Western Connecticut Planning Region, CT Water Table Trend
Western Connecticut Planning Region's groundwater trend, from USGS's own readings
Western Connecticut Planning Region's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0 ft per decade over 60 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Western Connecticut Planning Region's source well, in detail
Depth to water at the last reading was 28.6 ft below land surface. Readings span 1966-12-19 to 2026-08-25, 826 measurements from USGS well USGS-413007073250502 (Ct- Bd 8r), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Western Connecticut Planning Region compares nationally
Western Connecticut Planning Region sits at rank 636th of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Western Connecticut Planning Region, Connecticut is home to about 637,013 people. See the fastest-moving counties guide for how Western Connecticut Planning Region stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Western Connecticut Planning Region can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.