[CC 1984 § 41.200; Ord. No. 2003-200, 2-2003]
A.
Purpose. The purpose of this Article is:
1.
To protect the public potable water supply
from contamination or pollution by containing within the consumer's
internal distribution system or private water system contaminants
or pollutants which could backflow through the service connection
into the public potable water supply system.
2.
To promote the elimination, containment, isolation,
or control of existing cross connections, actual or potential, between
the public or consumer's potable water system and non-potable water
systems, plumbing fixtures, and industrial-process systems.
3.
To provide for the maintenance of a continuing
program of cross connection control which will systematically and
effectively prevent the contamination or pollution of all potable
water systems.
B.
Application. This Article shall apply to all premises
served by the public potable water system of the City of Novinger.
C.
Policy.
1.
This Article will be reasonably interpreted
by the water purveyor. It is the water purveyor's intent to recognize
the varying degrees of hazard and to apply the principle that the
degree of protection shall be commensurate with the degree of hazard.
2.
The water purveyor shall be primarily responsible
for protection of the public potable water distribution system from
contamination or pollution due to backflow or contaminants or pollutants
through the water service connection. The cooperation of all consumers
is required to implement and maintain the program to control cross
connections. The water purveyor and consumer are jointly responsible
for preventing contamination of the water system.
3.
If, in the judgement of the water purveyor
or his authorized representative, cross connection protection is required
through either piping modification or installation of an approved
backflow prevention device, due notice shall be given to the consumer.
The consumer shall immediately comply by providing the required protection
at his own expense; and failure, refusal, or inability on the part
of the consumer to provide such protection shall constitute grounds
for discontinuing water service to the premises until such protection
has been provided.
[CC 1984 § 41.210; Ord. No. 2003-200, 2-2003]
The following definitions shall apply in the interpretation
and enforcement of this Article:
The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or faucet supplying water
to a tank, plumbing fixture, or other device and the overflow level
rim of the receptacle, and shall be at least double the diameter of
the supply pipe measured vertically above the flood level rim of the
vessel, but in no case less than one (1) inch.
Any water source or system, other than the public water supply,
that may be available in the building or premises.
The flow other than the intended direction of flow, of any
foreign liquids, gases, or substances into the distribution system
of a public water supply.
Any double check valve or reduced pressure principle backflow
preventer having resilient-seated shut-off valves on both the upstream
and downstream end and the necessary test cocks as integral parts
of the assembly.
The owner or person in control of any premises supplied by
or in any manner connected to a public water system.
Protection of the public water supply by installing a backflow
prevention assembly or air gap separation on the main service line
to a facility.
An impairment of the quality of the water by sewage, process
fluids, or other wastes to a degree which could create an actual hazard
to the public health through poisoning or through spread of disease
by exposure.
Any physical link between a potable water supply and any
other substance, fluid, or source, which makes possible contamination
of the potable water supply due to the reversal flow of the water
in the piping or distribution system.
An evaluation of the potential risk to public health and
the adverse effect of the hazard upon the potable water system.
Any condition, device or practice in the water supply system
and its operation which would create or may create a danger to the
health and well-being of the water consumer.
A plumbing type cross connection in a consumer's potable
water system that has not been properly protected by a vacuum breaker,
air gap separation or backflow prevention assembly.
An actual or potential threat to the physical properties
of the water system or to the potability of the public or the consumer's
potable water system but which would constitute a nuisance or be aesthetically
objectionable or could cause damage to the system or its appurtenances,
but would not be dangerous to health.
An actual or potential threat of severe damage to the physical
properties of the public potable water system or the consumer's potable
water system, or of a pollution or contamination which would have
a protracted effect on the quality of the potable water in the system.
Any system containing a fluid or solution, which may be chemically,
biologically, or otherwise contaminated or polluted in a form or concentration
such as would constitute a health, system, pollutional, or plumbing
hazard if introduced into a potable water supply.
Protection of a facility's internal plumbing system by installing
a backflow prevention assembly, air gap separation, or other backflow
prevention device on an individual fixture, appurtenance, or system.
The presence of any foreign substance (organic, inorganic,
or biological) in water which tends to degrade its quality so as to
constitute a hazard or impair the usefulness 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.
Any publicly or privately owned water system supplying water
to the general public which is satisfactory for drinking, culinary,
and domestic purposes and meets the requirements of the Missouri Department
of Natural Resources.
The terminal end of a service line from the public water
system. If a meter is installed at the end of the service, then the
service connection means the downstream end of the meter.
The owner, operator, or individual in responsible charge
of a public water system.
[CC 1984 § 41.220; Ord. No. 2003-200, 2-2003]
A.
No water service connection shall be installed or maintained
to any premises where actual or potential cross connections to the
public potable or consumer's water system may exist unless such actual
or potential cross connections are abated or controlled to the satisfaction
of the water purveyor, and as required by the laws and regulations
of the Missouri Department of Natural Resources.
B.
No connection shall be installed or maintained whereby
an auxiliary water supply may enter a public potable or consumer's
water system unless such auxiliary water supply and the method of
connection and use of such supply shall have been approved by the
water purveyor and the Missouri Department of Natural Resources.
C.
No water service connection shall be installed or maintained
to any premises in which the plumbing system, facilities, and fixtures
have not been constructed and installed using acceptable plumbing
practices considered by the water purveyor as necessary for the protection
of health and safety.
[CC 1984 § 41.230; Ord. No. 2003-200, 2-2003]
A.
The consumer's premises shall be open at all reasonable
times to the water purveyor, or his authorized representative, for
the conduction of surveys and investigations of water use practices
within the consumer's premises to determine whether there are actual
or potential cross connections to the consumer's water system through
which contaminants or pollutants could backflow into the public potable
water system.
B.
On request by the water purveyor or his authorized
representative, the consumer shall furnish information on water use
practices within his premises.
C.
It shall be the responsibility of the water consumer
to conduct periodic surveys of water use practices on his premises
to determine whether there are actual or potential cross connections
to his water system through which contaminants or pollutants could
backflow into his or the public potable water system.
[CC 1984 § 41.240; Ord. No. 2003-200, 2-2003]
A.
The type of protection required by this Article shall
depend on the degree of hazard which exists, as follows:
1.
An approved air gap separation shall be installed
where the public potable water system may be contaminated with substances
that could cause a severe health hazard.
2.
An approved air gap separation or an approved
reduced pressure principle backflow prevention assembly shall be installed
where the public potable water system may be contaminated with a substance
that could cause a system or health hazard.
3.
An approved air gap separation or an approved
reduced pressure principle backflow prevention assembly or an approved
double check valve assembly shall be installed where the public potable
water system may be polluted with substances that could cause a pollutional
hazard not dangerous to health.
[CC 1984 § 41.250; Ord. No. 2003-200, 2-2003]
A.
An approved backflow prevention assembly shall be installed
on each service line to a consumer's water system serving premises
where, in the judgement of the water purveyor or the Missouri Department
of Natural Resources, actual or potential hazards to the public potable
water system exist. The type and degree of protection required shall
be commensurate with the degree of hazard.
B.
An approved air gap separation or reduced pressure
principle backflow prevention assembly shall be installed at the service
connection or within any premises where, in the judgement of the water
purveyor or the Missouri Department of Natural Resources, the nature
and extent of activities on the premises, or the materials used in
connection with the activities, or materials stored on the premises,
would present an immediate and dangerous hazard to health should a
cross connection occur, even though such cross connection may not
exist at the time the backflow prevention device is required to be
installed. This includes but is not limited to the following situations:
1.
Premises having an auxiliary water supply,
unless the quality of the auxiliary supply is acceptable to the water
purveyor and the Missouri Department of Natural Resources.
2.
Premises having internal cross connections
that are not correctable, or intricate plumbing arrangements which
make it impractical to ascertain whether or not cross connections
exist.
3.
Premises where entry is restricted so that
inspection for cross connections cannot be made with sufficient frequency
or at sufficiently short notice to assure the cross connections do
not exist.
4.
Premises having a repeated history of cross
connections being established or reestablished.
5.
Premises, which due to the nature of the enterprise
therein, are subject to recurring modification or expansion.
6.
Premises on which any substance is handled
under pressure so as to permit entry into the public water supply,
or where a cross connection could reasonably be expected to occur.
This shall include the handling of process waters and cooling waters.
7.
Premises where materials of a toxic or hazardous
nature are handled such that if backsiphonage or backpressure should
occur, a serious health hazard may result.
C.
The types of facilities listed in Appendix A[1] fall into one (1) or more of the categories of premises where an approved air gap separation
or reduced pressure principle backflow prevention assembly is required
by the water purveyor and the Missouri Department of Natural Resources
to protect the public water supply and must be installed at these
facilities unless all hazardous or potentially hazardous conditions
have been eliminated or corrected by other methods to the satisfaction
of the water purveyor and the Missouri Department of Natural Resources.
[1]
Editor's Note: Appendix A is included as an attachment to this chapter.
[CC 1984 § 41.260; Ord. No. 2003-200, 2-2003]
A.
Any backflow prevention assembly required to protect
the facilities listed in Appendix A[1] shall be of a model or construction approved by the water
purveyor and the Missouri Department of Natural Resources.
1.
Air gap separation to be approved shall be
at least twice the diameter of the supply pipe, measured vertically
above the top rim of the vessel, but in no case less than one (1)
inch.
2.
A double check valve assembly or a reduced
pressure principle backflow prevention assembly shall be approved
by the water purveyor, and shall appear on the current "list of approved
backflow prevention assemblies" established by the Missouri Department
of Natural Resources.
[1]
Editor's Note: Appendix A is included as an attachment to this chapter.
B.
Existing backflow prevention assemblies approved by
the water purveyor at the time of installation and properly maintained
shall, except for inspection and maintenance requirements, be excluded
from the requirements of this Article so long as the water purveyor
is assured that they will satisfactorily protect the water system.
Whenever the existing assembly is moved from its present location,
or requires more than minimum maintenance, or when the water purveyor
finds that the maintenance constitutes a hazard to health, the unit
shall be replaced by a backflow prevention assembly meeting the requirements
of this Article.
[CC 1984 § 41.270; Ord. No. 2003-200, 2-2003]
A.
Backflow prevention assemblies required by this Article
shall be installed at a location and in a manner approved by the water
purveyor and shall be installed at the expense of the water consumer.
B.
Backflow prevention assemblies installed on the service
line to the consumer's water system shall be located on the consumer's
side of the water meter, as close to the meter as is reasonably practical,
and prior to any other connection.
C.
Backflow prevention assemblies shall be located so
as to be readily accessible for maintenance and testing, protected
from freezing. No reduced pressure principle backflow prevention assembly
shall be located where it will be submerged or subject to flooding
by any fluid.
[CC 1984 § 41.280; Ord. No. 2003-200, 2-2003]
A.
It shall be the duty of the consumer at any premises
on which backflow prevention assemblies required by this Article are
installed to have inspection, tests, and overhauls made in accordance
with the following schedule or more often where inspections indicate
a need.
1.
Air gap separations shall be inspected at
the time of installation and at least every twelve (12) months thereafter.
2.
Double check valve assemblies shall be inspected
and tested for tightness at the time of installation and at least
every twelve (12) months thereafter.
3.
Reduced pressure principle backflow prevention
assemblies shall be inspected and tested for tightness at the time
of installation and at least every twelve (12) months thereafter.
B.
Inspections, tests, and overhauls of backflow prevention
assemblies shall be made at the expense of the water consumer and
shall be performed by a State of Missouri certified backflow prevention
assembly tester.
C.
Whenever backflow prevention assemblies required by
this Article are found to be defective, they shall be repaired or
replaced at the expense of the consumer without delay.
D.
The water consumer must maintain a complete record
of each backflow prevention assembly from purchase to retirement.
This shall include a comprehensive listing that includes a record
of all tests, inspections, and repairs. Records of inspections, tests,
repairs, and overhauls shall be made available to the water purveyor
upon request.
E.
Backflow prevention assemblies shall not be bypassed,
made inoperative, removed, or otherwise made ineffective.
[CC 1984 § 41.290; Ord. No. 2003-200, 2-2003]
A.
The water purveyor shall deny or discontinue, after
reasonable notice to the occupants thereof, the water service to any
premises wherein any backflow prevention assembly required by this
Article is not installed, tested, and maintained in a manner acceptable
to the water purveyor, or if it is found that the backflow prevention
assembly has been removed or bypassed, or if any unprotected cross
connection exists on the premises.
B.
Water service to such premises shall not be restored
until the consumer has corrected or eliminated such conditions or
defects in conformance with this Article to the satisfaction of the
water purveyor.
