Disinfecting a potable water storage tank per awwa standards can be difficult. San antonio water system standard specifications for. The standard also includes disinfection procedures for underwater inspection andor cleaning of potablewaterstorage facilities but does not describe the technical aspects of underwater inspection andor cleaning. Three different disinfection methods are recommended, each of which can result in. Cleaning, disinfecting, and flushing drinking water storage tanks at small. Cleaning, disinfecting, and flushing drinking water. Awwa c awwa c awwa c disinfection of water package. Standard for disinfecting water mains or an equivalent. New or repaired water mains united states environmental. This standard describes methods of disinfecting newly. People helping people build a safer world guidance for the. Disinfection and bacteriological sampling of mains and. The conventional practice in water main disinfection is summarized in ansi awwa standard c651 92. The placing of calcium hypochlorite granules during construction is optional.
Awwa c651 05 disinfecting water mains pdf this document is an american water works association awwa standard. Awwa c605, underground installation of polyvinyl chloride pvc pressure pipe and fittings for water d. Ansi awwa standard c651 92 suggests a temporary flushingtesting connection that includes. When the pressure test, leakage test, chlorinat ion or bacteriological and plate count tests. This standard presents essential procedures for the disinfection of new and repaired potable water mains.
Procedure for the disinfection of water linessystems established by ucsb environmental health and safety. Disinfecting water mains disinsinfecting waterfecting water m. Ansi procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of ansi approval. Awwa standard c65114 disinfecting water main and shall meet all health department standards. Disinfection procedure for water distribution lines environmental. Disinfection methods as prescribed by the health authority or water purveyor having jurisdiction should be followed. A required pipeline testing and disinfection plan shall be submitted by the.
Standard specifications disinfecting pipelines revised january 2017 33 01 10. Awwa standard for disinfecting water mains jun 1, 2005 ansiawwa c65105. Awwa standard for disinfecting water mains jun 1, 2005 ansiawwa c651 05. This procedure uses a risk management approach to categorize watermain breaks based on the potential for contamination. Guidelines for water and sewer facilities the city of santa ana. Inspecting all materials to be used to ensure the integrity. The digital edition is available for immediate download, and the print copy will be mailed to you.
The intent of the program is to ensure compliance with the methods and procedures outlined in ansi awwa standard c651 92 and meet the bacteriological standards. Refer to awwa c651, for number of taps required to obtain the. Standard for disinfecting water mains or an equivalent procedure. Awwa c65211 disinfection of waterstorage facilities. Water main must be disinfected in accordance with awwa c651 14 standard, except where these procedures establish a higher standard. Awwa c651 has undergone major changes to take into account new technologies and the. Yll foreword this foreword is for information only and is not a part of ansi awwa c651. Awwa ansi c651 05 disinfecting water mains first standard approved sept. Where necessary, c65105, state, local, or provincial regulatory agencies should be c651 5 to determine special provisions for the disposal of heavily chlorinated water. C6105, the procedures of this section must be observed to ensure that a water main and its appurtenances have been thoroughly cleaned for the final disinfection. Water main testing and disinfection procedures final. System users will be advised of disinfection and advised to flush their lateral. This standard presents essential procedures for the disinfection of.
This procedure includes all underground and above ground potable water lines for new construction projects and major renovation projects. The major revision in this edition of ansi awwa c651 99 includes the following. Preliminary flushing of pipe required by awwa c651. The current industry practice for the disinfection of underground potable water. Inspecting all materials to be used to ensure the integrity of the materials. This section does not include disinfecting procedures for water storage. Change ministry as the equivalent procedure which replaces ansi awwa c651 standard for disinfecting water mains with respect to the cleaning, tapping, maintenance and repair of. Distribution system disinfection american water college. The basic disinfection procedure consists of the following steps. Otherwise, information in the forward of awwa standard c651.
Coshem, the american water works association awwa, and the association of state drinking water administrators asdwa. For new mains and mains depressurized for repairs, the water system must follow disinfection procedures specified in awwa standard c651 92. This document is an american water works association awwa standard. If you have any questions about this procedure please.
Awwa c651 pdf this document is an american water works association awwa standard. Chlorination dechlorination procedures a new twist to an old technologyrobert gordhamer. If samples do not demonstrate satisfactory results, the disinfection procedure shall be repeated until. The method of disinfection shall be the continuous feed method as per awwa c651. This standard presents essential procedures for the disinfection. If no such authority having jurisdiction provides these procedures then the procedures found in the american water works association standard awwa c651, awwa c652 or the disinfection. All such connections shall be installed with a ul approved backflow. It is not a this foreword is for information only and is not a part of awwa c. Section includes requirements for chlorinati on and dechlorination procedures for water.
Awwa standard c654, disinfection of wells awwa standard c651 14, disinfecting water mains awwa standard c65211, disinfection of waterstorage facilities these awwa standards assume the well, storage tank, or other component is isolated from the rest of the water system during disinfection. Water main disinfection record, 2sided form side 1 measured chlorine concentration in superchlorinated disinfectant charged to main time that charge was complete beginning of 24 hour. Burlingame, and robert gordhamer revision of awwa c65114. The system will be disinfected following awwa standard c651 92. Awwa c652 disinfection of water storage facilities. Use continuous feed method or tablet method for chlorination following awwa c651. Awwa c 207 standard for steel pipe flanges for waterworks service sizes 4 inches through 144 inches. Testing and disinfection of all pressure piping for leakage as specified. Concerns of regulated community regarding awwa c651 3 province wide variation in disinfection practices and confirmation. Disinfection procedure for water distribution lines. Standard for disinfecting water mains, awwa c651 92, p.
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