A pharmaceutical plant can meet every internal water efficiency target it sets and still be the most exposed operation in its basin. The meter inside the fence line measures what the facility draws. It says nothing about whether the aquifer or the river it draws from can keep supplying that volume in a drought year, or whether the county next door will support the withdrawal permit when it is renewed.That risk is now a site-strategy problem rather than a sustainability-reporting problem. The industry is in the middle of a large domestic buildout, and the water decisions for those sites are being locked in during the site selection process, years before anyone discloses any intent to build.
The solution that mitigates business risk is Volumetric Water Benefits, or VWBs: a measured volume of water that restoration work outside the fence line returns to the basin, quantified against a documented baseline and claimed under a published method. The method behind it was substantially rewritten in 2025, and the update changes what constitutes a credible claim.
Life sciences manufacturing is water-intensive in a specific way. Water for Injection and Clean-in-Place systems require a high-purity supply, and generating that purity means treating considerably more feedwater than the process ultimately uses. A site’s real draw on the local system is therefore greater than its product water volume would suggest. Efficiency projects trim the edges but do not change the fact that the facility needs a reliable, potable-quality supply every day it runs.
If the basin is stressed, water risk can be an interruption to business processes, a condition of a withdrawal permit, or manifest during a public hearing, where the plant’s water demand becomes the organizing complaint. When water is an afterthought in project siting, it can become the operational constraint that everything else must work around.
Volumetric Water Benefit Accounting (VWBA) defines a volumetric water benefit as the volume of water resulting from a water stewardship activity, expressed per unit time, that modifies hydrology in a beneficial way or helps reduce a shared water challenge in the catchment.
It is a volume, over time, in a named catchment. A benefit is not a general claim of environmental improvement. It is the replenished volume of acre-feet or cubic meters per year in the basin where the shared water challenge sits. A benefit generated in a basin that the facility does not draw from does not address the facility’s risk exposure.
It’s measured against a documented baseline. The practitioner must establish what the hydrology would have done without the project, then quantify the difference. That “without project” reference is what separates a benefit from a naturally occurring condition.
It measures outputs, not guaranteed outcomes. This is the honest limit of the method, as stated in the guidance itself. VWBA quantifies the volumetric output of an activity. It does not by itself prove that the intended social or ecological outcome occurred. Monitoring and verification are what carry a claim the rest of the way, which is why durable project design and long-term stewardship matter more than the accounting spreadsheet.
The method recognizes several categories of qualifying activity, including land conservation and restoration; aquatic habitat restoration, such as wetland uplift and barrier removal; water quality improvement; water supply reliability; water access; water governance; and enabling work, such as monitoring and planning. For a manufacturing site, the first three are usually where meaningful volume lives.
The original VWBA method was published by World Resources Institute in 2019 with Quantis, LimnoTech, and Valuing Nature. It became the de facto reference for corporate water benefit claims.
In September 2025, WRI released Volumetric Water Benefit Accounting 2.0, developed with LimnoTech, Bluerisk, and the Bonneville Environmental Foundation. It is a 72-page guidebook built around a six-step approach:
Two of those steps matter disproportionately for a company building a new water-intensive operation in a potentially stressed watershed.
Step 1: Catchment Context. Understanding the catchment context is critical to establishing a resilient operation in a watershed unknown to a developer. During site selection, it is critical to understand potential current and future stresses in the watershed to avoid issues associated with water scarcity, water quality, and community pushback.
Step 4: Planning and Agreement - Obtaining buy-in from internal and external stakeholders is paramount to seamless site development. Uniting local context with positive watershed uplift helps develop positive outcomes with teaming partners, regulators, and the community.
Both steps are critical to project success and should be considered during site selection rather than as an afterthought, as has been typical in the site selection process.
If a restoration project has more than one funder, or sits on land held by a public agency or a conservation partner, who counts the volume and for how long a negotiation is, not an afterthought. Companies that raise this after construction find the answer is worse than it would have been.
Typical watershed uplift also includes other positive project outcomes beyond water replenishment. These include water quality uplift. To help quantify these improvements, WRI also released a companion Water Quality Benefit Accounting guidance, developed with LimnoTech and The Nature Conservancy. For pharmaceutical sites, where effluent quality is scrutinized alongside volume, the two methods are worth consideration in tandem.
RES completed a 501-acre restoration project for Gallo Wineries to offset impacts from a facility expansion.
The volume must come from restoration that is properly constructed, sustained over time, and rigorously monitored.
Inside the fence line: On-site demand reduction. On a Pfizer research and manufacturing campus in Illinois, RES converted a turf-dominated landscape into a working ecological system. Bioswales, rain gardens, and detention basins capture and treat runoff, and harvested rainwater offsets irrigation and cooling demand, cutting potable water use. The campus reported up to 80 percent life-cycle cost savings compared with conventional turf, along with faster compliance through a proactive stormwater strategy. On-site work of that kind does not generate a watershed benefit on its own, but it reduces the volume the site must replenish in the first place.
Outside the fence line: Watershed-scale restoration. Off-site, that same logic shows up as permittee-responsible mitigation. In Lancaster County, South Carolina, RES completed a 501-acre restoration project for Gallo Wineries, developed as permittee-responsible mitigation to offset impacts from a manufacturing facility expansion. The work addressed erosion, improved aquatic habitat, and put the land into lasting protection: roughly 32 acres donated to the Catawba Indian Nation, with the remainder expanding the adjacent Landsford Canal State Park. RES continues to maintain and monitor the site. That combination, restoration at scale plus permanent protection and long-term monitoring, is what a defensible benefit claim rests on.
The basin is chosen when the parcel is chosen. Because a benefit must address a shared challenge within a specific catchment, the parcel decision determines what restoration is possible, what it will cost, and whether the resulting volume lands where the facility’s exposure is located. A team that runs this analysis across a shortlist of sites has options. A team that runs it after closing has one basin and whatever it contains.
Restoration runs on ecological time. A stream or floodplain project benefit takes time to design, permit, build, and establish before it generates a verifiable volume. A company holding a 2030 water target that breaks ground in 2029 has a math problem no accounting method can solve. Working backward from the target date usually puts the start of the water strategy earlier than teams expect.
Water is often the argument the community cares most about. Visible watershed investment in the community that hosts the site changes the character of a public hearing. It gives a permitting authority something concrete to weigh, and it gives neighbors a reason to see the facility as a contributor to the basin rather than only a withdrawal from it.
If you are evaluating parcels for a new Pharma manufacturing or research campus, the water questions worth answering before the land closes are specific.
Those questions are answerable early, and when they are, it’s considerably cheaper.