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AWWA: American Water Works Association

AWWA, the American Water Works Association, is a nonprofit organization that develops and publishes standards for the proper treatment, transportation and storage of water, as well as other related fields. Headquartered in Denver, United States, AWWA standards reach over 100 countries, with approximately 55,000 members located around the world. AWWA is the leading, largest and most knowledgeable global association in its field. AWWA also serves as the administrator for the U.S. TAG (United States Technical Advisory Group) to ISO/TC 224 (International Organization for Standardization/Technical Committee). Standards from AWWA are available both individually, directly through the ANSI webstore, and as part of a Standards Subscription. If you or your organization are interested in easy, managed, online access to standards that can be shared, a Standards Subscription may be what you need - please contact us at: StandardsSubscriptions@ansi.org or 1-212-642-4980 or Request Proposal Price.

Below are AWWA's best-selling standards. To find additional standards, please use the search bar above.

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AWWA C651-2014

Disinfecting Water Mains

This standard presents essential procedures for the disinfection of new and repaired potable water mains.


AWWA D100-11

Welded Carbon Steel Tanks For Water Storage

This standard covers coating systems for coating and recoating the inside and outside surfaces of steel tanks used for potable water storage in water supply service.


AWWA C652-2019

Disinfection of Water Storage Facilities

This standard for disinfection of water-storage facilities describes materials, facility preparation, application of disinfectant to interior surfaces of facilities, and sampling and testing for the presence of coliform bacteria, chlorine residual, and acceptable aesthetic water quality. The standard also includes disinfection procedures for underwater inspection and/or cleaning of potable-water-storage facilities but does not describe the technical aspects of underwater inspection and/ or cleaning.


AWWA C655-18

Field Dechlorination

The purpose of this standard is to define the minimum procedures for the dechlorination of chlorinated or chloraminated water being discharged, including regulations, discharge site preparation, sampling and testing of discharge water, various methods of dechlorination, and dechlorination chemicals.  This standard can be referenced in specifications for the dechlorination of low-chlorinated or highly chlorinated water discharges into the environment. The stipulations of this standard apply when this document has been referenced, and then only to dechlorination. 


AWWA C605-2021

Underground Installation of Polyvinyl Chloride (PVC) and Molecularly Oriented Polyvinyl Chloride (PVCO) Pressure Pipe and Fittings

This standard describes underground installation and pressure testing requirements for polyvinyl chloride (PVC) and molecularly oriented polyvinyl chloride (PVCO) pressure pipe and fittings used to transport potable water, reclaimed water, irrigation water, and wastewater, or for the conveyance of any fluid compatible with PVC or PVCO. This includes products that comply with ANSI/AWWA C900, ANSI/AWWA C907, or ANSI/AWWA C909. These piping systems often contain components made from other materials. It may be necessary to supplement this standard with special requirements not included in this standard.


AWWA C200-2017

Steel Water Pipe, 6 In. (150 mm) and Larger (PDF)

This standard covers butt-welded, straight-seam or spiral-seam steel pipe, 6 in. (150 mm) and larger, for transmission and distribution of water.


AWWA C600-2017

Installation of Ductile-Iron Mains and Their Appurtenances

This standard covers the minimum requirements for the installation of ductile-iron water mains and their appurtenances, including materials, dimensions, tolerances, and testing procedures.  


AWWA M45-2014

Fiberglass Pipe Design, Third Edition

Selection, installation, field testing, and maintenance of all types of valves used in water distribution systems.


AWWA C105-2018

Polyethylene Encasement for Ductile-Iron Pipe Systems

The purpose of this standard is to provide the minimum requirements for polyethylene sheet and tubes to be used for external corrosion protection of buried ductile-iron pipe, fittings, and appurtenances.


AWWA C207-2018

Steel Pipe Flanges for Waterworks Service, Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm)

This standard describes ring-type slip-on flanges and blind flanges. The flange pressure limits and the tables that describe them are   Ring-type, slip-on flanges (see Tables 2, 3, and 4).  Blind flanges (see Table 5). Unless otherwise specified by the purchaser, the manufacturer shall select the type to be used. Flanges in this standard are intended for use with steel pipe, fittings, or appurtenances meeting the requirements of ANSI/AWWA C200, ANSI/AWWA C208, or other equivalent standards. It is intended that flanges be attached by welding in accordance with Sec. 4.3 of this standard.


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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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