As used in this chapter, the following terms shall have the meanings indicated:
ABANDONED WATER WELLA well that meets any of the following criteria:
A. Construction was terminated prior to completion of the well;
B. The well owner has notified the local Board of Health that use of the well has, after extended use, been permanently discontinued;
C. The well has been out of service for at least three years;
D. The well is a potential hazard to public health or safety and the situation cannot be corrected;
E. The well is in such a state of disrepair that its continued use is impractical; or
F. The well has the potential for transmitting contaminants from the land surface into an aquifer or from one aquifer to another and the situation cannot be corrected.
AGENTAny person designated and authorized by the Board to implement, in whole or part, these regulations. To the extent provided by the Board, the agent shall have all the authority of the Board and shall be directly responsible to the Board and under its direction and control.
[Added 9-11-2023]
ALTERATIONA major change in the type of construction or configuration of a private water system, including but not limited to, adding a disinfection or treatment device, converting a water well with a buried seal to a well with a pitless adapter, extending a distribution system, converting a well using a well pit to a well with a pitless adapter, extending the casing above ground; deepening a well, changing the type of pumping equipment when that requires making new holes or sealing or plugging existing holes in the casing or wall of a well, and repairing, extending or replacing any portion of the inside or outside casing or wall.
ANNULAR SPACEThe space between two cylindrical objects, one of which surrounds the other. For example, the space between the wall of a drillhole and a casing pipe, or between an inner and an outer well casing.
APPLICANTAny person who applies to have a private well-constructed.
[Added 9-11-2023]
AQUIFERA geologic formation, group of formations, or part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to wells and springs.
ARTESIAN AQUIFERAn aquifer that is bounded above and below by impermeable materials or materials of distinctly lower permeability than the aquifer itself. The water in an aquifer confined in this manner will rise in a drilled hole or well casing above the point of initial penetration (above the bottom of the confining, or impermeable, layer overlying the aquifer).
BEDROCKSee "consolidated formation."
BENTONITEA mixture of swelling clay minerals containing at least 85% of the mineral montmorillonite (predominantly sodium montmorillonite) which meets the specifications of the most recent revision of API Standard 13A.
BENTONITE GROUTA mixture of bentonite (API Standard 13A) and water in a ratio of not less than one pound of bentonite per gallon of water.
CASINGAn impervious durable pipe placed in a boring to prevent the walls from caving and to serve as a vertical conduit for water in a well.
CERTIFIED COMPANYA person authorized by nontransferable Certification with the Department, under 310 CMR 46.00, to engage in the business of Well Drilling and Alteration, determining Well Yield and Pump Installation.
[Added 9-11-2023]
CERTIFIED INDIVIDUALAn individual authorized by nontransferable Certification with the Department to Drill of Alter Wells, as specified in 310 CMR 46.03(3).
[Added 9-11-2023]
CERTIFIED LABORATORYA laboratory certified by the Department for the analysis of drinking water and required water quality analytes. Provisional certification is acceptable.
[Added 9-11-2023]
COMMUNITY WATER SYSTEMA public water system which serves at least 15 service connections used by year-round residents or regularly serves at least twenty-five-year round residents.
CONCRETEA mixture consisting of Portland cement (ASTM Standard C150, Type or API Standard 10, Class A), sand, gravel, and water in a proportion of not more than five parts of sand plus gravel to one part cement, by volume, and not more than six gallons of water. One part cement, two parts sand, and three parts gravel are commonly used with up to six gallons of water.
CONFINED AQUIFERAn aquifer in which the groundwater is under pressure greater than atmospheric pressure: the static water level in a well tapping a confined aquifer rises to a level above the top of the aquifer.
CONFINING BEDA layer or body of soil, sediment, or rock with low vertical permeability relative to the adjacent aquifers above or below it.
CONSOLIDATED FORMATIONAny geologic formation in which the earth materials have become firm and coherent through natural rock forming processes. The term is sometimes used interchangeably with the word "bedrock" and includes, but is not limited to, basalt, granite, limestone, sandstone, and shale. An uncased drill hole will normally remain open in these formations.
CONTAMINATIONThe presence of any physical, chemical, biological, or radiological substance or matter in water at a concentration and for a duration or anticipated duration which, in the opinion of the regulating agency, would present a threat to the public health, using existing federal and state standards and guidelines where applicable.
CROSS CONNECTIONAny physical connection or arrangement between two otherwise separate piping systems, one of which contains potable water and the other water of unknown or questionable safety, whereby water may flow from one system to the other, the direction of flow depending on the pressure differential between the two systems.
CURBINGEither precast or poured-in-place, concrete well casing used to construct dug wells.
DEPARTMENTMassachusetts Department of Environmental Protection A well-used for the sole purpose of watering or irrigation. The well shall not be connected at any time to a dwelling of a building unless if meets the requirements of private drinking water well and have the Board’s written Approval.
[Added 9-11-2023]
DRAWDOWNThe difference between the static and pumping water levels.
DRILLED WELLA well in which the hole is excavated using mechanical means such as rotary, cable tool, or auger rigs.
DRIVE SHOEA forged or tempered steel collar, with a cutting edge, attached to the lower end of a casing by threading or welding, to protect the lower edge of the casing as it is driven.
FLUSHINGThe act of causing a rapid flow of water from a well by pumping, bailing or similar operation.
FORMATIONAn assemblage of earth materials grouped together into a unit that is convenient for description or mapping.
GEO THERMAL WELLA well or wells drilled vertically in the ground that are water-filled, closed loop of one-inch high-density polyethylene (HDPE) pipe ferries heat between the earth and the house. Pipes descend four-to six-inch-diameter vertical wells—the number and depth depend on the house's site and size—before ganging together in a header and bringing lukewarm water in through the basement walls. Drillers backfill each hole with bentonite grout (or new enhanced grouts, engineered with fly ash) to maximize thermal conductivity. Pumps cycle water through the pipe loop to the heart of the system: the geothermal unit, which acts as furnace and air conditioner. This machine uses refrigerant and the temperate water from the underground pipes to heat or cool air. The air is then circulated through standard ductwork. With a device called a desuperheater, the unit uses excess heat to warm up domestic hot water at no added cost. The results feel the same as those from any standard forced-air HVAC system.
GROUTA stable impermeable bonding material which is capable of providing a watertight seal.
GROUTINGThe process of mixing and placing grout.
HYDRO FRACTURINGA process whereby water is pumped under high pressure into a well to fracture the surrounding rock thereby increasing the well yield.
MGLMassachusetts General Laws.
NEAT CEMENT GROUTA mixture consisting of one bag (94 pounds) of Portland cement (ASTM Standard C 150, Type I or API Standard 10, Class A) to not more than six gallons of clean water. Bentonite (API Standard 13A), up to 2% by weight of cement, shall be added to reduce shrinkage. Other additives, as described in ASTM Standard C494, may be used to increase fluidity and/or control setting time.
PERSONAn individual, corporation, company, association, trust, partnership.
PITLESS ADAPTERA commercially manufactured device which attaches to a well casing and provides watertight subsurface connections for suctions lines or pump discharge and allows vertical access to the interior of the well casing for installation or removal of the pump or pump appurtenances.
PRIVATE WATER SUPPLYA system that provides water for human consumption, if such system has less than 15 service connections and either 1) serves less than 25 individuals or 2) serves an average of 25 or more individuals for less than 60 days of the year.
PUBLIC WATER SYSTEMA system for the provision to the public of piped water for human consumption, if such system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days of the year. Such term includes 1) any collection, treatment, storage, and distribution facilities under control of the operator of such a system and used primarily in connection with such system, and 2) any collection or pretreatment storage facilities not under such control which are used primarily in connection with such system. A public water system is either a "community water system" or a "non-community water system."
PUMPING TESTA procedure used to determine the characteristics of a well and adjacent aquifer by installing and operating a pump.
REGISTERED WELL DRILLERAny person registered with the Department of Environmental Management/Division of Water Supply Protection to dig or drill wells in the Commonwealth of Massachusetts.
SAND CEMENT GROUTA mixture consisting of Portland cement (ASTM Standard C150, Type I or API Standard 10, Class A), sand, and water in the proportion of one part cement to three or four parts sand, by volume, and not more than six gallons of water per bag (94 pounds) of cement. Up to 5%, by weight, of bentonite (API Standard 13A) shall be added to reduce shrinkage.
SEPTIC TANKA watertight receptacle which receives the discharge of sewage from a building sewer and is designed and constructed so as to permit the retention of scum and sludge, digestion of the organic matter, and discharge of the liquid portion to a leaching facility.
STRUCTUREA combination of materials assembled at a fixed location to give support or shelter, such as a building, framework, retaining wall, fence, or the like.
SURFACE WATERWater that rests or flows on the surface of the Earth.
THERMOPLASTIC CASINGABS (acrylonitrile-butadiene-styrene), PVC (polyvinyl chloride) or SR (styrene rubber) casing specified in the most recent revision of ASTM Standard F480.
TREMIE PIPEA device, usually a small diameter pipe, that carries gravel pack or grouting materials to the bottom of a drill hole or boring and which allows pressure grouting from the bottom up without introduction of appreciable air pockets.
UNCONFINED AQUIFERAn aquifer in which the static water level does not rise above the top of the aquifer.
WATER BANWater restriction invoked by the Department of Environmental protection. Different phases of the water ban will invoke restricted use of watering.
[Added 9-11-2023]
WATER TABLEThe upper surface of the zone of saturation in an unconfined formation at which the pressure is atmospheric.
WATERTIGHTA condition which does not allow the entrance, passage or flow of water or other fluids under normal operating conditions.
WATERTIGHT CASINGA water well casing that has a wall thickness of 1/8 inch or more, has no seams or has welded seams, and has sections that can be joined together by watertight threads, by a weld, rubber gasket, or by cement that is not limestone or clay based that seals the well against the entrance of surface water into the groundwater.
WATERTIGHT CONSTRUCTIONCased and grouted construction through firm formations like clay or rock. Through granular material like sand or gravel, it means that the casing pipe is of approved quality and assembled watertight.
WELL DEVELOPMENTA procedure consisting of the removal of fine sand and drilling fluid from the water bearing sand, gravel, or rock materials opposite the well screen.
WELL VENTAn outlet at the upper end of a well casing or basement end of a non-pressure conduit to allow equalization of air pressure in a well but at the same time so constructed as to prevent entry of water and foreign material into the well.
YIELDThe quantity of water per unit of time which may flow or be pumped from a well under specified conditions.
ZONE OF SATURATIONThe zone below the water table in which all interstices are filled with groundwater.