Butler County, PA Water Table Trend
Is the water table dropping in Butler County, PA?
Over 56 years of USGS readings, the well tracking Butler County's aquifer is holding roughly steady: 0.5 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Butler County's source well, in detail
Depth to water at the last reading was 3.5 ft below land surface. Readings span 1970-06-01 to 2026-09-18, 178 measurements from USGS well USGS-410501079524401 (Bt 311 Butler County Observation Well), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Butler County compares nationally
Butler County sits at rank 362nd 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. Butler County, Pennsylvania is home to about 199,341 people. See the fastest-moving counties guide for how Butler County 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 Butler County 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.