San Juan Municipio, PR Water Table Trend
Is the water table dropping in San Juan Municipio, PR?
San Juan Municipio's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0.2 ft per decade over 37 years of readings.
One well stands in for San Juan Municipio's whole aquifer here, the honest simplification every page on this site carries.
What the well actually measured
The most recent reading put water 15.4 ft below land surface. Readings span 1989-02-09 to 2026-07-21, 309 measurements from USGS well USGS-182443066041502 (Piezometer Munoz Marin 1c-8, San Juan, Pr), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where San Juan Municipio ranks
Of the 1,449 US counties with a usable trend, San Juan Municipio ranks 529th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 0 people live in San Juan Municipio, . See the fastest-moving counties guide for how San Juan Municipio stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether San Juan Municipio'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.