Some Muskingum County residents are without water service Friday morning. Water Department Superintendent Don Madden says just before 7:00 a.m. calls came in from residents saying they lost water pressure or service. Madden say a large section of the eastern part of the county is affected. He says if you live east of the Muskingum River you are most likely having problems this morning. Crews says a 12 inch main failed near the Airport Industrial Park. Once customers regain service Madden says a boil advisory will be in effect.