The requirements for registration as a limited well casing extension contractor W-5 shall be a contractor license to perform plumbing and piping work pursuant to chapter 393 of the Connecticut General Statutes. Such registration as a limited well casing extension contractor W-5 permits the registrant to perform well casing extension, repair and maintenance work. The applicant shall demonstrate knowledge of well casing extension, and repair and maintenance work by passing a written examination conducted pursuant to section 20-333 of the Connecticut General Statutes. The W-5 registrant's ability to repair shall be limited solely to the well casing extension and shall exclude any other parts of a well.
Conn. Agencies Regs. § 25-129-5