Falmouth officials warn Long Pond drawdown, urge regional response to summer demand

Falmouth officials on Aug. 12 told Barnstable County commissioners that the town's primary drinking-water source, Long Pond, is experiencing lower intake elevations and sustained summer drawdown that risks operational strain on the water system. "Based on this USGS report, our intake is only so far into Long Pond," said Matt Lannon, the town's water superintendent, summarizing a recent multibeam sonar survey and lidar comparisons that show a fall from about 9 feet to roughly 6.23 feet at the intake elevation.

Mike, the town's chief operator, described the operational consequences: the system holds roughly 7,000,000 gallons of storage and operators can pump as much as 12,000,000 gallons in a single hot summer day. "In the summer, you know, we drop down 1 or 2 million in the tanks, and we're pumping full steam ahead, and we never get back to that full 7,000,000 gallons," he said, describing persistent peak demand that the plant does not fully recover from overnight. Town officials attributed the shortfall to a combination of long-term drought conditions, higher year-round population and widespread irrigation use.

Commissioners and town staff discussed immediate and policy responses, from stepped-up enforcement of existing irrigation bans to exploring redundancy in sources and longer-term projects such as new well development or wastewater reuse infrastructure. "We're going to have to consider more active enforcement on [the irrigation ban] and potentially declare environmentally sensitive areas," said Doug Brown, a member of the Falmouth select board. Officials cautioned that bringing new sources online involves lengthy approvals with MassDEP and that reuse options may be costly or controversial, but several commissioners urged a coordinated regional approach and follow-up briefings at upcoming county meetings.