Conn. Gen. Stat. § 25-130

Before commencing work on any water-supply well, the registered well driller shall apply to the board for a permit to drill such well. A fee of five dollars shall accompany such application. If the water-supply well conforms to the Well Drilling Code, as from time to time amended, the board shall issue such permit which shall contain the name and address of the well driller, the date of issuance and the specific location of the well. The driller shall then submit the permit with a fee to be determined by the legislative body of a town, city or borough or the board of a district department of health, as the case may be, to the local director of health or his agent who shall sign such permit if said proposed water-supply well conforms to the Public Health Code. No water-supply well shall be drilled until such a permit is issued and countersigned and until the driller has informed his client, in writing, that well drilling is subject to regulation by the Department of Consumer Protection and that complaints may be directed to that department.