Natural Gas Safety We are investing millions in gas safety improvements. You can learn to see, hear and smell a gas leak. Together, we can be gas safety prepared. Smell of Gas Smell rotten eggs? It could be a gas leak. Learn how to recognize the signs of a gas leak, act fast and be prepared. Smell, Leave, Tell. System Management & Maintenance Eversource is always working to keep you safe while maintaining and operating our systems at the highest standards.More About Our System Upkeep Call 811 Before You Dig Doing an extreme yard makeover? Or planting a tree? No matter how much or little you dig, always Call Before You Dig at 811.Together We Can Avoid A Gas Leak Tips for Every Home No matter how you use it, natural gas is safe, efficient and reliable. Follow these helpful tips for the continued safe use and enjoyment of your appliances.See Gas Appliances Tips Customer Owned Gas Line Maintenance You might have questions about which parts of your service are privately owned and which parts Eversource maintains.Learn About Customer Owned Gas Lines Pipeline Markers Since pipelines are underground, line markers are sometimes used to indicate their approximate location along the route. Winter Safety Tips Tips on maintaining your natural gas meter and pipes during the cold winter months, while avoiding carbon monoxide. Excess Flow Valves Information about mechanical devices installed on gas service lines. Cross Bores Be alert for underground utility lines inadvertently installed through a sewer line.