Water visibility
at the portfolio
level.
We work with real estate portfolios to reduce infrastructure cost exposure—specifically water—and convert those improvements into measurable NOI and asset value.
Most portfolios are flying blind on water.
Without asset-level visibility, water is managed as an operating expense — not as a capital markets input. That's a structural disadvantage.
No line of sight to consumption
Portfolio managers receive aggregate utility bills — not actionable data. Anomalies, leaks, and inefficiencies compound for months before anyone notices. By then, the cost is already in the books.
GRESB water data is incomplete or estimated
Missing or low-coverage water data directly suppresses GRESB scores. With 150+ institutional investors referencing GRESB benchmarks, a weak water indicator affects fund positioning and capital access — not just compliance.
Savings are invisible without verification
Efficiency upgrades without verified measurement cannot be reported to investment committees or reflected in NOI projections. Unverified claims carry no weight in underwriting or ESG disclosure.
What portfolio-level water visibility actually means.
Visibility isn't sensors. It's the intelligence layer that turns consumption data into investment decisions.
"Water data should tell you which assets are performing, which are at risk, and what the NOI impact is — in real time."
— WST Advisory Framework
Consumption benchmarked by asset class
Every asset measured against its own peer group. Hospitality vs. office vs. industrial — each with its own intensity baseline and anomaly threshold.
Leak detection with financial quantification
Real-time monitoring flags abnormal consumption. Every alert is translated into an estimated cost exposure before it becomes a capital event.
GRESB-formatted data coverage, automatically
The Ara AI platform automates utility bill collection portfolio-wide, ensuring data coverage that satisfies WT1 indicator requirements — the highest-weight water component in GRESB scoring.
Savings presented in investment committee language
Every efficiency improvement is converted to annualized savings, payback period, and NOI impact — with verified documentation suitable for lender, investor, and ESG disclosure.
From Water Cost
to Portfolio Intelligence
Water is the last unmanaged utility in most institutional portfolios. WST converts asset-level consumption data into the financial metrics your investment committee, lenders, and LPs expect — NOI impact, payback period, and verified savings documentation.
per asset, post-audit
across 31 assets
on monitoring investment
"Verified savings across 31 assets. Reported at the GRESB level. WST gave us the data to have a different conversation with our investors."
Portfolio Manager · DiamondRock HospitalityGRESB Water Coverage,
Automated
Water data gaps are the single most common reason portfolios lose GRESB points on the water component. WST's Ara AI platform automates utility bill collection portfolio-wide, closing WT1 coverage gaps before submission — and producing verified documentation for CDP and LP disclosure.
GRESB benchmarks for capital decisions
The Technical Layer
Your Team Can Trust
WST doesn't replace your infrastructure — it instruments it. Our IoT monitoring layer integrates with existing main and sub-meters, cooling towers, boilers, and irrigation systems to produce real-time consumption data at the device level. No rip-and-replace. No extended installation windows.
"WST's audit found issues our engineers missed — it paid for itself in 90 days."
Director of Engineering · Hilton South TowerTwo systems. One integrated view.
Ara AI handles data coverage. Real-time monitoring validates it. Together they produce the audit-grade visibility institutional portfolios require.
Automated utility bill collection
Ara aggregates utility data across the portfolio automatically — eliminating manual entry, closing coverage gaps, and generating GRESB-ready datasets at scale.
Real-time validation & anomaly detection
Smart sensors monitor live consumption at the asset level. Deviations from baseline trigger immediate alerts with estimated cost impact — before the next billing cycle.
Verified data → investment insight
WST translates both data streams into portfolio-level reporting: GRESB submissions, NOI impact analyses, efficiency roadmaps, and investment committee documentation.
$2.3M in verified savings. 31 assets. Reported.
DiamondRock engaged WST to establish portfolio-wide water visibility across its hospitality assets, beginning with The Westin Fort Lauderdale Beach Resort. Real-time monitoring and bill validation delivered verified consumption reductions that were documented for both internal reporting and GRESB submission.
Read Full Case StudyTwo ways to engage WST.
Whether you need a defined-scope assessment or ongoing portfolio advisory, WST structures around your investment cycle — not a product catalog.
Portfolio Water Assessment
A scoped engagement producing audit-grade findings, GRESB-formatted data, and a prioritized efficiency roadmap. Designed for acquisition due diligence, GRESB preparation, or establishing a water baseline across a new portfolio segment.
- On-site and bill validation water audit across defined assets
- Asset-level consumption data formatted for GRESB submission
- Water intensity benchmarking vs. peer asset class
- Prioritized efficiency opportunities with ROI and payback
- Investment committee–ready findings documentation
Ongoing Portfolio Visibility
A continuous advisory relationship providing real-time monitoring, automated GRESB data collection via Ara AI, and ongoing NOI impact reporting across the portfolio. WST functions as an embedded water intelligence layer.
- Ara AI automated utility bill collection — portfolio-wide
- Real-time IoT monitoring with anomaly alerts and cost translation
- Annual GRESB water data preparation and submission support
- Quarterly portfolio water performance reporting
- Efficiency project implementation and verified savings documentation
- Investment committee briefings and ESG disclosure support