Terms used in this chapter mean:

(1)    "Area of influence," the area surrounding a pumping or recharging well within which the potentiometric surface or the water table has been changed;

(2)    "Board," the Water Management Board;

(3)    "Cone of depression," the shape of the area of influence in cross section;

(4)    "Critical aquifer protection area," all or part of an area located within an area for which an application or designation as a sole source aquifer has been submitted and approved by the administrator of the United States Environmental Protection Agency;

(5)    "Department," the Department of Agriculture and Natural Resources;

(6)    "Maximum contaminant level," the maximum permissible level of a contaminant in water which is delivered to any user of a public water system;

(7)    "Potentiometric surface," an imaginary surface representing the total head of groundwater in a confined aquifer and defined by the level to which water will rise in a well;

(8)    "Public water system," a system for the provision to the public of water for human consumption through pipes or other constructed conveyances, if the system has at least fifteen service connections or regularly serves an average of at least twenty-five individuals daily at least sixty days out of the year and as provided for in 40 CFR sections 141.2 and 142.2 as amended to January 1, 2011;

(9)    "Recharge area," the area through which water may percolate to the aquifer and eventually reach the well;

(10)    "Secretary," the secretary of the Department of Agriculture and Natural Resources;

(11)    "Sole source aquifer," an aquifer which provides fifty percent or more of the drinking water for an area and which if contaminated, would create a significant hazard to public health;

(12)    "Supplier of water," any person who owns or operates a public water system;

(13)    "Water table," that surface of a body of unconfined groundwater at which the pressure is equal to that of the atmosphere;

(14)    "Wellhead protection area," the surface and subsurface area surrounding a water well or wellfield, supplying a public water system, through which contaminants are reasonably likely to move toward and reach such water well or wellfield.

Source: SL 1983, ch 260, § 2; SL 1987, ch 259, § 1; SL 1991, ch 17 (Ex. Ord. 91-4), § 17; SL 1999, ch 181, § 1; SL 2011, ch 165, § 79; SL 2021, ch 1 (Ex. Ord. 21-3), § 53, eff. Apr. 19, 2021.