Section NR 812.23 - Driven point wells Driven point wells are typically constructed in sandy soil areas with a high water table and groundwater in these areas is very susceptible to contamination. If a driven point well is constructed, the well driller or well constructor shall ensure that all of the following requirements are met:
(1) LOCATION. A driven point well shall be constructed to meet the location requirements and minimum separation distances specified in s. NR 812.08, and may not be constructed in a floodway.(2) MATERIAL. Well casing pipe and screens used for driven point wells shall meet the requirements specified in s. NR 812.11(6) and (11).(3) FINAL CASING HEIGHT. The final height of a driven point well shall comply with s. NR 812.12(12).(4) MINIMUM DIAMETER. The minimum diameter of a driven point well is 1-1/4 inches.(5) DEPTH OF CASING. The well drive pipe, not including the screen, of a driven point well shall extend to a depth of 25 feet or to a depth 10 feet below the static water level in the well, whichever is greater.(6) FROST PROTECTION. Driven point wells, when protected against freezing, may be installed with a protective outer sleeve below frost depth. When installed in this manner, the top of the annular space between the well and the protective sleeve shall be sealed watertight with a sanitary well seal.(7) PUMP INSTALLATION. Pump installations for driven point wells shall be completed according to s. NR 812.32.(8) SCREEN REPLACEMENT. Screen replacement is considered new well construction and shall meet all the requirements of this chapter. Screens may not be replaced on driven point wells that do not comply with the location requirements of this chapter.(10) STARTER DRILLHOLES. Starter drillholes not exceeding 10 feet deep may be constructed to facilitate driving the pipe. If a starter drillhole is constructed, the annular space shall be sealed using the materials and methods specified in s. NR 812.13(8) following completion. The temporary outer casing shall be removed if possible.(11) FLOWING WELLS. The construction of a flowing driven point well shall meet the requirements specified in s. NR 812.15(1).Wis. Admin. Code Department of Natural Resources NR 812.23
Cr. Register, January, 1991, No. 421, eff. 2-1-91; am. (4) and (6), Register, September, 1994, No. 465, eff. 10-1-94.Amended by, CR 18-095: r. and recr. Register June 2020 No. 774, eff. 7/1/2020