Eight businesses at Deer Springs Town Center in North Las Vegas were without running water from Saturday through Monday after four brass backflow valves were stolen. The valves were replaced and water service was restored Tuesday, but some businesses say the interruption cost them appointments and sales. Duc Lu, the center’s property manager, estimated the damage at $10,000. The valves are commonly targeted for their copper, officials said. Lu said the replacement valves could be vulnerable to theft again, even though they are kept in locked cages. No video surveillance was available to capture the theft. The outage forced Beauty Lab 702 to cancel salon appointments. Hairstylist Ashley Fode estimated she lost more than $1,000 in business. She said the salon could not operate without water for handwashing required under licensing rules. Mathnasium Learning Center owner Alan Brown said the center arranged an emergency water supply so students could wash their hands and use restrooms. The business was considering closing if water had not returned Tuesday. North Las Vegas’ utilities department recorded three other backflow-valve theft incidents in the past year, separate from the Deer Springs Town Center case, the city said. The disruption highlights how theft of infrastructure components can quickly affect neighborhood businesses and the people who rely on them.