.

If using concrete tile, combined total wall thickness & seal to be min of 6 in. Max diameter of particles not to exceed 1.5 in. & may not exceed 1/5 the min width of casing thickness. To be at least 6 in. thick & free of voids. To consist of clean, hard, & durable aggregate w/ no < 5 sacks of Portland cement per cubic yard of concrete.

All wells to be equipped w/ access port or w/ pressure gauge. Vent opening, observation port, or air-line equipment to extend at lest 6 in. above surface.

Wells not to be located in pits unless specifically requested by owner. The well shall be capped with a water tight cap meeting the Standard for Watertight Well Caps (PAS-2) adopted by the Water Systems Council, Chicago, IL. A sanitary seal shall not be used. Any well which is buried in a well pit, or underground enclosure shall be separately vented. The wiring for the pump shall either be sealed for water tightness where it enters the cap or be contained in a watertight conduit system.

The vent shall terminate in a downturned position, at or above the top of the casing or pitless unit in a minimum 1½ inch diameter opening covered with a 24 mesh, corrosion resistant screen. The pipe connecting the casing to the vent shall be of adequate size to provide rapid venting of the casing. Wells which have special construction (e.g., flowing wells) need not be vented.

All in-well pumps to have check valve. Torque arresters, taping of electrical lines, & piping to be used. All final pump installations to be performed by a licensed water well driller or licensed plumber. Submersible pumps: the electrical cable shall be firmly attached to the riser pipe at 20 foot intervals or less.

To be securely attached by welding, cementing, or threading. To be of durable watertight materials. Shall be at least same size as well casing. Must have field connection to lateral discharge from pitless unit of threaded, flanged, or mechanical joint connection, and have wellhead terminate at least 18 inches above final ground elevation, or 3 ft above highest known flood elevation, or as Secretary directs. Design of pitless unite shall allow access to disinfect well, facilities to measure water levels, cover at upper terminal of well, contamination-proof entrance connection for electrical cable, inside diameter as great as casing, up to and including 12 inches to facilitate repair on well, pump, or screen, at least 1 check valve w/in casing or compliance w/requirements of Secretary.

To not impart taste, odor, toxic substances, or bacterial contamination into well water.

25 ft.

10 ft., increased to 50 ft. when adjacent to agricultural cropland.

100 ft. Applies to rights-of-way (ROW) where herbicides have been applied in the past 12 months and may be applied in the future. May be increased to 200 ft. depending on the active ingredient in the herbicide according to Vermont Regulations for Control of Pesticides.

15 ft.

200 ft.