If you experience a sudden plumbing leak, the first step is to turn off the main water supply to prevent further damage. Locate the shut-off valve, which is usually found in the basement or near the water meter, and turn it clockwise to close it. Next, contact a local plumber in Ephrata as soon as possible to inspect and repair the leak. In the meantime, if safe, move any furniture or valuables away from the affected area to minimize water damage. Additionally, you may want to use towels or buckets to catch any dripping water until a professional arrives.