Section 11-20-23 - Requirements for an exemption(a) The director may exempt any public water system from any MCL requirement or any treatment technique requirement, or from both, of an applicable state primary drinking water regulation upon a finding that:(1) Due to compelling factors (which may include economic factors), the public water system is unable to comply with such contaminant level or treatment technique requirement;(2) The public water system was in operation on the effective date of such contaminant level or treatment technique requirement; and(3) The granting of the exemption will not result in an unreasonable risk to health.(b) The director will not exempt any surface water system or a ground water system under the direct influence of surface water from the requirements to provide disinfection for the water entering the distribution system.(c) The director will not grant any exemptions to the MCL for total coliform. [Eff 12/26/81; comp 3/7/92; am and comp 1/2/93; comp 12/15/94; comp 10/13/97; comp 9/7/99; comp 11/30/02; comp 12/16/05; comp 11/28/11; comp MAY 02 2014 ] (Auth: HRS §§ 340E-2, 340E-9) (Imp: HRS §§ 340E-2, 340E-3, 340E-9; 42 U.S.C. §§ 300g-1, 300g-2, 300g-5; 40 C.F.R. Parts 141, 142, § 141.4, § 142.10, § 142.20 )