Haw. Code R. § 11-20-40 - Criteria and procedures for public water systems using point-of-entry devices
(a) Supplier of
water may use point-of-entry devices to comply with MCLs only if they meet all
the requirements of this section.
(b)
The supplier of water has the responsibility to operate and
maintain the point-of-entry treatment system.
(c) The supplier of water shall develop and
obtain the director's approval for a monitoring plan before point-of-entry
devices are installed for compliance. Under the plan approved by the director,
point-of-entry devices shall provide health protection equivalent to central
water treatment. "Equivalent" means that the water would meet all primary
drinking water regulations and would be of acceptable quality similar to water
distributed by a well-operated central treatment plant. In addition to the
VOCs, monitoring shall include physical measurements and observations such as
total flow treated and mechanical condition of the treatment equipment.
(d) Effective technology shall be
properly applied under a plan approved by the director and the microbiological
safety of the water shall be maintained.
(1)
The supplier of water shall provide certification of performance, field
testing, and, if not included in the certification process, a rigorous
engineering design review of the point-of-entry devices to the
director.
(2) The design and
application of the point-of-entry devices shall consider the tendency for
increase in heterotrophic bacteria concentrations in water treated with
activated carbon. It may be necessary to use frequent backwashing,
post-contactor disinfection, and Heterotrophic Plate Count monitoring to ensure
that the microbiological safety of the water is not compromised.
(e) All consumers shall be
protected. Every building connected to the public water system shall have a
point-of-entry device installed, maintained, and adequately monitored. Every
building shall be subject to treatment and monitoring, and that the rights and
responsibilities of the public water system customer shall convey with title
upon sale of property.
Notes
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