Columbus weighs recycled wastewater for data centers as utility demand rises
Columbus officials are exploring reclaimed wastewater for data-center cooling as the city plans for rising water demand and major utility investments.
Columbus is exploring whether reclaimed wastewater could help cool future data centers, a discussion that ties directly to the city’s larger water-planning challenges as demand keeps rising.
Axios Columbus reported May 6 that city officials are looking at whether treated wastewater, rather than drinking water, could be used for some data-center cooling needs. The idea is still in an early stage. It is not being described as an approved citywide program, and there is no indication that Columbus has finalized a policy change or contract tied to the concept.
That distinction matters. For residents, the question is not just whether a new use is technically possible. It is whether Columbus can accommodate large industrial water users without putting extra pressure on the drinking-water system, utility planning, or future costs.
Why reclaimed water is part of the discussion
Reclaimed wastewater is water that has already gone through treatment and can be reused for certain non-drinking purposes. In this case, the possible use being discussed is cooling data-center equipment, which can require significant water resources depending on the design.
Water use at data centers has become a bigger issue in Ohio and other fast-growing markets because these facilities can add to infrastructure demand even when they do not use the same kind of public services as a neighborhood or retail development. The broader policy question is how to support growth while protecting drinking-water capacity and keeping utility systems reliable.
Spectrum News 1 recently reported on how data centers use water, underscoring why that issue is drawing attention across the state. In Columbus, the city is also thinking about longer-term utility needs at the same time it weighs how to serve new development.
Columbus is already planning for bigger utility needs
City utility materials add important background. Columbus Water and Power’s 2026 rates and fees page notes long-range planning that includes a fourth water plant. That is a sign that city leaders are already preparing for future demand, population growth, and the infrastructure needed to keep water service stable.
The city’s Division of Water Reclamation also shows that Columbus already has wastewater treatment and reuse infrastructure in place, which helps explain why reclaimed-water ideas are being discussed at all. The city’s sustainability materials similarly point to ongoing utility planning around efficiency and resource use.
For residents and business owners, the practical stakes are straightforward:
- Will growth add pressure to water supply and treatment systems?
- Could reclaimed water reduce the need to use drinking water for industrial cooling?
- What new infrastructure would be needed, and who would pay for it?
- How might these choices affect long-term utility costs and development capacity?
For now, the proposal should be treated as an exploration, not a final policy. That means the next step to watch is whether Columbus moves from discussion into a formal pilot, council action, utility decision, or a specific data-center proposal that spells out water requirements and infrastructure needs.
If the idea advances, it could become part of how Columbus manages major industrial growth while trying to preserve drinking-water resources for homes, schools, and everyday use.
