North Carolina Administrative Code › Title 15A - Environmental Quality › Chapter 18 - ENVIRONMENTAL HEALTH › Subchapter C - WATER SUPPLIES › Section .0200 - LOCATION OF SOURCES OF PUBLIC WATER SUPPLIES › Section 18C .0203 - PUBLIC WELL WATER SUPPLIES

Current through Register Vol. 39, No. 2, July 15, 2024
(a) A
				  site or sites for a water supply well to be used as a community or
				  non-transient, non-community water system shall be investigated by an
				  authorized representative of the Department prior to approval. Approval by the
				  Department is required in addition to any approval or permit issued by any
				  other state agency. The site shall meet the following requirements at the time
				  of approval:
(1) The well shall be located on
				  a lot so that the area within 100 feet of the well is owned or controlled by
				  the person supplying the water. The supplier of water shall be able to protect
				  the well lot from potential sources of pollution and to construct landscape
				  features for drainage and diversion of pollution.
(2) The minimum horizontal separation between
				  the well and known potential sources of pollution shall be as follows:
(A) 100 feet from any sanitary sewage
				  disposal system, sewer, or a sewer pipe unless the sewer is constructed of
				  water main materials and joints, in which case the sewer pipe shall be at least
				  50 feet from the well;
(B) 200 feet
				  from a subsurface sanitary sewage treatment and disposal system designed for
				  3000 or more gallons of wastewater a day flows, unless the well water source is
				  from a confined aquifer;
(C) 500
				  feet from a septage disposal site;
(D) 100 feet from buildings, mobile homes,
				  permanent structures, animal houses or lots, or cultivated areas to which
				  chemicals are applied;
(E) 100 feet
				  from surface water;
(F) 100 feet
				  from a chemical or petroleum fuel underground storage tank with secondary
				  containment;
(G) 500 feet from a
				  chemical or petroleum fuel underground storage tank without secondary
				  containment;
(H) 500 feet from the
				  boundary of a ground water contamination area;
(I) 500 feet from a sanitary landfill or
				  non-permitted non-hazardous solid waste disposal site;
(J) 1000 feet from a hazardous waste disposal
				  site or in any location that conflicts with the North Carolina Hazardous Waste
				  Management Rules cited as
				  15A NCAC
				  13A;
(K) 300 feet from a cemetery or burial
				  ground; and
(L) 100 feet from any
				  other potential source of pollution.
(3) The Department may require greater
				  separation distances or impose other protective measures if necessary to
				  protect the well from pollution, taking into consideration factors such as:
(A) the hazard or health risk associated with
				  the source of pollution;
(B) the
				  proximity of the potential source to the well;
(C) the type of material, facility, or
				  circumstance that poses the source or potential source of pollution;
(D) the volume or size of the source or
				  potential source of pollution;
(E)
				  hydrogeological features of the site that could affect the movement of
				  contaminants to the source water;
(F) the effect that well operation might have
				  on the movement of contamination; and
(G) the feasibility of providing additional
				  separation distances or protective measures.
(4) The lot shall be graded or sloped so that
				  surface water is diverted away from the wellhead. The well shall not have
				  greater than a one percent annual chance of flooding.
(5) If a supplier of water demonstrates that
				  it is impracticable, taking into consideration feasibility and cost, to locate
				  water from any other approved source and an existing well can no longer provide
				  water that meets the requirements of this Subchapter, a representative of the
				  Division may approve a variance for a smaller well lot and reduced separation
				  distances to meet existing demands. Additional monitoring under this Part or
				  other conditions shall be imposed if necessary to mitigate the increased risk
				  from the variance.