As a proactive approach to the EPA’s new Lead and Copper Rule Revisions (LCRR), this Pennsylvania PWS is exploring water quality parameter modifications that could be implemented for optimal corrosion control. This includes modifications to pH, alkalinity, chlorine/chloramines, management of water age, and the addition of corrosion control additives. The ability to implement these modifications (if needed) will allow the utility to proactively respond if affected by the revised trigger level included in the LCRR.
- First, McKim & Creed is performing a desktop assessment of current and future water qualities.
- Second, McKim & Creed is conducting an immersion corrosion study that allows water quality to be adjusted to a specific scenario. Different scenarios can be adjusted simultaneously and will include a number of conditions with various pH, pipe materials and chemical additives.
- Third, once the immersion control study data has been analyzed, McKim & Creed is conducting a more detailed and intensive set of pipe rig loop studies. This will enable engineers to simulate conditions in the plumbing system.
Overall, the team will examine current water quality, different pH/alkalinity levels, various types and doses of corrosion inhibitors. From this information, engineers will determine the effect of existing and future water quality changes on the existing public and private plumbing piping materials, as well as assist the PWS in determining the best course of action to obtain an optimal corrosion control.
Click here for more information on LCRR first-phase implementation.