The Administration is considering substantial changes to the current regulatory approach to reducing exposure to lead in drinking water. The US EPA (EPA) is assessing long-term revisions to the Lead and Copper Rule (LC Rule), a Safe Drinking Water Act (SDWA) regulation that seeks to protect public health by minimizing lead and copper in drinking water, primarily through corrosion control measures. Lead contamination in drinking water has been the subject of national scrutiny in the aftermath of the public health crisis in Flint, Michigan, where high levels of lead leached from aging pipes into the city’s drinking water after the city switched its source of drinking water to the Flint River, the quality of which was more corrosive than the prior source. Congress eventually banned lead pipes in new construction with amendments to the SDWA in 1986, but in a 2016 survey, the American Water Works Association estimated that 6 million lead-containing service lines continue to distribute drinking water to 15-22 million people in the United States. As state and local governments nationwide confront similar challenges, EPA appears poised to address the legacy of lead infrastructure through updates to the LC Rule. In January 2018, EPA Administrator Scott Pruitt pledged to update the LC Rule as part of his “war on lead” in drinking water. Continue Reading Reducing Exposure to Lead in Drinking Water: Status of Revisions to Lead and Copper Rule (Part 1)
In August 2014, residents of Toledo lost the use of tap water for two days because of a toxic algal bloom in the western basin of Lake Erie, which is their water source. In subsequent summers, the lake’s algal blooms have been smaller, but they remain a persistent phenomenon. In fact, the National Oceanic and Atmospheric Administration (NOAA) is predicting a significant cyanobacteria algal bloom in western Lake Erie this summer.
Numerous definitions of “harmful algal blooms” exist, but they generally can be understood as excessive growths of various species of phytoplankton, protists, cyanobacteria, or macro and benthic algae that negatively impact water quality, aquatic ecosystem stability, or animal and human health. The blooms may be toxic or nontoxic. Even nontoxic blooms can have repercussions for drinking water treatment, recreational use of the waterbody, and the overall economy.