[Ord. No. 12-5 §705.280, 6-11-2012]
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
back flow 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 systems 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 Hallsville.
C. Policy. 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.
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 within the consumer's premises.
If, in the judgment of the Water Purveyor or his/her 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/her 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. 12-5 §705.290, 6-11-2012]
The following definitions shall apply in the interpretation
and enforcement of this Article:
AIR-GAP SEPARATION
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.
AUXILIARY WATER SUPPLY
Any water source or system, other than the public water supply,
that may be available in the building or premises.
BACKFLOW
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.
CONSUMER
The owner or person in control of any premises supplied by
or in any manner connected to a public water system.
CONTAINMENT
Protection of the public water supply by installing a cross-connection
control device or air-gap separation on the main service line to a
facility,
CONTAMINATION
An impairment of the quality of the water by sewage, process
liquids 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.
CROSS-CONNECTION
Any physical link between a potable water supply and any
other substance, liquid 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.
HAZARD, DEGREE OF
An evaluation of the potential risk to public health and
the adverse effect of the hazard upon the potable water system.
1.
HAZARD, HEALTHAny 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.
2.
HAZARD, PLUMBINGA 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 device.
3.
HAZARD, POLLUTIONALAn 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.
4.
HAZARD, SYSTEMAn 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.
INDUSTRIAL PROCESS SYSTEM
Any system containing a liquid 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.
ISOLATION
Protection of a facility service line by installing a cross-connection
control device or air-gap separation on an individual fixture, appurtenance
or system.
OPERATION AND MAINTENANCE
All expenditures during the useful life of the system for
materials, labor, utilities and other items which are necessary for
managing and maintaining the system to achieve the capacity and performance
for which system was designed and constructed.
POLLUTION
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.
PUBLIC POTABLE WATER SYSTEM
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.
REPLACEMENT
Expenditures for obtaining and installing equipment, accessories
or appurtenances which are necessary during the useful life of the
system to maintain the capacity and performance for which such works
were designed and constructed. The term "operation and maintenance"
includes replacement.
RESIDENTIAL USER
Any user of the City's water system whose lot, parcel of
real estate or building is used for domestic dwelling purposes only.
SERVICE CONNECTION
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.
SHALL
Is mandatory; "may" is permissive.
USEFUL LIFE
The estimated period during which the treatment works will
be operated.
USER CHARGE
That portion of the total water service charge which is levied
in a proportional and adequate manner for the cost of operation, maintenance
and replacement of the water system.
WATER METER
A water volume measuring and recording device, furnished
and/or installed by the City of Hallsville or furnished and/or installed
by a user and approved by the City of Hallsville.
WATER PURVEYOR
The owner, operator or individual in responsible charge of
a public water system.
WATER SYSTEM
Any devices and systems for the storage, treatment, recycling,
transmission and distribution of water. These include transmission
and distribution lines, individual systems, pumping, power and other
equipment and their appurtenances; extensions, improvements, remodeling,
additions and alterations thereof; elements essential to provide a
reliable water supply such as standby treatment units and may works,
including site acquisitions of land, that will be part of the treatment
process.
[Ord. No. 12-5 §705.300, 6-11-2012]
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.
D. When a public water system becomes available, customers that connect
must physically disconnect from the existing private system (well)
in accordance with the City's cross-connection prevention ordinance.
The well shall then be properly plugged in accordance with guidelines
established by the Missouri Department of Natural Resources Division
of Geology and Land Survey (DGLS) and outlined in State Regulation
10 CSR 23 — 3.110, as amended, unless the owner wants to keep
it functional for uses other than providing drinking water. A well
may only be kept if it remains physically disconnected from the public
water supply's distribution system, has a functional pump, is connected
to an electrical service and is pumped at least once in a twelve-month
period. Upon connecting to the public water system, the appropriate
DNR Regional Office shall be notified, in writing, that the connection(s)
have been made.
[Ord. No. 12-5 §705.310, 6-11-2012]
A. The consumer's premises shall be open at all reasonable times to
the Water Purveyor or his/her 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 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/her authorized representative,
the consumer shall furnish information on water use practices within
his/her premises.
C. It shall be the responsibility of the water consumer to conduct periodic
surveys of water use practices on his/her premises to determine whether
there are actual or potential cross-connections to his/her water system
through which contaminants or pollutants could backflow into his/her
or the public potable water system.
[Ord. No. 12-5 §705.320, 6-11-2012]
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 device 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 device 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. 12-5 §705.330, 6-11-2012]
A. An approved backflow prevention device shall be installed on each
service line to a consumer's water system service 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 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
device 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 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 inspections 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 back-siphonage or back pressure should occur,
a serious health hazard may result.
C. The following types of facilities fall into one (1) or more of the
categories of premises where an approved air-gap separation or reduced-pressure-principle
backflow-prevention device 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.
Aircraft and missile plants.
4.
Beverage bottling plants.
7.
Canneries, packing houses and reduction plants.
9.
Chemical manufacturing, processing, compounding or treatment
plants.
10.
Chemically contaminated water system.
12.
Dairies and cold storage plants.
15.
Hazardous waste storage and disposal sites.
16.
Hospital, mortuaries, clinics.
17.
Irrigation and sprinkler systems.
19.
Metal manufacturing, cleaning, processing and fabricating plants.
20.
Oil and gas production, storage or transmission properties.
21.
Paper and paper products plants.
24.
Printing and publishing facilities.
25.
Radioactive material processing plants or nuclear reactors.
26.
Research and analytical laboratories.
27.
Rubber plants — natural and synthetic.
30.
Sewage and storm drainage facilities — pumping stations.
31.
Waterfront facilities and industries.
32.
Zoological and horticultural gardens.
[Ord. No. 12-5 §705.340, 6-11-2012]
A. A backflow prevention device required by this Article 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 device shall be approved by the Water Purveyor
and shall appear on the current list of approved backflow prevention
devices established by the Missouri Department of Natural Resources.
B. Existing backflow prevention devices 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 device 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 device meeting the requirements of this Article.
[Ord. No. 12-5 §705.350, 6-11-2012]
A. Backflow prevention devices 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 devices 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 devices shall be located so as to be readily
accessible for maintenance and testing, protected from freezing, and
where no part of the device will be submerged or subject to flooding
by any liquid.
[Ord. No. 12-5 §705.360, 6-11-2012]
A. It shall be the duty of the consumer at any premises on which backflow
prevention devices required by this Article are installed to have
inspections, 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. They shall be dismantled, inspected internally,
cleaned and repaired whenever needed and at least every thirty (30)
months.
3.
Reduced-pressure principle backflow-prevention devices shall
be inspected and tested for tightness at the time of installation
and at least every twelve (12) months thereafter. They shall be dismantled,
inspected internally, cleaned and repaired whenever needed and at
least every five (5) years.
B. Inspections, tests and overhauls of backflow-prevention devices shall
be made at the expense of the water consumer and shall be performed
by the Water Purveyor or a State of Missouri certified backflow-prevention
device tester.
C. Whenever backflow-prevention devices 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
device 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 devices shall not be bypassed, made inoperative,
removed or otherwise made ineffective without specific authorization
by the Water Purveyor.
[Ord. No. 12-5 §705.370, 6-11-2012]
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 device 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 device 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 Article and to the satisfaction of the Water Purveyor.