Biennial Drinking Water Plants Survey (DKWP)
Other reference periods
- 2021 Biennial Drinking Water Plants Survey (DKWP)
- 2019 Biennial Drinking Water Plants Survey (DKWP)
- 2017 Biennial Drinking Water Plants Survey (DKWP)
- 2015 Survey of Drinking Water Plants (SDWP)
- 2013 Survey of Drinking Water Plants (SDWP)
- 2011 Survey of Drinking Water Plants
- 2005 to 2007 Survey of Drinking Water Plants
Generally, information is only available for reference periods after November 2000.
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