WSR 07-09-044



(Office of Drinking Water)

[ Filed April 11, 2007, 3:59 p.m. ]

Title of Policy: Ultraviolet Disinfection Monitoring for Filtered Water Systems Complying with the Surface Water Treatment Rule.

Supersedes: Not applicable.

Issuing Entity: Washington state department of health, division of environmental health, office of drinking water.

Description: This policy clarifies the monitoring, operational, and reporting requirements for water systems that install ultraviolet reactors to inactivate Giardia lamblia to meet the disinfection requirements of the surface water treatment rule.

Office Contact: Sam Perry, Department of Health, Office of Drinking Water, Northwest Regional Office, 20435 72nd Avenue South, Suite 200, Kent, WA 98032, (253) 395-6755,

Effective Date: March 21, 2007.

Denise A. Clifford, Director

Office of Drinking Water

Washington State Code Reviser's Office