Westmoreland County, PA Water Table Trend
Westmoreland County's groundwater trend, from USGS's own readings
Westmoreland County's long-term well puts the trend at 0.3 ft per decade, holding roughly steady, based on 193 measurements since 1967.
One well stands in for Westmoreland County's whole aquifer here, the honest simplification every page on this site carries.
What the well actually measured
The most recent reading put water 14.8 ft below land surface. Readings span 1967-06-01 to 2026-09-21, 193 measurements from USGS well USGS-402138079031802 (We 300 Westmoreland 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.
Where Westmoreland County ranks
Of the 1,449 US counties with a usable trend, Westmoreland County ranks 439th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 350,935 people live in Westmoreland County, Pennsylvania. See the fastest-moving counties guide for how Westmoreland County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Westmoreland County's water table is rising or falling is independent of what's actually in the water. Depletion can concentrate naturally-occurring minerals, so it's worth checking directly with a water test rather than assuming a depth trend says anything about quality.