The Water System Standards and Water System External Corrosion Control Standards are available for download from the Board of Water Supply (BWS). Any amendments to the Water Systems Standards on this website are posted for the BWS only. For all other amendments, please check with each respective Department.

To request inclusion in the Approved Materials List of the BWS Water System Standards, please review the procedure

water system standards document 2002
water system standards external corrosion control standards 1991

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Updated: 8/3/18