We are fortunate, thanks to the foresight of townspeople 100+ years ago, that our supply is relatively stable and meets our current demands. This puts us in a much better situation than our neighbors who rely on the Ipswich River Basin (or any other stressed water basin). But our plentiful supply is endangered by more-frequent droughts and by unsafe levels of PFAS, as is the case for many water systems. For instance, Cambridge MA had an excellent water supply via Fresh Pond, until suddenly increased PFAS levels shut down that local water supply. Cambridge shifted to the MWRA Quabbin Reservoir system, thanks to an existing connection to MWRA water. (We don’t have the option of connecting to MWRA.) If PFAS levels exceed the new EPA standards (now under review), we may have to shut down Lincoln Street Well which supplies 40% of our drinking water. This would trigger an immediate water crisis, which could only be solved locally through increased treatment and/or conservation.