Lancaster County, SC Water Table Trend
Lancaster County, SC: what the water table is actually doing
Lancaster County's long-term well puts the trend at 1.7 ft per decade, rising, getting shallower over time, based on 119 measurements since 2009.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Lancaster County's source well, in detail
Depth to water at the last reading was 34.1 ft below land surface. Readings span 2009-03-24 to 2026-09-03, 119 measurements from USGS well USGS-344333080503600 (Lan- 497 Lancaster County Airport Regolith), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Lancaster County compares nationally
Lancaster County sits at rank 146th 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. Lancaster County, South Carolina is home to about 111,652 people. See the fastest-moving counties guide for how Lancaster 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 Lancaster 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.