Fairfield County, OH Water Table Trend
Is the water table dropping in Fairfield County, OH?
Fairfield County's long-term well puts the trend at 0 ft per decade, holding roughly steady, based on 185 measurements since 1965.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Fairfield County's source well, in detail
Depth to water at the last reading was 12.3 ft below land surface. Readings span 1965-10-01 to 2026-08-26, 185 measurements from USGS well OH015-394544082271000 (F-1 Oh), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Fairfield County compares nationally
Fairfield County sits at rank 689th 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. Fairfield County, Ohio is home to about 167,762 people. See the fastest-moving counties guide for how Fairfield 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 Fairfield 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.