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A. The Consumer's Premises shall be open at all reasonable times to the Water Purveyor, for the conduction of surveys and investigations of water use practices within the Consumer's Premises.
B. On request by the Water Purveyor, the Consumer shall furnish information regarding the piping system or water use within the Consumer's Premises. The Consumer's Premise shall be open at all reasonable times to the Water Purveyor for the verification of information submitted.
C. Paragraph (A) of this section does not relieve the Consumer of the responsibility for conducting, or causing to be conducted, periodic surveys of water use practices on his Premises to determine whether there are actual or potential Cross-Connections in the Consumer Water System through which contaminants or pollutants could Backflow into the Consumer's or the public potable water system.
D. It is the responsibility of the Consumer to prevent Backflow in the public water system by ensuring that:
1. All Cross-Connections shall be approved, removed or protected to the satisfaction of the Water Purveyor; and
2. Backflow Prevention Devices shall be installed and maintained in accordance with these Rules and Regulations.
A. An Approved Backflow Prevention Device shall be installed on each Service Line to a Consumer Water System serving his Premises where, in the judgment of the Water Purveyor, actual or potential hazards to the public potable water system exist.
B. An Approved Backflow Prevention Device or method shall be installed on each Service Line to a Consumer Water System serving properties where any of the following conditions exist:
1. Properties having, or having had, access to a second source of water;
2. Premises on which any substance is handled in such a fashion as to create an actual or potential hazard to the public potable water system. This shall include Premises having sources or systems containing Process Fluids or waters originating from the public potable water system, which are no longer under the sanitary control of the Water Purveyor;
3. Premises having internal Cross-Connections that, in the judgment of the Water Purveyor, are not correctable; or intricate plumbing arrangements which make it impractical to determine whether or not Cross-Connections exist;
4. Premises where, because of security requirements or other prohibitions or restrictions, it is impossible or impractical to make a complete Cross-Connection survey;
5. Premises having a repeated history of Cross-Connections being established or reestablished;
6. Others specified by the Director.
A. The type of prevention required shall depend on the Degree of Hazard. The Degree of Hazard and appropriate Backflow prevention shall be determined by the Water Purveyor.
1. Severe Health Hazard classification shall mean an actual or potential threat of Contamination of the water system that could be lethal. An Approved fixed Air Gap Separation shall be installed and maintained in accordance with this regulation.
2. Health Hazard classification shall mean an actual or potential threat of Contamination of a physical or toxic nature that would be a danger to health. An Approved fixed Air Gap Separation or an Approved Reduced Pressure Principle Backflow Prevention Device shall be installed and maintained in accordance with this regulation.
3. System Hazard classification shall mean actual or potential threat of damage to the physical properties of the water system. An Approved fixed Air Gap Separation or an Approved Reduced Pressure Principle Backflow Prevention Device shall be installed and maintained in accordance with this regulation.
4. Pollution Hazard classification shall mean an actual or potential threat to the potability of the water system, but which would not constitute a Health Hazard as defined. An Approved Air Gap Separation, an Approved Reduced Pressure Principle Backflow Prevention Assembly or an Approved double-check back-flow assembly shall be installed and maintained in accordance with this regulation.
B. Type of Backflow Protection Required - Domestic Water Services:
An Approved Backflow Prevention Device of the type designated shall be installed on each domestic water Service Connection to the following types of facilities unless the Water Purveyor determines that no real or potential health, pollution, or System Hazard to the public water system exists. This list is presented as a guideline and should not be construed as being complete.
Backflow Prevention Assembly Requirement Key:
AG - Air Gap Separation
RP - Reduced Pressure Principle Backflow Prevention Assembly
DC - Double Check Valve Backflow Prevention Device
Minimum Type of Protection | |
INDUSTRIAL | RP (as defined by Department) |
COMMERCIAL | Backflow protection at the Service Connection shall match the highest level of water use hazard on site. However, if there is only one water use hazard on site and in the opinion of the Department the makeup piping to this hazard can be permanently isolated, an Isolation Backflow Prevention Device approved by the Department for the hazard can be used in lieu of one at the Service Connection. |
RESIDENTIAL | RP |
With lawn irrigation or direct plumbing pool (if no potential for back-pressure exists, and there is only one water use hazard on site and in the opinion of the Department the make up piping to this hazard can be permanently isolated, an Isolation Backflow Prevention Device approved by the Department for the hazard can be used in lieu of one at the Service Connection.) | |
If water uses exist other than domestic | |
Where second source of water is available to the property |
An Approved Backflow Prevention Device of the type designated shall be installed on each domestic Service Connection to the following types of facilities regardless of the types of on-site water use hazards:
Hospitals | RP |
Mortuaries | RP |
Medical clinic, office, etc | RP |
Nursing & convalescent homes | RP |
Laboratories | RP |
Sewage treatment plants & pumping stations | RP |
Car Washes | RP |
Lawn Irrigation | RP |
Veterinary Establishments | RP |
Film Laboratory or Processing Plant | RP |
Commercial Leased Property | RP |
Marine facilities | RP |
Chemical plants | RP |
Beverage bottling plants | RP |
Laundry facilities | RP |
Metal manufacturing | RP |
Plating plants | RP |
Restaurants | RP |
Schools | RP |
In addition to and including the facilities listed above, an Approved Backflow Prevention Device of the type designated shall be installed on each domestic water Service Connection to any Premises containing the following actual or potential hazards:
Minimum Type of Protection | |
Premises having a secondary source of water not connected to the public water system | RP |
Premises having a water storage tank, reservoir, pond, or similar appurtenance | RP |
Premises having a steam boiler, cooling system, or hot water heating system where chemical water conditioners are used | RP |
Premises having submerged inlets to equipment | RP |
C. Type of Backflow Protection Required - Fire Services: Shall be subject to these Rules and Regulations.
A. Any Backflow Prevention Device required by these Rules and Regulations, shall be of a model or construction approved by the Water Purveyor and shall comply with the following:
1. An Air Gap Separation, to be approved, shall be at least twice the diameter of the supply pipe as measured vertically above the top rim of the vessel; but shall in no case be less than one (1) inch;
2. Any Double Check Valve Assembly or Reduced Pressure Principal Backflow Prevention Device required by this regulation shall be approved by the Water Purveyor and appear on the most recent list of Approved Backflow Prevention Devices published by the OEPA;
3. An Interchangeable Connection, to be approved, shall be either a swing type connector or a four-way valve of the lubricated plug type that operates through a mechanism which unseats the plug, turns it ninety degrees, and reseats the plug. Four-way valves shall not be used as stop valves but must have separate stop valves on each pipe connected to the four-way valve, and shall have no piping connected. The threads or flange on this port shall be destroyed so that a connection cannot be made.
4. All Backflow Prevention Devices shall include properly located test cocks and manufacturer approved tightly closing shut-off valves.
5. The requirements of OAC 3745-95-06(A).
B. Existing Backflow Prevention Devices, approved by the Director or the Director of the OEPA at the time of installation and properly maintained, shall, except for inspection, testing and maintenance requirements, be excluded from the requirement of section (A) above, providing the Water Purveyor is assured that they will satisfactorily protect the public potable water system. Whenever the existing device is moved from the present location or requires more than minimum maintenance, or when the Water Purveyor finds that the maintenance of the device constitutes a hazard to health, the device shall be replaced by a Backflow Prevention Device meeting the requirements of these Rules and Regulations.
A. Backflow Prevention Devices required by these Rules and Regulations shall be installed at a location in a manner approved by the Water Purveyor at the expense of the water Consumer. For detailed instruction refer to the Division of Water Distribution's Standard Detail Drawing - Backflow Prevention Setting and Installation Rules.
B. The installation of Backflow Prevention Devices in the City service territory must be by a plumbing contractor licensed by the City and an approved Backflow Prevention Device installer.
C. Backflow Prevention Devices shall be installed on the Customer's side of the water meter as close to the meter as reasonably practical and prior to any other connection.
D. Reduced Pressure Principle Backflow Prevention Assemblies must be installed above ground level or floor level, whichever is higher.
A. It shall be the duty of the Consumer at any Premises on which Backflow Prevention Devices required by these Rules and Regulations are installed to have inspections, tests, and repairs made in accordance with the following schedule, or more often where inspections indicate a need:
1. Fixed Air Gap Separation 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 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 five (5) years.
4. Pressure vacuum breakers shall be inspected and tested for capability to prevent back-siphonage at the time of installation and at least every twelve (12) months thereafter and rebuilt whenever needed. The assembly shall be routinely inspected at least every three (3) months by the Owner for visible conditions which would or could prevent the normal functioning of the assembly.
5. Interchangeable Connections and low pressure cut-offs shall be inspected at the time of installation and at least every twelve (12) months thereafter.
B. Inspections, tests and rebuilding of Backflow Prevention Devices shall be made at the expense of the water Consumer and shall be performed by a State of Ohio, Department of Health, Certified Backflow Tester who must also be registered with the Division of Water Distribution. The Department may charge a registration fee.
C. Whenever Backflow Prevention Devices required by these Rules and Regulations are found to be defective, they shall be repaired or replaced without delay at the expense of the Owner.
D. The water Consumer must maintain a complete record of each Backflow Prevention Device from purchase to retirement. This shall consist of a comprehensive listing that includes a record of all tests, inspections, repairs and rebuilds. Records of inspections, tests, repairs and rebuilds shall be submitted to the Director.
E. Backflow Prevention Devices shall not be bypassed, made inoperative, removed or otherwise made ineffective without specific authorization by the Director.
A. Fire suppression systems containing booster pumps installed after the effective date of OAC 3745-95-07 shall include a minimum pressure-sustaining valve, which shall be set to close, should the supply pressure drop below 10 psi. Where a booster pump has been installed prior to the effective date of OAC 3745-95-07 on the Service Line to or within any Premises, such pump shall be equipped with a low pressure cut-off device designed to shut-off the booster pump when the pressure in the Service Line of the suction side of the pump drops to ten (10) pounds per square inch gauge or less.
B. It shall be the duty of the water Consumer to maintain the minimum pressure sustaining valve or low pressure cut-off device in proper working order and to certify to the Water Purveyor, at least one a year, that the device is operating properly.
A. The Department may deny or discontinue water service to any Premises, after reasonable notice to the occupants, where any Backflow Prevention Device required by these Rules and Regulations is not installed, tested and maintained in a manner acceptable to the Director; or if it is found that the Backflow Prevention Device has been removed or by-passed, or if an unprotected Cross-Connection exists on the Premises, or if a minimum pressure sustaining valve or low pressure cut-off required by these Rules and Regulations is not installed and maintained in working order or for any other violation of the foregoing regulations regarding backflow prevention.
B. Water service to such Premises shall not be restored until the Consumer has corrected or eliminated the conditions or defects in these Rules and Regulations and to the satisfaction of the Director.
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