Private Water Well Classification's (12 VAC 5-630-360.)

The following classes of private wells are established for purposes of this chapter. These classes are in addition to those established in the current Commonwealth of Virginia Waterworks Regulations (12 VAC 5-590-10 et seq.) and are intended for use for private well systems:

Class III - Private wells constructed to be used as a source of drinking water. There are three subclasses:

  1. 1. Class IIIA - Drilled wells in which the annular space around the casing is grouted to a minimum depth of 20 feet.
    • The well shall be drilled and cased to a depth of at least 100 feet.
    • The cased drill hole shall pass through at least 50 feet of collapsing material such as caving sand, gravel or other material that will collapse against the casing.
  2. Class IIIB - Drilled wells in which the casing is installed to a minimum depth of 50 feet and the annular space around the casing is grouted to at least 50 feet.
  3. Class IIIC - Drilled, bored, driven or jetted wells other than Class IIIA and Class IIIB.
  4. Class IV - Private wells constructed for any purpose other than use as a source of drinking water.

Distance (in feet) Between a Well and a Structure or Topographic Feature.

Structure or Topographic Feature
Class IIIC or IV
Class III A or B
Building Foundation 10 10
Building Foundation (Termite Treated) 50* 50*
House Sewer Line 50* 50*
Sewer Main including force mains 50* 50*
Sewerage System 50 50
Pretreatment System (e.g. Septic tank, Aerobic Unit, etc.) 50 50
Sewage Disposal System or other contaminant source (e.g., drainfield underground storage tank, barnyard, hog lot, etc.) 100 50
Cemetary 100 50
Sewage Dump Station 100 50*

*Refer to Private Well Regulations 12 VAC 5-630-380 for details pertaining to exceptions and special construction provisions allowable by the Virginia Department of Health.

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