The Lake County General Health District monitors water quality at Headlands State Park Beach and Lake Metroparks Fairport Harbor Lakefront Park between Memorial Day and Labor Day. Samples are collected daily (including weekends and holidays) and results are reported 24 hours later. Beach water is sampled for E. coli bacteia. When the bacterial count exceeds the single sample standard of 235 E.coli/100 ml sample, advisory signs are posted at the beaches. In the absence of a warning sign, use common sense to evaluate the lake conditions prior to swimming. It is recommended bathers avoid the water for 24-48 hours after a heavy rain of one-half inch or more in a 24 hour period, or if the lake appears to be very rough and dirty.