Reclaimed Water - The Second-Pipe Advantage

The next generation of AI campuses may be built where treated wastewater can move as reliably as power and fiber.

Most discussions about AI and water begin with the same question:

How much water will the data center use?

It is an important question.

But it may not be the most strategic one.

A better question is:

What kind of water will the data center use?

Drinking-quality water is not always required to cool computing infrastructure. Municipal wastewater, industrial process water and previously used cooling water can be treated and returned to productive use.

The water already exists.

The challenge is capturing it, treating it, moving it and delivering it reliably enough for a multibillion-dollar AI campus.

That requires more than a sustainability commitment.

It requires another layer of physical infrastructure.

Treatment plants. Storage tanks. Pumps. Monitoring systems. Reclaimed-water pipelines. Utility agreements. Backup supplies. Operating standards. Trained workers. Capital.

Together, these systems could create one of the next major competitive advantages in AI site selection.

This is the Second-Pipe Advantage™.

The Short Answer

Reclaimed water is wastewater or previously used water that has been treated so it can serve another beneficial purpose.

The Environmental Protection Agency uses the terms water reuse, water recycling and water reclamation to describe the treatment and repurposing of wastewater or stormwater for uses such as irrigation, industrial processes and water-supply replenishment. U.S. Environmental Protection Agency

For data centers, reclaimed water can sometimes replace potable water in cooling systems.

That Can:

• Preserve drinking water for homes and businesses

• Reduce pressure on municipal water supplies

• Create a more drought-resilient industrial source

• Reduce wastewater discharge

• Generate revenue for water utilities

• Improve the public credibility of new AI projects

• Make water-constrained regions more competitive

But reclaimed water is not automatically available because a wastewater-treatment plant is nearby.

It must be treated to the required standard, transported to the site and supplied with the reliability an always-on computing facility requires.

That is where the infrastructure opportunity begins.

The Signal

The largest cloud companies are beginning to scale water reuse across their data-center portfolios.

Amazon currently uses recycled water for cooling at 24 data centers and plans to expand the practice to more than 120 US locations by 2030. The company expects the expansion to preserve more than 530 million gallons of drinking water annually. Amazon

In Mississippi, Amazon’s Canton campus is expected to transition entirely to recycled wastewater for water-based cooling beginning in 2027. The system is expected to reuse an average of 83 million gallons each year. Amazon Mississippi

Microsoft has used reclaimed or recycled water in Texas, Washington, California and Singapore. In January 2026, the company said it would support policies intended to make reclaimed and industrial recycled water the default supply for data centers wherever feasible. Microsoft

The federal government is moving in the same direction.

The EPA’s Water Reuse Action Plan 2.0 includes initiatives to help states permit recycled water for data-center cooling, address regulatory barriers and establish an AI-focused center for water-reuse knowledge. EPA Water Reuse Action Plan 2.0

The signal is larger than a collection of corporate sustainability projects.

Reclaimed water is becoming part of the infrastructure strategy behind AI growth.

The Potable-Water Mismatch

Municipal drinking water is treated to meet standards designed for human consumption.

That treatment is essential when water is delivered to homes, schools, hospitals and restaurants.

It may represent a mismatch when the water’s purpose is carrying heat away from computing equipment.

Data-center cooling systems still require carefully controlled water quality. Minerals, biological contaminants and chemicals can cause scaling, corrosion, fouling and equipment damage.

But the water does not necessarily need to come from the same system supplying kitchen faucets.

Reclaimed water creates the possibility of separating those demands.

One network continues delivering potable water to the community.

Another delivers treated non-potable water to industrial users.

This second network is sometimes identified by purple pipes, the color widely used to distinguish reclaimed-water infrastructure from drinking-water systems.

For AI infrastructure, that second pipe can become just as strategically important as the first.

What Reclaimed Water Actually Requires

Water reuse is sometimes described as though wastewater can simply be redirected from a treatment plant to a data center.

The real system is more complicated.

A dependable reuse program requires several interconnected layers.

1. A Reliable Water Source

Municipal wastewater provides a relatively continuous source because communities generate it every day.

But availability still varies.

Population growth, conservation measures, seasonal demand, industrial discharge and treatment-plant operations can all affect supply and water quality.

A utility must determine how much reclaimed water it can provide without compromising its other responsibilities or promising the same capacity to multiple customers.

The supply must be measured, modeled and contractually allocated.

2. Fit-for-Purpose Treatment

Reclaimed water must be treated for its intended use.

The required process may include filtration, disinfection, chemical treatment, membrane systems, ultraviolet light, ozone or other technologies.

The treatment standard depends on the water source, the cooling design, public-health requirements and state regulations.

Water used in an open cooling tower may require different controls from water circulating inside a sealed loop.

The objective is not always to create drinking water.

It is to create water that is safe, compliant and suitable for the equipment it will serve.

3. Conveyance Infrastructure

The water must then reach the data center.

That Can Require:

• Dedicated reclaimed-water pipelines

• Easements and rights-of-way

• Pump stations

• Storage tanks

• Pressure-management systems

• Metering equipment

• Valves and cross-connection controls

• Road or waterway crossings

• Connections across multiple jurisdictions

Distance matters.

A data-center property located near a treatment facility may still face significant costs if no reclaimed-water distribution network reaches the site.

4. On-Site Integration

The campus must be designed to receive and manage a source whose characteristics can vary.

That may require additional filtration, chemical treatment, storage, monitoring and operational controls.

Operators must manage mineral concentration, corrosion, biological growth and cooling-system discharge.

The facility may also need separate plumbing for potable and non-potable uses, with safeguards preventing cross-connections between the systems.

5. Backup Reliability

AI infrastructure cannot simply shut down when a reclaimed-water pump fails.

The site needs a resilience plan.

That might include on-site storage, multiple reclaimed-water connections, alternative cooling modes or access to an emergency potable supply.

This creates an important planning tension.

A project may operate primarily on reclaimed water but still require municipal drinking-water capacity as backup.

Communities should understand both the expected demand and the contingency demand before approving service.

The Reclaimed-Water Illusion

A wastewater plant on a map can create the same false confidence as a fiber line or transmission corridor.

The resource may be nearby without being available.

The treatment facility may lack excess capacity. The water may not meet the required quality. The pipeline may not extend to the project. Pumping pressure may be inadequate. Another industrial customer may already control the available supply.

The local regulatory framework may not allow the proposed use without additional review.

Loudoun Water, which serves the largest US data-center market, explicitly notes that reclaimed-water supply and hydraulic constraints can limit or exclude proposed connections. Capacity allocations remain subject to the utility’s system requirements and long-term operating goals. Loudoun Water

The lesson is straightforward:

Reclaimed water near a property is not the same as reclaimed water available to the property.

A credible assessment must examine treatment capacity, delivery infrastructure, operating pressure, water quality, contractual allocation and backup reliability.

City Watch: Quincy, Washington

Quincy offers one of the clearest examples of reclaimed water becoming strategic infrastructure.

Microsoft and the City of Quincy partnered to construct a system that captures cooling water from a Microsoft data center, treats it and recirculates it for further cooling.

The Quincy Water Reuse Utility began operating in 2021 after more than a decade of development. The system cost approximately $31 million and is estimated to offset 138 million gallons of potable groundwater demand annually. EPA Quincy case study

The project solved more than a water-volume problem.

Local groundwater contains high concentrations of dissolved minerals that can create difficulties in cooling equipment. According to the EPA, the treated water delivered by the reuse system can be better suited to the data center’s cooling requirements than the area’s mineral-rich groundwater.

That is an important distinction.

Water reuse is not always a compromise made for sustainability.

With the right treatment system, it can improve the quality and reliability of the industrial water supply.

Quincy also demonstrates why these projects take time.

The infrastructure required coordination among the city, the data-center operator, engineers, regulators and the water utility. It required funding, construction and a long-term operating model.

The water may have already existed.

The usable supply had to be created.

Market Watch: Loudoun County

Northern Virginia shows what happens when reclaimed water develops into a network rather than a single project.

Loudoun Water constructed its first reclaimed-water pipelines in 2010 to supply irrigation and industrial cooling in the region’s expanding data-center market.

That network has grown to approximately 20 miles.

In 2025, Loudoun Water delivered more than 750 million gallons of reclaimed water to customers, preserving an equivalent amount of potable drinking water while reducing nutrient discharges to the Potomac River and Chesapeake Bay. Loudoun Water

This is the Second-Pipe Advantage in physical form.

A community with an established reclaimed-water network can offer something that cannot be created through an incentive package alone:

An alternative industrial water source already connected to the market.

That infrastructure can lower project risk, preserve potable capacity and make additional sites more credible.

Just as a major substation can attract energy-intensive industry, a well-positioned reclaimed-water network can create its own development corridor.

Company Watch: Veolia

The AI infrastructure market is creating opportunities beyond data-center developers and cooling-equipment manufacturers.

Veolia is working with Amazon to develop the reclaimed-water cooling system supporting Amazon’s operations in Mississippi. The system is expected to reuse approximately 83 million gallons annually once fully operational. Veolia Water Technologies

The partnership highlights an important part of the emerging supply chain.

Reclaimed-water infrastructure requires expertise in treatment design, equipment, chemistry, monitoring, system integration and long-term operations.

That puts companies such as Veolia, Xylem, Ecolab, Veralto, Pentair and Grundfos on the water-infrastructure watchlist.

These companies may not build the AI models or own the data centers.

They provide the systems that help make large-scale computing possible in water-constrained markets.

Everyone is watching the servers.

I’m watching the treatment train.

The Second-Pipe Advantage

Communities have traditionally marketed water readiness by describing the capacity of their potable systems.

The AI era requires a broader view.

A region may possess a Second-Pipe Advantage when it can demonstrate:

Reliable Effluent + Fit-for-Purpose Treatment + Delivery Infrastructure + Contracted Capacity + Backup Resilience

Each component matters.

Reliable effluent creates the source.

Treatment makes the source usable.

Pipelines and pumps make it accessible.

Contracts make the supply credible.

Backup systems make it operationally dependable.

When these systems align, reclaimed water becomes more than an environmental feature.

It becomes economic-development infrastructure.

Water Reuse Can Create a New Utility Model

Data-center water demand is often framed as a burden placed on local utilities.

Reclaimed water creates the potential for a different relationship.

A large industrial customer may help finance treatment upgrades, pipelines, storage and monitoring systems that the community could not otherwise build as quickly.

The utility gains a new revenue stream.

The data center gains a dedicated industrial supply.

The community preserves drinking-water capacity.

The environment may benefit from reduced wastewater discharge.

That does not mean every project produces a positive outcome.

The costs, risks and public benefits must be evaluated transparently. Infrastructure agreements must clarify who pays for construction, maintenance, expansion and backup capacity.

But the underlying opportunity is significant.

AI investment could become a catalyst for water-system modernization when the agreement is structured around shared infrastructure rather than a single customer’s consumption.

Reclaimed Water Is Not Unlimited Water

Water reuse is an important strategy.

It is not a permission slip for unlimited development.

Reclaimed-water availability is still connected to local hydrology, population, treatment capacity and infrastructure.

The source may become constrained during system maintenance. Treatment standards may change. Population patterns may alter wastewater flows. New customers may compete for the same capacity. Pumping and advanced treatment also require electricity.

A project that uses reclaimed water can still affect community systems through its backup demand, wastewater discharge, construction requirements and infrastructure costs.

That is why the correct question is not simply:

Does the project use reclaimed water?

Leaders should ask:

How much is available, how reliably can it be delivered and what happens when the system is unavailable?

The word “reclaimed” does not replace due diligence.

Water Across the Eight Pillars

The Second-Pipe Advantage connects water to every part of the Infrastructure of Intelligence™.

Power is required to pump, treat and distribute reclaimed water.

Connectivity enables sensors, meters and treatment systems to be monitored in real time.

Land determines whether pipelines, storage facilities and treatment equipment can reach the campus.

Workforce provides the plant operators, engineers, technicians and construction crews required to keep the system operating.

Policy establishes treatment standards, approved uses and permitting requirements.

Capital finances treatment plants, pipelines, storage and on-site infrastructure.

Sustainability measures whether the project reduces potable demand, protects the watershed and improves long-term resilience.

Water reuse is not an isolated environmental program.

It is a coordinated infrastructure system.

What Leaders Should Start Asking

Communities, utilities and developers should move beyond asking whether reclaimed water exists.

They Should Ask:

• How much wastewater does the region produce today?

• How much of that flow is available for reuse?

• What competing uses already exist?

• What treatment level is currently provided?

• What additional treatment would data-center cooling require?

• How far is the treatment facility from the proposed campus?

• Does a reclaimed-water pipeline already reach the site?

• What pumping pressure and daily volume can the system provide?

• Who would fund new pipelines, pumps and storage?

• What rights-of-way would be required?

• How will water quality be monitored?

• Who carries responsibility if water quality damages equipment?

• What backup supply would the campus require?

• Could several industrial users share the infrastructure?

• What happens to demand during extreme heat?

• How would the project affect utility customers and local rates?

• Can the investment improve the broader community water system?

• What expansion capacity would remain after the project is operational?

These questions separate a sustainability claim from an infrastructure strategy.

The Golden Nugget

Wastewater at the treatment plant is not reclaimed water at the campus.

The strategic asset is the complete delivery system: treatment, pipelines, pumping, storage, contracted capacity and backup reliability.

That is what turns previously used water into usable infrastructure.

The IOI Take

The next competition for AI infrastructure will not be limited to megawatts, fiber routes and powered land.

It will also involve alternative water networks.

Communities that begin mapping wastewater flows, treatment capacity, industrial demand and reclaimed-water corridors may uncover an asset they did not realize they had.

The strongest markets will not simply promise that water is available.

They will show which water will be used, how it will reach the campus and why the system will remain reliable during drought, growth and extreme heat.

That is the Second-Pipe Advantage.

It preserves the first pipe for the community while creating another pathway for economic development.

One Last Thought

The Intelligence Economy will generate enormous amounts of heat.

It does not always need fresh drinking water to carry that heat away.

Some of the water AI needs may already be moving beneath the community, heading toward a treatment plant.

The opportunity is to give that water another job.

The first pipe supports the people who live there.

The second may help build the economy growing around them.

Workforce

Policy

Capital

Sustainability