CHAPTER II. STANDARDS
Part I. General
Section 1. Definitions.Note 5
- Well or Water Wells. As defined in Section 13710 of the Water Code, well
or water well:
"…means any artificial excavation constructed by any method for the purpose
of extracting water from, or injecting water into, the underground. This
definition shall not include: (a) oil and gas wells, or geothermal wells
constructed under the jurisdiction of the Department on Conservation, except
those wells converted to use as water wells; or (b) wells used for the
purpose of (1) dewatering excavations during construction, or (2) stabilizing
hillsides or earth embankments."
- Community Water Supply Well. A water well used to supply water for
domestic purposes in systems subject to Chapter 7, Part 1, Division 5 of the
California Health and Safety Code.
Included are wells supplying public water
systems classified by the Department of Health Services as "Noncommunity
water systems" and "State small water systems" (California Waterworks
Standards, Title 22, California Administrative Code). Such wells are
variously referred to as "Municipal Wells", "City Wells", or "Public Water
- Individual Domestic Well. A water well used to supply water for the
domestic needs of an individual residence or systems of four or less service
connections (or "hook-ups" as they are often called).
- Industrial Wells. Water wells used to supply industry on an individual
basis (in contrast to supplies provided through community systems).
- Agricultural Wells. Water wells used to supply water only for irrigation
or other agricultural purposes, including so-called "stock wells".
- Recharge or Injection Wells. Wells constructed to introduce water into
the ground as a means of replenishing groundwater basins, repelling the
intrusion of seawater or disposing of waste water.Note 6
- Air-conditioning Wells. Wells constructed to return to the groundwater
which has been used as a coolant in air conditioning processes. Because the
water introduced into these wells is degraded (from the standpoint of
temperature), such wells have been construed as waste discharges and are,
therefore, subject to the water quality control laws (Division 7 of the Water
Code and Division 5 of the Health and Safety Code).
- Horizontal Wells. Water wells drilled horizontally or at an angle with
the horizon (as contrasted with the common vertical well). This definition
does not apply to horizontal drains or "wells" constructed to remove
subsurface water from hillsides, cuts, or fills (such installations are used
to prevent or correct conditions that produce landslides).
- Exploration Hole (or Boring). An uncased, temporary excavation whose
purpose is the determination of hydrologic conditions at a site.
- Test Wells. Wells constructed to obtain information needed for design of
other wells. Test wells should not be confused with "exploration holes",
which are temporary. Test wells are cased and can be converted to other uses
such as groundwater monitoring and, under certain circumstances, to
- Inactive or Standby Well. A well not routinely operating, but capable of
being made operable with a minimum effort.
- Enforcing Agency. An agency designated by duly authorized local,
regional, or State government to administer and enforce laws or ordinances
pertaining to the construction, alteration, maintenance, and destruction of
water wells. The California State Department of Health Services or the local
health agency is the enforcing agency for community water supply wells.