ARTICLE 2. Definitions [13710. - 13713.]

Cal. Water Code - WAT 2.

in effect

Cal. Water Code - WAT § 13710. Section 13710.

“Well” or “water well” as used in this chapter, 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 of Conservation, except those wells converted to use as water wells; or (b) wells used for the purpose of (1) dewatering excavation during construction, or (2) stabilizing hillsides or earth embankments.

Cal. Water Code - WAT § 13711. Section 13711.

“Cathodic protection well,” as used in this chapter, means any artificial excavation in excess of 50 feet constructed by any method for the purpose of installing equipment or facilities for the protection electrically of metallic equipment in contact with the ground, commonly referred to as cathodic protection.

Cal. Water Code - WAT § 13712. Section 13712.

“Monitoring well” as used in this chapter, means any artificial excavation by any method for the purpose of monitoring fluctuations in groundwater levels, quality of underground waters, or the concentration of contaminants in underground waters.

Cal. Water Code - WAT § 13712.5. Section 13712.5.

Notwithstanding Section 13712, all wells constructed for the purpose of monitoring the presence of groundwater which has adversely affected, or threatens to adversely affect, crop root zones are exempt from the reporting requirements of this chapter.

Cal. Water Code - WAT § 13713. Section 13713.

“Geothermal heat exchange well,” as used in this chapter, means any uncased artificial excavation, by any method, that uses the heat exchange capacity of the earth for heating and cooling, in which excavation the ambient ground temperature is 30 degrees Celsius (86 degrees Fahrenheit) or less, and which excavation uses a closed loop fluid system to prevent the discharge or escape of its fluid into surrounding aquifers or other geologic formations. Geothermal heat exchange wells include ground source heat pump wells.

Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026