Kingdom City Cross Connection Control: General Policy ordinance (§ 700.510)

A. Purpose.

1. 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 that could backflow through the service connection into the public potable water supply system.

2. Promote the elimination, containment, isolation, or control of existing cross connection, actual or potential, between the public and consumer's potable water systems and non-potable water systems, plumbing fixtures and industrial-process systems.

3. Provide for the maintenance of a continuing program of cross connection controls that 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 Kingdom City.

C. Policy.

1. The Water Purveyor shall reasonably interpret this Chapter. 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 the 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 shall be jointly responsible for preventing contamination of the water system within the consumer's premises.

3. If, in 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. Failure, refusal, or inability on the part of the consumer to provide protection shall constitute grounds for discontinuing water service to the premises until such protection has been provided.

D. Definitions. The following definitions shall apply in the interpretation and enforcement of this Chapter:

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. The air gap separation shall be at least double the diameter of the supply pipe measured vertically above the flood level rim of the vessel, but 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 the flow, of any foreign liquids, gases or substances into the distribution system of a public water supply.

BACKFLOW PREVENTION DEVICE: Any device, method or type of construction intended to prevent backflow into a potable water system.

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 fluids or other wastes to a degree that could create an actual hazard to the public health through poisoning or spread of diseases by exposure.

CROSS CONNECTION: Any physical link between a potable water supply and any other substance, fluid or source that makes contamination of the potable water supply possible 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.

a. HEALTH HAZARD Any condition, device or practice in the water supply system and its operation that could or may create a danger to the health and well-being of the consumer.

b. PLUMBING HAZARD A plumbing 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.

c. POLLUTION HAZARD An actual or potential threat to the physical properties of the water system or the potability of the public or the consumer's potable water system that would constitute a nuisance, be aesthetically objectionable or could cause damage to the system or its appurtenances, but would not be dangerous to health.

d. SYSTEM HAZARD 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 that would have a protracted effect on the quality of the potable water in the system.

INDUSTRIAL PROCESS SYSTEM: Any system containing a fluid or solution that may be chemically, biologically or otherwise contaminated or polluted in a form or concentration that constitutes a health, system, pollution 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.

POLLUTION

The presence of any foreign substance (organic, inorganic or biological) in water that tends to degrade its quality so as to constitute a hazard or impair the usefulness of the water to a degree that does not create an actual hazard to the public health, but does adversely and unreasonably affect the water for domestic use.

PUBLIC POTABLE WATER SYSTEM: Any publicly or privately owned water system supplying water to the general public that is satisfactory for drinking, culinary and domestic purposes and meets the requirements of the Missouri Department of Natural Resources.

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.

WATER PURVEYOR: The owner, operator or individual in responsible charge of a public water system.

E. Cross Connection Prohibited.

1. 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 systems may exist unless the actual 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.

2. No connections shall be installed or maintained whereby an auxiliary water supply may enter a public potable or consumer's water system unless the Water Purveyor and the Missouri Department of Natural Resources have approved the auxiliary water supply, the method of connection and the use of the supply.

3. 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.

F. Survey And Investigations.

1. The consumer's premises shall be open at all reasonable times to the Water Purveyor or his/her authorized representative to survey and investigate water use practices on 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.

2. Upon the Water Purveyor or his/her authorized representative's request, the consumer shall furnish information on water use practice within his/her premises.

3. The consumer shall 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 systems through which contaminants or pollutants could backflow into his/her or the public potable water system.

G. Type Of Protection Required. The type of protection depends upon the degree of hazard that exists:

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 systems 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 systems may be polluted with substances that could cause a pollution hazard not dangerous to health.

H. Where Protection Is Required.

1. An approved backflow device shall be installed on each service line to a water system serving the premises when, 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

2. An approved air gap separation or reduced pressure principle backflow prevention device shall be installed at the service connection or within any premises when, 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:

a. Premises having auxiliary water supply, unless the quality of the auxiliary supply is acceptable to the Water Purveyor and the Missouri Department of Natural Resources.

b. Premises having internal cross connections that are not correctable, or intricate plumbing arrangements that make it impractical to ascertain whether or not cross connections exist.

c. Premises upon which the 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.

d. Premises having a repeated history of cross connections being established or re- established.

e. Premises, which due to the nature of the enterprise therein, are subject to recurring modifications or expansions.

f. Premises upon which any substance is handled under pressure that would 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.

g. Premises upon which toxic or hazardous materials are handled in such a way that a serious health hazard may result if back siphon or backpressure should occur.

3. 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 at the following types of facilities to protect the public water supply and shall be installed at these facilities unless all hazardous conditions have been eliminated or corrected by other methods to the satisfaction of the Water Purveyor and the Missouri Department of Natural Resources.

a. Aircraft and missile plants.

b. Automotive plants.

c. Auxiliary water systems.

d. Beverage bottling plants.

e. Breweries.

f. Building complexes.

g. Canneries, packing houses, and reduction plants.

h. Car washing facilities.

i. Chemical, manufacturing, processing, compounding or treatment plants.

j. Chemically contaminated water systems.

k. Civil works.

l. Dairies and cold storage plants.

m. Film laboratories.

n. Fire protections systems.

o. Hazardous waste storage and disposal sites.

p. Hospital, mortuaries, clinics.

q. Irrigation and sprinkler systems.

r. Laundries and dye works.

s. Metal manufacturing, cleaning, processing.

t. Fabricating plants.

u. Oil and gas productions, storage or transmission properties.

v. Paper and paper products plants.

w. Plating plants.

x. Power plants.

y. Printing and publishing facilities.

z. Radioactive material processing plants or nuclear.

aa. Reactors.

bb. Research and analytical laboratories.

cc. Rubber plants-natural and synthetic.

dd. Sand and gravel plants.

ee. Schools and colleges.

ff. Sewage and storm drainage facilities-pumping stations.

gg. Water front faculties and industries.

hh. Zoological and horticultural garden.

I. Backflow Prevention Devices.

1. Any backflow prevention device shall be a model or a construction approved by the Water Purveyor and the Missouri Department of Natural Resources.

2. An approved air gap separation 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.

3. 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.

4. 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 Chapter as long as the Water Purveyor is assured they will satisfactorily protect the water system. Whenever the existing device is moved from its present location, 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 Chapter.

J. Installations.

1. Backflow prevention devices shall be installed at a location and in a manner approved by the Water Purveyor and shall be installed at the expense of the consumer.

2. 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 shall be installed prior to any other connection.

3. Backflow prevention devices shall be located in an area that is readily accessible for maintenance and testing, protected from freezing, and no part of the device shall be submerged or subject to flooding by any fluid.

K. Inspections And Maintenance.

1. At any premises on which backflow prevention devices are installed, the consumer shall have inspections, tests and overhauls made in accordance with the following schedule or more often if inspections indicate such a need.

a. Air gap separations shall be inspected at the time of installation and at least every twelve (12) months thereafter.

b. 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 after the initial installation.

c. 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 after the initial installation.

2. Inspections, tests and overhauls of backflow prevention devices shall be made at the expense of the consumer and shall be performed by the Water Purveyor or a State of Missouri Certified Backflow Prevention Device Tester.

3. Whenever backflow prevention devices are found to be defective, they shall be repaired or replaced without delay at the expense of the consumer.

4. The consumer shall maintain a complete record of each backflow prevention device from purchase to retirement. This record shall include a comprehensive listing that includes a record of all tests, inspections and repairs. Records of inspections, tests, repairs and overhauls shall not be removed or otherwise made inaccessible without specific authorization by the Water Purveyor.

5. Backflow prevention devices shall not be by-passed, made inoperative, removed or otherwise made ineffective without specific authorization by the Water Purveyor.

L. Violations.

1. The Water Purveyor shall deny or discontinue, after reasonable notice to the occupants thereof, the water service to any premises wherein:

a. Any backflow prevention device required by this Chapter is not installed, tested and maintained in a manner acceptable to the Water Purveyor, or

b. The backflow prevention device has been removed or by-passed, or

c. An unprotected cross connection exists on the premises.

2. Water service to the premises shall not be restored until the consumer has corrected or eliminated the conditions or defects to the satisfaction of the Water Purveyor.