Milwaukee County, WI Water Table Trend
Milwaukee County's groundwater trend, from USGS's own readings
Over 80 years of USGS readings, the well tracking Milwaukee County's aquifer is holding roughly steady: 0.3 ft per decade.
One well stands in for Milwaukee 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 31.1 ft below land surface. Readings span 1946-06-27 to 2026-07-08, 5000 measurements from USGS well USGS-425613088014301 (Ml-06/21e/32-0148), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Milwaukee County ranks
Of the 1,449 US counties with a usable trend, Milwaukee County ranks 877th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 924,740 people live in Milwaukee County, Wisconsin. See the fastest-moving counties guide for how Milwaukee County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Milwaukee 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.