[Ord. No. 2600 §1, 2-4-2013]
A.
Purpose. The purpose of this Chapter 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 Chapter shall apply to all premises served
by the public potable water system of the City of St. Robert.
C.
Policy. This Chapter 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. 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. If, in the judgment 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.
[Ord. No. 2600 §2, 2-4-2013]
The definitions listed in this Section shall apply in the interpretation
and enforcement of this Chapter:
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 shutoff valves on both the upstream
and downstream end and the necessary test cock 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.
means 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 of 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.
Hazard, health. Any condition, device, or practice
in the water supply system and its operation which could create or
may create a danger to the health and well-being of the water consumer.
Hazard, plumbing. 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.
Hazard, pollutional. 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.
Hazard, system. 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.
[Ord. No. 2600 §3, 2-4-2013]
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.
[Ord. No. 2600 §4, 2-4-2013]
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.
[Ord. No. 2600 §5, 2-4-2013]
A.
The type
of protection required by this Chapter 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 pollution hazard not dangerous
to health.
[Ord. No. 2600 §6, 2-4-2013]
A.
An approved
backflow prevention assembly shall be installed on each service line
to a consumer's water system serving premises where, in the judgment
of the Water Purveyor or the Missouri Department of Natural Resources,
actual or potential hazards to the public potable water system exists.
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 judgment 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 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
re-established.
5.
Premises,
which due to the nature of the enterprises 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 back siphonage or backpressure should occur, a serious health hazard
may result.
C.
The types of facilities listed in Subsection (D) of this Section 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.
D.
Types
of facilities representing cross-connection hazards:
1.
Aircraft
and missile manufacturing plants;
2.
Automotive
plants including those plants which manufacture motorcycles, automobiles,
trucks, recreational vehicles, and construction and agricultural equipment;
3.
Potable
water dispensing stations which are served by a public water system;
4.
Beverage
bottling plants including dairies and breweries;
5.
Canneries,
packing houses and reduction plants;
6.
Car
washes;
7.
Chemical,
biological and radiological laboratories including those in high schools,
trade schools, colleges, universities and research institutions;
8.
Hospitals,
clinics, medical buildings, autopsy facilities, morgues, mortuaries
and other medical facilities;
9.
Metal
or plastic manufacturing, fabrication, cleaning, plating or processing
facilities;
10.
Plants
manufacturing paper and paper products;
11.
Plants
manufacturing, refining, compounding or processing fertilizer, film,
herbicides, natural or synthetic rubber, pesticides, petroleum or
petroleum products, pharmaceuticals, radiological materials or any
chemical which would be a contaminant to the public water system;
12.
Commercial
facilities that use herbicides, pesticides, fertilizers or any chemical
which would be a contaminant to the public water system;
13.
Plants
processing, blending or refining animal, vegetable or mineral oils;
14.
Commercial
laundries and dye works;
15.
Sewage,
storm water and industrial waste treatment plants and pumping stations;
16.
Waterfront
facilities including piers, docks, marinas and shipyards;
17.
Industrial
facilities which recycle water;
18.
Restricted
or classified facilities or other facilities closed to the supplier
of water or the department;
19.
Fire
sprinkler systems using any chemical additives;
20.
Auxiliary
water systems;
21.
Irrigation
systems with facilities for injection of pesticides, herbicides or
other chemicals or with provisions for creating back pressure;
22.
Portable
tanks for transporting water taken from a public water system; and
23.
Facilities
which have pumped or re-pressurized cooling or heating systems that
are served by a public water system, including all boiler systems.
[Ord. No. 2600 §7, 2-4-2013]
A.
Any backflow prevention assembly required to protect the facilities listed in Section 735.060(D) 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.
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 Chapter 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 Chapter.
[Ord. No. 2600 §8, 2-4-2013]
A.
Backflow
prevention assemblies required by this Chapter 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 reduce pressure
principle backflow prevention assembly shall be located where it will
be submerged or subject to flooding by any fluid.
[Ord. No. 2600 §9, 2-4-2013]
A.
It shall
be the duty of the consumer at any premises on which backflow prevention
assemblies required by this Chapter 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 Chapter 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.
[Ord. No. 2600 §10, 2-4-2013]
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 Chapter 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 an 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 Chapter to the satisfaction of the Water Purveyor.
