New Bay Mountain water storage tank enhances reliability and water quality monitoring in Griswold

GRISWOLD, Conn., Sept. 1, 2026 - Customers in Connecticut Water's Bay Mountain system now benefit from improved service reliability, enhanced water quality monitoring, and increased system resiliency thanks to a new 33,000-gallon water storage tank that recently went into operation. The new tank provides our certified (professional) drinking water operators with greater flexibility to manage the water system, helps maintain service during certain equipment or power disruptions, and supports advanced monitoring technology for closer oversight of water quality throughout the treatment process.

The new atmospheric storage tank recently went into operation, replacing an aging buried tank that had reached the end of its useful service life. Over time, the liner in the previous tank began to deteriorate and developed a small leak. Its underground design also made routine inspections, required by the Connecticut Department of Public Health, difficult to perform.

After evaluating several alternatives, Connecticut Water's Engineering and Operations teams determined a new ground-level storage tank would provide the most effective solution for the Bay Mountain system. The new tank offers adequate storage capacity to meet typical daily customer demand while providing operators with greater flexibility in managing the system.

The company selected a bolted stainless steel tank design. In addition to being durable and reliable, stainless steel tanks require less maintenance over their lifespan.

As part of the project, Connecticut Water installed new monitoring technology that provides real-time insight into water treatment performance. This added visibility helps our water quality professionals evaluate the performance of water quality treatment and make adjustments earlier, helping ensure optimal treatment before water reaches customers.

The project also improves system resilience. The new tank's elevation allows it to provide water pressure to customers even if the booster station pumps experience service interruptions caused by lightning strikes or power fluctuations, both of which can occur in the area. A lightning protection system at the facility also protects components.
The new tank represents Connecticut Water's ongoing commitment to investing in infrastructure improvements that enhance reliability, strengthen water quality, and support the long-term needs of the communities it serves.