City of Wentzville, MO
St. Charles County
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Table of Contents
Table of Contents
[R.O. 2006 §710.010; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
Purpose. The purpose of this Chapter is:
1. 
To establish regulations, requirements and guidelines for the protection of the public potable water supply from the introduction of actual and potential contaminants or pollutants should backflow occur.
2. 
To promote the elimination, containment, isolation or control of existing cross-connections, actual or potential, between the public or consumer's potable and non-potable water systems, plumbing fixtures and industrial process systems.
3. 
To provide for the maintenance of a continuing program of backflow prevention and cross-connection control which will systemically 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 Wentzville, Missouri, and the Water Purveyor.
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.
1. 
The Water Purveyor shall be primarily responsible for protection of the public potable water distribution system from backflow of contaminants and pollutants through the water service connection. The cooperation of all consumers is required to implement and maintain the program to control cross-connections and prevent backflow. The water consumer shall be responsible for preventing pollution of the public potable water supply.
2. 
If, in the judgment of the Water Purveyor or its authorized representative, cross-connection protection is required through either piping modification, abandonment or installation of a State-approved backflow prevention device, due notice shall be given to the consumer and the consumer shall immediately comply by providing the required protection at his own expense. Failure, refusal or inability on the part of the consumer to provide such protection shall constitute grounds for discontinuing water service to the consumer's premises until such time the required protection has been provided.
[R.O. 2006 §710.020; Ord. No. 2401 §§1 — 2, 9-28-2005]
In addition to the definitions set forth in Section 700.005, the following definitions shall apply in the interpretation and enforcement of this Chapter:
ABANDONMENT
To temporarily or permanently remove any auxiliary water service or cross-connection which could cause an actual or potential backflow hazard to the public potable water supply.
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 devices 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 potable water supply, that may be available in a 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.
BACKFLOW PREVENTION DEVICE
Any device, method or type of construction intended to prevent backflow into a potable water system.
CONSUMER
The owner or persons 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 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, 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.
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, Health (Class I): Any condition, device or practice in the water supply system and its operation which presents an actual or potential health risk to the consumers of the public potable water supply should backflow occur.
2. 
Hazard, Pollution (Class II): Any actual or potential threat to the physical properties of the public water system or to the potability of the consumer's water supply and which could constitute a nuisance or be aesthetically objectionable or could cause damage to the water system or its appurtenances but would not be dangerous to health.
INDUSTRIAL PROCESS 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, 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 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.
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 potable water system.
[R.O. 2006 §710.030; Ord. No. 2401 §§1 — 2, 9-28-2005]
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 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.
[R.O. 2006 §710.040; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
The consumer's premises shall be open at all reasonable times to the Water Purveyor or its authorized representative for the conduction of surveys and investigations of the 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 supply.
B. 
On request by the Water Purveyor or its authorized representative, the consumer shall furnish information on water use practices within such premises.
C. 
It shall be the responsibility of the water consumer to conduct periodic surveys of water use practices on such premises to determine whether there are actual or potential cross-connections to the water system through which contaminants or pollutants could backflow into the public potable water system.
[R.O. 2006 §710.050; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
The type of protection required by this Chapter shall depend on the degree of hazard which exists, as follows:
1. 
A State-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. 
A State-approved air-gap separation or State-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. 
A State-approved air-gap separation or State-approved reduced pressure principle backflow prevention device or a State-approved double-check valve assembly shall be installed where the public potable water system may be polluted with substances that could cause a hazard not dangerous to health.
[R.O. 2006 §710.060; Ord. No. 2401 §§1 — 2, 9-28-2005; Ord. No. 2734 §1, 6-13-2007; Ord. No. 2013-3303 §1, 6-12-2013]
A. 
A State-approved backflow prevention device shall be installed on each service line to the consumer's water system where, in the judgment of the Water Purveyor, its authorized representatives 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. 
A State-approved backflow prevention device shall be installed at each service connection within any premises where, in the judgment of the Water Purveyor, its authorized representatives 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 the materials stored on the premises would present an immediate, actual or potential hazard to health should backflow occur. The type and degree of protection required shall be commensurate with the degree of hazard.
C. 
A State-approved backflow prevention device shall be installed at all potable water service lines entering the premises of all retail, commercial, industrial and municipal facilities including but not limited to schools, churches, primary care facilities and hospitals and each retail plaza, as a whole; or each leased unit in any retail plaza where non-potable auxiliary water service connections are present including but not limited to food, laundry, medical, veterinarian, cosmetic, hair and animal grooming services. The type and degree of protection required shall be commensurate with the degree of hazard.
D. 
A State-approved backflow prevention device shall be installed at any non-potable auxiliary water service connection within any facility where food services and public water drinking fountains are present to include chemical feed systems, soap additive devices, carbonated fountain machines, ice machines, steam tables, laundry machines, boiler feed systems and chillers. The type and degree of protection required shall be commensurate with the degree of hazard.
E. 
A State-approved reduced pressure principle backflow prevention device shall be installed on all lawn irrigation and sprinkler systems and all fire protection systems with chemical additives present. A State-approved reduced pressure principle backflow prevention device or double-check valve assembly shall be installed on all fire protection systems without chemical additives present and all public non-potable auxiliary service lines to include those for swimming pools, water fountains and yard hydrants. The type and degree of protection required shall be commensurate with the degree of hazard.
F. 
A State-approved reduced pressure principle backflow prevention device shall be attached to any fire hydrant, at all times, being used for purposes other than fire protection or flushing. When flushing, a State-approved air-gap separation will be required at all times and will meet the requirements of this Chapter.
G. 
A commercial building within the City limits of Wentzville that has no "High Hazard" or "Types of Hazards" in the building as noted in the latest revision of the American Society of Sanitary Engineering (ASSE) listings of hazards can request a backflow waiver inspection be performed at that location. A completed site inspection confirming that no hazards exist will allow the Water Purveyor the discretion to grant a backflow protection waiver to the property owner. Through the waiver process the Water Purveyor assumes additional liability for water protection. With a waiver approval the grantee agrees to promptly notify the City of any changes in activities or facility modifications that could impact backflow requirements and consents to annual reinspections for compliance.
[R.O. 2006 §710.070; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
All backflow prevention devices required by this Chapter shall be of a model or construction approved by the Water Purveyor, its authorized representatives and the Missouri Department of Natural Resources.
B. 
All backflow prevention devices required by this Chapter shall be as follows:
1. 
A State-approved air-gap separation with at least twice the diameter of the supply pipe measured vertically above the top rim of the vessel the water is supplying but in no case less than one (1) inch will be required where mechanical backflow prevention is not installed.
2. 
At minimum, a State-approved reduced pressure principle backflow prevention device shall be installed where there is an actual or potential (Class I) health hazard to consumers of the public potable water supply should backflow occur.
3. 
At minimum, a State-approved double-check valve assembly backflow prevention device shall be installed where there is an actual or potential (Class II) pollution hazard which threatens to degrade the water quality of the public potable water supply should backflow occur.
C. 
Existing backflow prevention devices approved by the Water Purveyor at the time of installation and properly maintained shall, except for inspection, testing and maintenance requirements, be excluded from the requirements of this Chapter so long as the Water Purveyor is assured that such devices will satisfactorily protect the public potable water supply from contamination should backflow occur and that such device is on the current list of approved backflow prevention devices established by Missouri Department of Natural Resources. Whenever the existing device is removed, replaced or retired or requires more than minimum maintenance, or when the Water Purveyor finds that such device is unsuitable to protect the public potable water supply, it shall be replaced by a backflow prevention device that meets the requirements of this Chapter.
[R.O. 2006 §710.080; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
All State-approved backflow prevention devices required by this Chapter shall be installed at a location and in a manner approved by the Water Purveyor, its authorized representatives and the Missouri Department of Natural Resources and shall be installed on the consumer's water service line and located on the consumer's side of the water meter as close to the meter as reasonably possible and prior to any other water service connections.
B. 
All State-approved backflow prevention devices required by this Chapter for internal containment or isolation of a consumer's non-potable auxiliary water system shall be installed as close to the non-potable service connection as reasonably possible and prior to any bypass valves or service lines, unless the bypass service line is also protected with a State-approved backflow prevention device.
C. 
All State-approved backflow prevention devices required by this Chapter shall be installed by a State-certified backflow tester at the expense of the water consumer and shall be installed so as to be readily accessible for maintenance, testing and inspections.
[R.O. 2006 §710.090; Ord. No. 2401 §§1 — 2, 9-28-2005]
A. 
It shall be the duty of the water consumer at any premises on which backflow prevention devices required by this Chapter are installed to have permits, registrations, inspections, testing and maintenance made in accordance with the following procedures. It shall be the duty of the Water Purveyor and its authorized representatives to implement such a program to enforce these procedures.
1. 
Permits. All permanent State-approved backflow prevention device installations shall require a permit for each device installed and shall be acquired through the City of Wentzville Public Works Department before work is started. All permits shall be subject to a thirty dollar ($30.00) permit processing and inspection fee.
2. 
Registrations. All State-approved backflow prevention device installations, temporary or permanent, shall be registered with the Water Purveyor through the City of Wentzville Public Works Department before work is started. Permits, day tags and meters will not be issued without completed and signed registration forms for each installation. Registration forms will be made available by the Water Purveyor through the City of Wentzville Public Works Department.
3. 
Inspections. All State-approved backflow prevention device installations shall be inspected for proper installation, identification, maintenance and defects at the time of installation, after repairs and at least every twelve (12) months thereafter by a State-certified backflow tester, the Water Purveyor and its authorized representatives. The Water Purveyor and its authorized representatives shall implement an annual backflow inspection program and maintain a complete file of each State-approved backflow prevention device with records of all inspections, test reports and violations from installation to retirement.
4. 
Testing. All State-approved backflow prevention devices shall be tested by a State-certified backflow tester in accordance with standards and procedures established by the Water Purveyor and the Missouri Department of Natural Resources Public Drinking Water Program at the time of installation, after repairs and at least every twelve (12) months thereafter at the expense of the water consumer. Irrigation backflow devices and any device that is inactive for more than twenty-four (24) hours shall be tested at activation at the expense of the consumer. The results of such tests shall be submitted by the tester to the Water Purveyor through the City of Wentzville Public Works Department within thirty (30) days after making such test and a copy shall be provided to the consumer within that thirty (30) days. All test results shall be recorded, information completed and signed by the tester on a test report form approved by the Water Purveyor and the Missouri Department of Natural Resources. At the time of installation a permanent tag shall be attached to the backflow prevention device on which shall be recorded the tester's name, the tester's certification number and the date tested. Each subsequent test shall be recorded on this tag and remain attached to the device until such time the device is replaced or retired. Tags shall be made of materials sufficiently durable to withstand the environment in which the device is installed. Any devices not properly tagged, any unapproved or incomplete test report forms or those test report forms not submitted to the Water Purveyor within thirty (30) days will constitute a backflow prevention failure and will be treated as such by the Water Purveyor and its authorized representatives. The Water Purveyor, the backflow tester and the consumer shall maintain all records of backflow testing from installation to retirement.
5. 
Maintenance. All backflow prevention devices shall be maintained in proper working condition by the consumer. All repairs and overhauls shall be made at the expense of the consumer and shall be performed by a State-certified backflow device tester. All double check valve assemblies shall be dismantled, inspected internally, cleaned and repaired whenever needed and at least every three (3) years. All reduced pressure principle backflow prevention devices shall be dismantled, inspected internally, cleaned and repaired whenever needed and at least every five (5) years. Any backflow device found to be inoperative, defective or in need of repair will constitute a backflow failure and will be treated as such by the Water Purveyor, and its authorized representatives. The water consumer shall maintain all records of backflow device maintenance, overhauls and repairs from installation to retirement.
B. 
All State-approved backflow prevention devices shall not be bypassed, made inoperative, removed or abandoned without specific authorization from the Water Purveyor or its authorized representatives.
[R.O. 2006 §710.100; Ord. No. 2401 §§1 — 2, 9-28-2005]
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 Chapter is not installed, tested or 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 water consumer has corrected or eliminated such conditions or defects in conformance with this Chapter to the satisfaction of the Water Purveyor.
C. 
In the discharge of its duties, the Water Purveyor or its authorized representatives shall have the authority to enter at any reasonable hour any building, structure or premises in the jurisdiction to enforce the provisions of this Chapter. The Water Purveyor or its authorized representatives may discontinue water service if access is not granted.
D. 
Any person, firm or corporation who shall violate any provision of this Chapter or who shall fail to comply with any of the requirements thereof will be subject to penalties as follows:
1. 
No permit/registration penalties. Any work started prior to the acquisition of a permit or without registering the backflow prevention device will constitute a backflow prevention violation. A stop work order will be issued by the Water Purveyor and water service will be discontinued until such time the backflow prevention device is registered and a permit is acquired for a fee of one hundred dollars ($100.00). Any work completed without the acquisition of a permit or without registering the backflow prevention device will constitute a backflow prevention violation and the Water Purveyor will discontinue water service until such time the backflow prevention device is registered and a permit is acquired for a fee of one hundred dollars ($100.00). If work or water service is continued without permission of the Water Purveyor, the Water Purveyor or its authorized representatives shall issue the violator a citation at which the violator will be charged with a misdemeanor for tampering with City utilities punishable by a fine not to exceed five hundred dollars ($500.00).
2. 
Inspection/testing failure penalties. Any and all backflow prevention device failures made by the Water Purveyor will constitute a backflow prevention violation. The violator shall correct the failure within ten (10) working days of the violation to the satisfaction of the Water Purveyor or water service will be discontinued until such time the failure is corrected. A reinspection fee will be charged to the violator in the amount of thirty dollars ($30.00) for each inspection after the initial failure. If water service is discontinued, there will be a thirty dollar ($30.00) fee to restore water service. Any and all fees will be added to the violator's water bill. If water service is continued other than by the Water Purveyor, the Water Purveyor or its authorized representatives shall issue the violator a citation at which the violator will be charged with a misdemeanor for tampering with City utilities punishable by a fine not to exceed five hundred dollars ($500.00).