Every three years, the Menlo Park Municipal Water District is required to perform lead and copper monitoring to meet the Environmental Protection Agency’s Lead and Copper rule. By Sept. 30, 2015, the water district must collect at least 30 samples from homes that have lead pipes or copper pipes with lead solder that were constructed before 1987. Homes cannot have water softener treatment systems or carbon filter systems installed. This month, staff will mail postcards seeking volunteers willing to take a “first-draw” sample on a morning in late-August where the water has not been used for at least six hours. The water district will provide sample kits and free lead and copper water quality test results for each resident that participates. Qualifying residents will be selected on a first-come, first-served basis.