استانداردها

BSI - British Standards Institution (515)

American Water Works Association (AWWA) (38)

IEEE - The Institute of Electrical and Electronics Engineers, Inc. (17)

AASHTO - American Association of State Highway and Transportation Officials (8)

APHA,American Public Health Association (4)

AWWA,American Water Works Association (4)

ETSI - European Telecommunications Standards Institute (4)

WEF,Water Environment Federation (4)

2000 - 2025 (26160)

1922 - 1999 (3273)