The chemical & water sectors are 2 of the sectors that if attacked by terrorists could have a debilitating impact on the nation. There are 4,000 chemical mfg. facil. that produce, use, or store more than threshold amounts of chem. that pose the greatest risk to human health & the environ. There are 53,000 community water systems & more than 2,900 maritime facilities that are required to comply with security reg. This report provides info. about what fed. require. exist for the chem. & water sectors to secure their facil., what fed. efforts were taken by the agencies for these sectors to facilitate sectors' actions, what actions selected facil. within these sectors have taken & whether they reflect a risk mgmt. approach, & what obstacles they faced in implem. enhanc.