Equinix BO2 – Billerica

Confirmed events only, each with its source.

1. ~January 1998

   Construction completed

   The Billerica facility opens and operates for nearly two decades as a Verizon-owned data center before its 2017 sale.

   Source

2. ~January 2017

   Ownership change

   Equinix acquires the Billerica facility along with 28 other data centers in a portfolio purchase from Verizon, renaming it BO2.

   Source

From nearby USGS and NOAA monitoring stations, refreshed monthly. Dashed lines mark lifecycle milestones.

Water permits and environmental compliance records from MassDEP WMA permits and decisions and EPA ECHO.

Is the water table's behavior near this facility consistent with its estimated draw — and how strong is the evidence? A fixed rubric, recomputed monthly; every number below is stored with the inputs that produced it. Method: attribution-v1.

1. 1 · Pathway

   The operator has not disclosed where this facility's water comes from. Until a source is published, the assessment is capped: an unclassified pathway can never raise the score.

2. 2 · Detectability

   At the high end of the estimate, the expected signal at the nearest monitored well 1.1 mi away is marginal (~0.3 ft) and may be lost in noise.

3. 3 · Signal

   Monthly median depth to water: wells within 2 mi of the facility (violet) vs. matched background wells 5–15 mi away (gray). Shading marks the assessment's baseline and post-anchor windows. ΔDiD = +1.42 ft (positive = decline near the facility relative to controls).

   Dashed: each near well's own trend, deseasonalized and projected forward from its last reading — a projection of measured history, not a prediction, and never part of the evidence score below. Method: forecast mode.