Alaska Administrative Code › Title 18 - Environmental Conservation › Chapter 80 - Drinking Water › Article 3 - Standards, Monitoring, Variances, and Exemptions › 18 AAC 80.360 - Use of noncentralized treatment devices

Current through May 31, 2024
(a) The owner of a
				community water system or non-transient non-community water system may use a
				point-of-entry treatment device to meet the MCLs set under
				18 AAC 80.300(b) (1) and (2)(A) - (B), if the device meets the
				requirements of this section.
(b)
				The owner must obtain department approval to use a point-of-entry treatment
				device. To seek approval, the owner must submit plans for the device. Before
				deciding whether to approve those plans, the department will require adequate
				certification of performance, field testing, and a sealed engineering design
				review of a treatment device. The design and application of a device must
				address the tendency for an increase in heterotrophic bacteria concentrations
				in water treated with activated carbon. As conditions for its approval, the
				department will require frequent back-washing, post-contactor disinfection, and
				heterotrophic plate count monitoring to ensure that the microbiological safety
				of the water is not compromised, if the department determines that those
				conditions serve the interests of public health.
(c) The owner shall develop and obtain
				department approval for a monitoring plan before installing the point-of-entry
				treatment device as a means of achieving compliance. Under an approved plan,
				each device must provide health protection equivalent to central water
				treatment designed to treat the contaminant of interest. For purposes of this
				subsection, a device provides equivalent health protection if the water would
				meet all MCLs set under
				18 AAC 80.300(b),
				and would be of acceptable quality, similar to water distributed by a properly
				operated and maintained central water treatment works.
(d) The operator shall properly operate and
				maintain the point-of-entry treatment device. In addition to the monitoring
				required under this chapter, the operator shall monitor the operation and
				maintenance of the device, including physical measurements and observations
				such as total flow treated and the mechanical condition of the treatment
				device.
(e) Under an approved plan
				for a point-of-entry treatment device, the owner shall ensure that the
				treatment is effective and properly applied and that the microbiological safety
				of the water is maintained. The owner may not use a point-of-entry treatment
				device to achieve compliance with an MCL or treatment technique requirement for
				a microbial contaminant.
(f) The
				owner shall ensure that consumers are protected and shall install, maintain,
				and adequately monitor a treatment device in each building connected to the
				system. The department will require the owner to provide assurance that each
				building is subject to treatment and monitoring, and that the rights of the
				public water system's customer are conveyed with the title upon sale of the
				building.
(g) The department will
				require the owner of a community water system or non-transient non-community
				water system to use point-of-entry devices to avoid an unreasonable risk to
				health as a condition for granting an exemption under
				18 AAC 80.375 from the
				requirements for lead and copper under
				40 C.F.R.
				141.83 (Source Water Treatment Requirements)
				or 40 C.F.R.
				141.84 (Lead Service Line Replacement
				Requirements), both adopted by reference in
				18 AAC 80.010(a).
				In requiring the use of a point-of-entry device under this subsection, the
				department will allow only a device that does not cause increased corrosion of
				lead- and copper-bearing materials located between the device and the tap that
				could increase contaminant levels at the tap.
Authority:
AS
					 46.03.020
AS 46.03.050
AS 46.03.070
AS 46.03.710
AS
					 46.03.720