Ga. Comp. R. & Regs. R. 391-3-5-.10 - Distribution System
(1)
Design for Flow and Pressure. The water distribution system must
be designed and the water lines sufficiently sized to furnish at all times the
instantaneous demand flow of water required and to maintain at all times a
pressure of twenty (20) pounds per square inch at each service connection in
the distribution system under all conditions of flow.
(2)
Looped Lines. Distribution
lines must be looped whenever possible.
(3)
Metering. Beginning January
1, 1998, all new services connected to community and non-transient
non-community water systems shall be metered, unless specifically directed
otherwise by the Director. For existing water systems, metering of existing
services shall be performed when required by the Director.
(4)
Prevent Contamination. It is
the responsibility of the supplier of water to maintain the distribution system
to prevent contamination of the drinking water and to provide the required
pressure and flow at all times.
(5)
Minimum Pipe Size. The minimum size water main shall be two (2)
inches in nominal diameter. The Division may allow for a departure in sizing
provided it is justified by hydraulic analysis and future water use of the area
to be served and such departures will be considered only in special
circumstances.
(6)
Lines in
Contaminated Areas. Water lines must not be installed in contaminated
areas such as sanitary landfill or dump areas.
(7)
Sewer Line Contact. No water
main or pipe shall pass through or come into contact with any part of a sewer
or sewer manhole.
(8)
Minimum
Cover. The minimum recommended cover for water distribution mains or
lines shall be twenty-four (24) inches.
(9)
Installation Requirements.
All newly installed distribution mains and appurtenances shall be flushed,
pressure tested and disinfected.
(10)
Lead Free.
(a) For purposes of this rule, the term "lead
free" means:
1. not containing more than 0.2
percent lead when used with respect to solder and flux; and
2. not more than a weighted average of 0.25
percent lead when used with respect to the wetted surfaces of pipes, pipe
fittings, plumbing fittings, and fixtures.
(b) The weighted average lead content of a
pipe, pipe fitting, plumbing fitting, or fixture shall be calculated by using
the following formula: For each wetted component, the percentage of lead in the
component shall be multiplied by the ratio of the wetted surface area of that
component to the total wetted surface area of the entire product to arrive at
the weighted percentage of lead of the component. The weighted percentage of
lead of each wetted component shall be added together, and the sum of these
weighted percentages shall constitute the weighted average lead content of the
product. The lead content of the material used to produce wetted components
shall be used to determine compliance with paragraph (a). For lead content of
materials that are provided as a range, the maximum content of the range shall
be used.
(c) When used with respect
to plumbing fittings and fixtures intended by the manufacturer to dispense
water for human ingestion refers to fittings and fixtures that are in
compliance with standards established in accordance with
42 U.S.C.
300g-6(e).
(d) This term does not apply to leaded joints
necessary for the repair of cast iron pipes.
(11)
Notification of Lead-containing
Service Lines. Suppliers of water shall identify and report to the
Division any lead pipe and/or lead service connections known to be installed in
the distribution system. Suppliers shall adopt a local plumbing code that
requires use of lead free solder for plumbing.
(12)
Infrastructure Security.
Public water distribution network and its related components must be protected
to prevent unauthorized tampering.
Notes
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