Click here to download the Water System Standards 
Includes amendments.*

*Note: Any amendments to the Water Systems Standards on this website are posted for the Board of Water Supply, City & County of Honolulu only.  For all other amendments, viewers should check with each respective Department. 

Hard copies or CDs of the Water System Standards  may be purchased from the City & County of Honolulu Municipal Bookstore.  Hard copy $19.00 or $7.00 for CD.

For more information on requesting product inclusion in the Water System Standards' Approved Materials List, please click here.