(a) Qualified employees of a bottler shall collect samples of water from each approved source used by such bottler not less than once annually to test for contaminants for which allowable levels have been established in accordance with 21 C.F.R. § 165.110 and regulations adopted pursuant to sections 21a-150 to 21a-150j, inclusive, and not less than once every three years to test for contaminants for which monitoring is required pursuant to sections 21a-150 to 21a-150j, inclusive, but for which no allowable level has been established. Qualified employees of an approved laboratory shall analyze such samples to determine whether such source complies with the provisions of sections 21a-150 to 21a-150j, inclusive, any regulation adopted pursuant to said sections and any allowable contaminant level set forth in 21 C.F.R. § 165.110. Microbiological analysis shall be conducted not less than once each calendar quarter if the source of such water is other than a public water supply and shall be in addition to any sampling and analysis conducted by any government agency or laboratory.

(b) Qualified employees of a bottler shall collect samples of water from any source used by such bottler when such bottler knows or has reason to believe that water obtained from such source contains an unregulated contaminant in an amount which may adversely affect the health or welfare of the public. Qualified employees of an approved laboratory shall analyze such samples periodically to determine whether water obtained from any such source is safe for public consumption or use.

(c) On or before January 1, 2022, and annually thereafter, qualified employees of a bottler shall (1) collect samples of water from each approved source that is located in the state, that has been inspected and approved by the Department of Public Health pursuant to subdivision (2) of subsection (a) of § 21a-150a and is used by such bottler, prior to any treatment, to test for perfluoroalkyl substances and other unregulated contaminants, and (2) have such samples analyzed by an environmental laboratory registered by the Department of Public Health pursuant to § 19a-29a that has the Environmental Protection Agency approved certification to conduct such analysis. As used in this subsection, “unregulated contaminant” means a contaminant for which the Commissioner of Public Health, pursuant to § 22a-471, has set a level at which such contaminant creates or can reasonably be expected to create an unacceptable risk of injury to the health or safety of persons drinking such source of water.