2010 JANUARY - Laserfiche WebLink

S. "Pollution" means the presence of any for- eign substance (organic, inorganic, or biological) in wa- ter which tends to degrade its quality so as to constitute a hazard or impair the usefulness or quality of the water to a degree which does not create an actual hazard to the public health but which does adversely and unreasona- bly affect such waters for domestic use. T. "Reduced pressure principle device" means an assembly of two independently operating approved check valves with an automatically operating differential relief valve between the two check valves, tightly clos- ing shut -off valves on either side of the check valves, plus properly located test cocks for the testing of the check and relief valves. The entire assembly shall meet the design and performance specifications and approval of a recognized and city- approved testing agency for backflow prevention assemblies. The device shall oper- ate to maintain the pressure in the zone between the two check valves at a level less than the pressure on the pub- lic water supply side of the device. At cessation of the normal flow the pressure between the two check valves shall be less than the pressure on the public water supply side of the device. In case of leakage of either of the check valves the differential relief valve shall operate to maintain the reduced pressure in the zone between the check valves by discharging to the atmosphere. When the inlet pressure is two pounds per square inch or less, the relief valve shall open to the atmosphere. To be ap- proved, these devices must be readily accessible for in- line maintenance and testing and be installed in a loca- tion where no part of the device will be submerged. U. "Water, nonpotable" means water which is not safe for human consumption or which is of ques- tionable potability. V. "Water, potable" means any water which, according to recognized standards, is safe for human consumption. W. `Water service connections" means the ter- minal end of a service connection from the public pota- ble water system; i.e., where the water purveyor loses jurisdiction and sanitary control over the water at its point of delivery to the customer's water system. If a meter is installed at the end of the service connection, then the service connection shall mean the downstream end of the meter. There should be no unprotected take- offs from the service line ahead of any meter or back - flow prevention device located at the point of delivery to the customer's water system. "Service connection" shall also include water service connection from a fire hy- drant and all other temporary or emergency water ser- vice connections from the public potable water system. 387 14.16.040 X. "Water, used" means any water supplied by a water purveyor from a public potable water system to a consumer's water system after it has passed through the point of delivery and is no longer under the sanitary control of the water purveyor. (Ord. 2000 § I, 2009; prior code § 2- 16.49) 14.16.040 Requirements —Water system. A. The water system shall be considered as made up of two parts: the utility system and the cus- tomer system. 13. The utility system shall consist of the source facilities and the distribution system, and shall include all those facilities of the water system under the com- plete control of the utility, up to the point where the cus- tomer's system begins. C. The source shall include all components of the facilities utilized in the production, treatment, stor- age, and delivery of water to the distribution system. D. The distribution system shall include the network of conduits used for the delivery of water from the source to the customer's system. E. The customer's system shall include those parts of the facilities beyond the termination of the util- ity distribution system which are utilized in conveying utility - delivered domestic water to points of use. (Prior code § 2 -16.50 (1)) 14.16.050 Policy. A. No water service connection to any premises or from a lire hydrant or any other temporary or emer- gency water service connection from the public potable water system shall be installed or maintained by the wa- ter purveyor unless the water supply is protected as re- quired by state laws and regulations and this chapter. Service of water to any premises shall be discontinued by the water purveyor if a backtlow prevention device required by this chapter is not installed, tested and main- tained, or if it is found that a backflow prevention device has been removed, bypassed or if an unprotected cross - connection exists on the premises. Service will not be restored until such conditions or defects are corrected. Temporary, intermittent and emergency users of the water system shall be considered as consumers on prem- ises for the purposes of this chapter and shall be subject to the same cross - connection control requirements as water service connections to any premises. B. The customer's system should be open for inspection at all reasonable times to authorized represen- tatives of the operations services director to determine whether cross- connections or other structural or sanitary hazards, including violations of these regulations, exist. (Pleasanton Stipp. No. 3, I -10)