IDSE Report & Sampling Plan – Elon
In order to improve drinking water quality and provide additional protection from disinfection byproducts, EPA and NC Public Water Supply created the Stage 2 Disinfection Byproducts Rule. The rule establishes that community water systems which use chlorine or chloramines for disinfection, had to evaluate their systems to identify maximum residence times for disinfection byproducts and then to increase sampling of these sites to ensure that levels were below maximum allowable levels. The disinfection byproducts in question are Total Trihalomethanes (TTHM) and Haloacetic Acids (HAA5). AWCK assisted the Town of Elon in complying with the Stage 2 Disinfection Byproducts Rule through evaluating the system, establishing a flushing program to reduce disinfection byproducts, and by improving recordkeeping. The rule required communities to increase distribution system monitoring to establish maximum residence times within the distribution system and then to prepare a report explaining why these points were chosen.
Project Engineer: Josh Johnson, P.E.
Completion: 2012