Hydrant Sampler Website and Training Video

On May 4, the website www.epa.gov/hydrant-sampler was launched with a YouTube training video produced by the Optimization Team to describe how to use a hydrant sampler. This tool, developed by the team, allows users to collect representative distribution system water quality samples in a controlled, safe manner. The website describes the parts required to assemble a hydrant sampler as well as the procedure for appropriately using it.


Development of Disinfection Dosing Protocol

On May 27th and 28th, the optimization team partnered with staff from the Pennsylvania Department of Environmental Protection to pilot a protocol that was developed to assess process control of chlorine and ammonia dosing at two chloraminated water systems in the Pittsburgh area.  The ratio of chlorine-to-ammonia in the finished water entering a distribution system should be consistently maintained within a desired range to decrease the likelihood of nitrification and increase the stability of monochloramine in the distribution system.  Feedback from participants will be used to enhance the protocol, which will become a component of future comprehensive performance evaluations for chloraminated distribution systems.  (Matthew Alexander & Alison Dugan, US EPA, TSC)

South Carolina Department of Health and Environmental Control (SCDHEC) Filter Assessment Manual

SCDHEC’s Filter Assessment Manual is a compilation of proven filter testing techniques gathered from various sources, including AWWA conference proceedings, EPA guidance manuals, and water treatment textbooks. The manual describes in detail how to conduct a filter assessment and how to establish a filter surveillance program, two activities that can and should be practiced at drinking water treatment plants to optimize filter performance. Both of these optimization activities make use of a number of physical and operational filter tests designed to pinpoint various factors that may be limiting filter performance. A filter assessment is a single event during which most or all of the different filter tests are conducted in a comprehensive, full-scale investigation of filter performance. A filter assessment is often done when poor filtered water quality indicates that there may be a problem with a filter’s physical condition or its operation. A filter surveillance program is the routine testing of filter performance on an ongoing basis, incorporating each of the various filter tests according to a set schedule. A filter surveillance program is designed to monitor filter performance and to prevent problems from occurring. The SCDHEC Filter Assessment Manual contains a description of each of the different filter tests, including setup, equipment needed, and step-by-step procedures, complete with photographs and worksheets. The manual also explains how to interpret the test results and to apply the results to corrective actions that can optimize filter performance and filtered water quality.

For more information about using this tool, please contact Rick Hiers (hiersrs@dhec.sc.gov, (803)898-4202) or Rich Welch (welchra@dhec.sc.gov, (803)898-3546).

Filter Assessment Manual-Dec2003