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Original standard ANSI AWWA C115 - A21.15-20 in PDF full version. Additional info + preview on request

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Original standard ANSI AWWA C116 - A21.16-22 in PDF full version. Additional info + preview on request

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Original standard ANSI AWWA C150 - A21.50-21 in PDF full version. Additional info + preview on request

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Original standard ANSI AWWA C151 - A21.51-17 Errata 2018 in PDF full version. Additional info + preview on request

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Original standard ANSI AWWA C151 - A21.51-17 in PDF full version. Additional info + preview on request

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Original standard ANSI AWWA C153 - A21.53-19 in PDF full version. Additional info + preview on request

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