This Part
1 shall apply to all premises served by the public water supply system of the Borough of Springdale.
The public water supplier and the consumer have the joint responsibility
for protection of the public water supply system from contamination
due to backflow of contaminants through the water service connection.
If, in the judgment of the public water supplier or his authorized
representative, an approved backflow prevention device is required,
the supplier shall give notice to the consumer to install such approved
backflow prevention device at each service connection to his premises.
The consumer shall immediately install such approved device or devices
at his own expense, and failure, refusal or inability on the part
of the consumer to install such device or devices shall constitute
grounds for discontinuing water service to the premises until such
device or devices have been installed.
For the purpose of this section, the following words shall have
the meaning indicated unless clearly indicated otherwise in the text:
AIR GAP SEPARATION
The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or faucet supplying potable
water to a tank, plumbing fixture, or other device and the flood level
rim of the receptacle. The differential distance shall be at least
double the diameter (2 x D) of the supply pipe, measured vertically,
above the top of the rim of the vessel. In no case shall the air gap
be less than one inch.
APPROVED
A backflow prevention device or method has been accepted
by the public water supplier as suitable for the proposed use.
ATMOSPHERIC VACUUM BREAKER (also known as the "non-pressure-type
vacuum breaker")
A device containing a shutoff valve followed by a valve body
containing a float check, a check seat and an air inlet port. When
the shutoff valve is open, the flow of water causes the float to close
the air inlet port. When the shutoff valve is closed, the float falls
and forms a check valve against backsiphonage and, at the same time,
opens the air inlet port.
AUXILIARY WATER SYSTEM
Any water source or system on the premises of or available
to the customer except connections to other approved community water
supply systems.
BACKFLOW
A flow condition, induced by a differential in pressure,
that causes the flow of water or mixtures of water and other liquids,
gases or other substances into the distribution pipes of a potable
water supply system from a source other than its intended source.
BACKFLOW PREVENTER
A device or other means which will prevent the backflow of
water or liquids of questionable quality into the public water supply
system.
BACKSIPHONAGE
The backflow of water or mixture of water and other liquids,
gases or other substances from a plumbing fixture or other customer
source into a public water supply system main due to a temporary negative
or subatmospheric pressure within the public water supply system.
CONSUMER
The owner or person in control of any premises supplied by
or in any manner connected to a public water supply system.
CONSUMER'S WATER SYSTEM
Any water system located on the consumer's premises
supplied by or in any manner connected to a public water supply system.
A household plumbing system is considered to be a consumer's
water system.
CONTAINMENT
Cross-connection control which isolates the customer's
entire facility from the public water supply system so as to provide
the protection necessary to prevent contamination of the public water
supply in the event of backflow from the customer's facility.
CONTAMINATION
The degradation of the quality of the drinking water by wastewaters,
processed fluids, or any water of a quality less than accepted drinking
water quality to a degree which would create an actual hazard to the
public health through poisoning or through the spread of disease.
CROSS-CONNECTION
An arrangement allowing either a direct or indirect connection
through which backflow, including backsiphonage, can occur between
the drinking water in a public water system and a system containing
a source or potential source of contamination.
DEGREE OF HAZARD
An evaluation of the potential risk to health and the adverse
effect upon the public water supply system.
DOUBLE CHECK VALVE ASSEMBLY
An assembly composed of two single, independently acting
check valves, including tightly closing shutoff valves located at
each end of the assembly and suitable connections for testing the
water tightness of each check valve.
HEALTH HAZARD
Any condition, device or practice in a water system or its
operation that creates or may create a danger to the health and well-being
of its users. The word "severe," as used to qualify "health hazard,"
means a hazard to the health of the user that could reasonably be
expected to result in significant morbidity or death.
PERSON
Any individual, partnership, association, company, corporation,
municipality, municipal authority, political subdivision or any agency
of federal or state government. The term includes the officers, employees
and agents of any partnership, association, company, corporation,
municipality, municipal authority, political subdivision or any agency
of federal or state government.
POLLUTION
The presence in water of any foreign substance that tends
to degrade its quality so as to constitute a hazard or impair the
usefulness or quality of the water to a degree which does not create
an actual hazard to the public health but which does adversely and
unreasonably affect such waters for domestic use.
POTABLE WATER
Water which is satisfactory for drinking, culinary and domestic
purposes and meets the requirements of the Department of Environmental
Protection.
PROCESS FLUIDS
Any fluid or solution which may be chemically, biologically
or otherwise contaminated or polluted in a form or concentration such
as would constitute a health, pollutional, or system hazard if introduced
into the public or consumer's water system. This includes, but
is not limited to:
A.
Polluted or contaminated waters;
C.
Used waters originating from the public water system which may
have deteriorated in sanitary quality;
E.
Contaminated natural waters taken from wells, lakes, streams,
or irrigation systems;
F.
Chemicals in solution or suspension;
G.
Oils, gasses, acids, alkalis, and other liquid and gaseous fluids
used in industrial or other processes, or for firefighting purposes;
and
H.
Heating system waters from boilers or heat pumps.
REDUCED PRESSURE ZONE (RPZ) DEVICE
A minimum of two independently acting check valves, together
with an automatically operated pressure differential relief valve
located between the two check valves. During normal flow and at the
cessation of normal flow, the pressure between these two checks shall
be less than the supply pressure. In case of leakage of either check
valve, the differential relief valve, by discharging to the atmosphere,
shall operate to maintain the pressure between the checks at less
than the supply pressure. The unit must include tightly closing shutoff
valves located at each end of the device, and each device shall be
fitted with properly located test cocks.
SERVICE CONNECTION
The terminal end of a service line from the public water
supply system. If a meter is installed at the end of the service,
then the "service connection" means the downstream end of the meter.
SYSTEM HAZARD
A condition posing an actual or potential threat of damage
to the physical properties of the public water system or the consumer's
potable water supply.
The type of protection required under §
472-8 of this Part
1 shall depend on the degree of hazard which exists, as follows:
A. An approved air gap separation ("air gap") shall be installed where
the public water supply system may be contaminated with substances
that are dangerous to the public health and could cause a severe health
hazard.
B. An approved air gap separation ("air gap") or approved reduced pressure
zone backflow prevention device ("RPZD") shall be installed where
the public water system may be contaminated with a substance that
could cause a system or health hazard.
C. An approved air gap separation ("air gap") or an approved reduced
pressure zone backflow prevention device ("RPZD") or an approved double
check valve assembly ("DCVA") shall be installed where the public
water supply system may be polluted with substances that would be
objectionable but not dangerous to health.
D. The approved backflow prevention devices indicated in Exhibit A shall be installed in the facilities listed in Exhibit A, as provided in §
472-8C of this Part
1.