Ariz. Admin. Code § R18-4-218 - Criteria and Procedures for Public Water Systems Using Point-of-entry or Point-of-use Treatment Devices
A.
A water supplier may use a point-of-entry (POE) or point-of-use (POU) treatment
technology to achieve compliance with a MCL or treatment technique if the water
supplier meets the requirements of this Section.
B. A public water system may use a POE or POU
treatment device to achieve compliance with a MCL, if the treatment device:
1. Is not used to achieve compliance with an
MCL or treatment technique for a microbial contaminant or an indicator for a
microbial contaminant, in accordance with
42
U.S.C. 300g - 1(b)(4)(E)(ii)
(2007);
2. Is listed in 40 CFR 141
as an acceptable compliance technology for the applicable
contaminant;
3. Is certified
against the applicable NSF/ANSI Standards;
4. Is owned, controlled and maintained by a
public water system or by a person under contract with the public water system
to ensure proper operation, maintenance, and compliance with MCLs or treatment
techniques; and
5. Is equipped with
mechanical warnings to ensure that customers are automatically notified of
recommended system maintenance and or operational problems. This performance
indication device shall provide notice to the end user at a defined moment in
time without shutting off the POE or POU device.
C. Prior to installing a POE or POU treatment
device, a public water system shall obtain the Department's written approval of
a POE or POU operation and maintenance (O & M) plan. A public water system
shall submit an O & M plan to the Department that ensures proper long-term
operation, maintenance, and monitoring of the POE or POU treatment devices. An
O & M plan shall ensure that:
1. The POE
or POU treatment device provides health protection equivalent to the health
protection provided by centralized water treatment. "Equivalent" means that
water treated by the POE or POU treatment device meets all national primary
drinking water regulations.
2. A
residential building, or a nonresidential building that uses water for human
consumption, that is connected to the public water system has a POE or POU
treatment device that is installed, operated, maintained, and monitored in a
manner that assures continuous compliance with the MCLs, treatment techniques,
and other requirements of this Chapter.
3. Multi-unit residential and nonresidential
buildings utilizing POU treatment devices to achieve compliance with this
Chapter have a sufficient number of POU devices installed to provide adequate
potable water for all residents, employees, and customers.
4. The rights and responsibilities of persons
served by the public water system are conveyed with the title upon the sale of
property containing a POU treatment device, including but not limited to the
following:
a. The public water system owns
and is responsible for maintaining a POU treatment device that is installed to
meet the requirements of this Section; and
b. Persons served by public water systems
must grant public water system employees reasonable access to POU treatment
devices, so that the devices can be properly maintained. Public water systems
may discontinue water service to a customer who refuses to allow public water
system employees to enter the customer's home or business to inspect and
maintain POU treatment devices.
Notes
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