R.C.S.A. § 25-128-39
Diameter, depth, and yield of water supply wells
Cite as Conn. Agencies Regs. § 25-128-39
Wells shall be of adequate diameter and depth to be capable of yielding the quantity
of water required by the user. For the use of an individual household, a bedrock well
of six (6) inches in diameter shall be satisfactory when it is capable of yielding:
(a) five (5) gallons per minute and has a storage available of seventy-five (75) gallons
or has a water column depth of one hundred (100) feet, whichever is greater;
(b) three and one half (3 1/2) gallons per minute and has a storage available of one hundred
fifty (150) gallons or has a water column depth of one hundred fifty (150) feet, whichever
is greater;
(c) two gallons (2) per minute and has a storage available of two hundred twenty-five
(225) gallons or has a water column depth of two hundred (200) feet, whichever is
greater;
(d) one gallon per minute and has a storage available of four hundred (400) gallons or
has a water column depth of three hundred seventy-five (375) feet, whichever is greater;
(e) one half (1/2) gallon per minute and has a water column depth of four hundred fifty
(450) feet or has a storage available of six hundred (600) gallons, whichever is greater.
(f) storage may be provided using combinations of hydropneumatic tanks and/or non-pressurized
tanks with booster pumps.
(g) wells yielding less than one half (1/2) gallons per minute shall be pump tested for
at least eighteen hours (18) to prove the well yield. It is not recommended that a
well with less than one half (1/2) gallon be used as the only supply for an individual
household.
In the event, however, that in the opinion of the Board, special or unusual geological,
hydrological, or other circumstances shall exist in the construction of any well,
the Board may determine the minimum requirements of diameter, depth, and yield for
the well.