6MAY

Microsoft Mount Pleasant: 8M gallons via lawsuit

3 min read

13:52UTC

Microsoft's Mount Pleasant phase 1 draws 8 million gallons of water a year, a figure released only after Milwaukee Riverkeeper sued the city of Racine to break a non-disclosure clause in the development agreement.

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Key takeaway

Microsoft signed a basin-level water pledge and a Racine NDA in the same year; only litigation reconciled them.

Microsoft announced a basin-level water disclosure framework in January 2026, committing to replenish more water than it withdraws in the same catchments. ¹ The same company's development agreement with the city of Racine, Wisconsin included a non-disclosure clause covering community-impact data for its Mount Pleasant campus, an arrangement only broken when Milwaukee Riverkeeper sued for the records. The released figure was 8 million gallons per year for phase 1 of a $3.3 billion site. Amazon still publishes no electricity figures at all.

Milwaukee Riverkeeper is a non-profit water-quality organisation founded in 1995 to monitor and litigate on the Milwaukee River basin, working under the federal Clean Water Act and Wisconsin's open-records law. Its Racine lawsuit invoked the Wisconsin Public Records Law, which generally requires municipal contracts to be disclosed unless a specific statutory exemption applies. The court found the NDA could not override the statutory disclosure obligation. The Mount Pleasant site is the Wisconsin campus on which Microsoft is investing $3.3 billion across multiple build phases, sited in part because the area was previously zoned for the Foxconn project that collapsed in 2018.

The 8 million gallons per year figure is for phase 1 only and excludes evaporative cooling losses, which water disclosure frameworks typically itemise separately. Phase 1 is roughly a quarter of the planned campus by floor area; the full build's annual draw will likely be four to six times the disclosed phase 1 number, depending on cooling architecture. WRI Aqueduct, the World Resources Institute's water-stress mapping tool, classifies the relevant catchment as low-stress, which is part of why the project cleared its environmental review without significant friction.

Microsoft's basin-level framework was designed to be cited in ESG filings; the Racine NDA was designed to keep specific community-impact data out of public hearings. Both can be true simultaneously. Amazon's silence on electricity figures sits at the cleaner end of the same problem. Without site-level disclosure mandated by law (rather than by litigation), corporate sustainability reports remain selective by construction. Whether Microsoft amends its development-agreement template after the Racine ruling is the next test of whether the January pledge is operative or rhetorical.

Deep Analysis

In plain English

Data centres use large amounts of water, mainly for cooling. A server room generates enormous heat; water is used to absorb that heat and release it into the atmosphere through cooling towers. Microsoft announced in January 2026 that it would publicly report its water use at the level of river basins, and commit to putting back more water than it takes out. This sounds reassuring, but separately, its agreement with Racine, a city in Wisconsin, included a clause preventing the city from sharing data about the environmental impact of the Mount Pleasant campus. Milwaukee Riverkeeper, an environmental group, sued under Wisconsin's public records law to force the city to release that data. The court agreed, and the released figure was 8 million gallons of water per year for just the first phase of a $3.3 billion site. Amazon, by comparison, publishes no electricity usage figures at all, a reminder that voluntary disclosure is the exception, not the norm.

Deep Analysis

Root Causes

Cities negotiating development agreements with hyperscalers routinely accept NDA clauses borrowed from private sector contracting, under pressure to secure large investments. Those clauses rarely survive public records challenge, but public records challenges are rarely filed.

Milwaukee Riverkeeper's lawsuit against Racine is unusual in that an environmental group had both standing and resources to pursue the action against a city backed by Microsoft's legal team.

What could happen next?

Precedent
Milwaukee Riverkeeper's successful public records action against Racine provides a legal template for challenging municipal NDAs in development agreements across all US states with strong open-records statutes.
Meaning
The 8 million gallons-per-year figure for phase one of Mount Pleasant, once public, becomes the baseline reference point for water-use assessments of future Microsoft campus phases and competitor facilities of comparable scale.

Source Landscape

This story draws on neutral-leaning sources

Consensus view: The 2010s shale boom water-disclosure litigation provides the closest structural parallel: operators initially secured NDAs with municipalities covering water withdrawal and injection figures, which community groups then litigated through state open-records laws.

Microsoft's Racine NDA was broken via Wisconsin's public records statute, the same legal pathway that shale operators eventually lost. Water Rights Watch, a US environmental legal group, notes the Milwaukee Riverkeeper case now provides a template for challenging similar NDAs in development agreements across the 26 states where Microsoft has active campus developments.

Counter-view: Microsoft's basin-level disclosure commitment, announced in January 2026, goes beyond what any US regulator currently requires. The company argues the Mount Pleasant NDA was a city-level confidentiality agreement protecting commercial terms, not a deliberate concealment of environmental impact.

The disclosed figure of 8 million gallons per year for phase one is, by most independent assessments, within the range that the Mount Pleasant aquifer can sustain at current recharge rates.

Key tension: Whether the Riverkeeper litigation establishes a national precedent for overriding municipal NDA clauses in public development agreements, or whether courts treat each development agreement's confidentiality provisions as individually negotiated and not subject to blanket public records override.

Sources:Tom's Hardware / Wisconsin Examiner·Tom's Hardware / Wisconsin Examiner

Mentions:Microsoft →Amazon →WRI Aqueduct →Milwaukee Riverkeeper →Mount Pleasant Wisconsin →Racine →AWS →

First Reported In

Update #1 · Boom hits wall: grid says no, states freeze

Tom's Hardware / Wisconsin Examiner· 26 Apr 2026

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Causes and effects

This Event

Microsoft Mount Pleasant: 8M gallons via lawsuit

The same operator pledged basin-level transparency in January and contracted secrecy on the actual site in the same year.

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Different Perspectives

Johor state authority and Malaysian community

Johor halted Tier 1 and Tier 2 approvals after Malaysia's first water-rights protest; applicants face a mid-2027 floor on connections. The Diplomat's framing under UN Guiding Principles on Business and Human Rights imports a disclosure regime that ASEAN regulators had not previously applied to data-centre water consumption.

G42 and UAE sovereign programme

G42 confirmed all long-lead equipment procured for the 200 MW Stargate UAE first phase targeting Q3 2026; sovereign demand pull from the UAE government as anchor tenant provides cost patience commercial capital cannot replicate despite year-round mechanical cooling raising PUE to 1.35-1.50.

OpenAI and UK government

OpenAI cited UK industrial electricity at 'more than four times' US and Nordic rates as a co-equal Cobalt Park barrier alongside NESO's 50 GW grid queue. The named multiplier drops the UK off the global top-10 for new greenfield builds independent of any queue reform NESO can deliver in the near term.

Ecologistas en Acción and community challengers

Ecologistas en Acción's TSJ Aragón challenge to Amazon's 30-building expansion produced no ruling in the window, leaving Aragón's third-place global ranking under judicial cloud. The Virginia Court of Appeals precedent on inadequate public notice gives European community groups a template to apply to Spanish regional planning law.

FERC and US state regulators (NESO, EirGrid)

FERC pledged on 16 April to act by end of June on RM26-4-000, the first federal rulebook for loads above 20 MW. Ireland's CRU on-site-generation rule, now templated by Pure DC's 110 MW Dublin microgrid, shows that a freeze paired with a defined compliance route can reopen a closed market.

Hyperscaler operators (Microsoft, Alphabet, Amazon, Meta)

All four reported Q1 2026 earnings with no downward revision to combined 2026 capex of $725 billion, treating the moratorium wave as a routing problem rather than a demand signal. Microsoft's $37 billion AI annual run rate confirms that capital allocation runs on quarterly board cycles that five-to-eight-year consent timelines cannot disrupt.