What is data center water management?
Data center water management is the planning, permitting, operation and compliance of every water system a campus depends on: drinking water supply, cooling and process water, recycled water, fire service and stormwater. Exodus handles all of it for data center campuses nationwide, from implementation through day to day operations.
Do data centers need water permits?
Usually several, depending on the state and the site. A campus that supplies drinking water from its own well can need a public water system permit, recycled water use needs state approval where it is allowed, construction that disturbs one acre or more needs Clean Water Act stormwater coverage, and the water supplier must accept your backflow protection. We map the permits your site needs and prepare the submittals.
How should a data center engage the community about water use?
Early and in both directions: public meetings before permits are filed, clear information about water sources and use, and one point of contact for neighbors, officials and the local water utility. We plan and run that outreach alongside the technical work, so the community hears the same facts the regulators see.
Do you work outside California?
Yes. We support data center campuses across the United States. Water system permits, cross-connection rules and operator certifications are set state by state, so every engagement starts by mapping the requirements of your state and your water supplier.
Do data centers need backflow protection?
In most cases, yes. Water suppliers protect the public system through state and local cross-connection programs, and campuses with several service connections, wells, recycled water or treated process water usually need a reduced pressure assembly or an air gap. California, for example, lists premises with more than one service connection, an auxiliary supply or recycled water as high hazard.
How often do backflow assemblies need testing?
Most states and water suppliers require a test at least once a year and after any repair, by a certified tester. In California an assembly that fails must be repaired or replaced within 30 days.
Our campus has its own well. Are we a public water system?
Possibly. Under federal rules (40 CFR 141.2), a system that serves water for human consumption to an average of 25 people a day for at least 60 days a year, or has 15 or more service connections, is a public water system. If it serves the same 25 or more people for more than six months a year, it is a nontransient noncommunity system with permit, monitoring and reporting duties.
Can we use recycled water for cooling?
Where your state allows it, often yes. In California, Title 22 Section 60306 allows cooling towers on disinfected tertiary recycled water, with a drift eliminator and a biocide to control Legionella where mist can reach people. Every state sets its own conditions, and we work through them with you and your supplier.
Does a data center need stormwater permits?
During construction, almost always: disturbing one acre or more needs Clean Water Act permit coverage and a stormwater pollution prevention plan. Industrial stormwater permits are tied to listed industry categories, and data centers are generally not one of them, although a state can require coverage case by case.
Are data center water rules changing?
Yes, in several states. In September 2026 California signed a package of data center bills, including AB 2469 and AB 1577, which add water use disclosure and reporting requirements. Clean records of where your water comes from and how it is protected make new reporting easier.
What credentials does your team hold?
Our team includes certified Cross-Connection Control Specialists, certified backflow prevention assembly testers, AWWA certified water audit validators and certified stormwater staff. Exodus is registered for federal work (SAM UEI YSEPR7ZKJLJ7, CAGE 21HX0).