Your Office Has Two Water Problems. They're the Same Problem.

Most offices treat water contamination and employee hydration as two separate conversations. Facilities handles one. HR handles the other. They never meet.

They should. Because the first one shapes the second.

Quick disclosure before I go further: I sell bottleless water systems for a living. Greater Madison. That's my bias and you should read this knowing it. But the research below isn't mine, and every link goes to a federal agency or a university.

Problem one: what's in it

In April 2024, the EPA finalized the first national, legally enforceable drinking water standard for PFAS, setting limits of 4.0 parts per trillion for PFOA and PFOS individually, plus limits for PFHxS, PFNA, GenX chemicals and mixtures. (Update, September 2026: in May 2026 EPA proposed rescinding the PFHxS, PFNA, GenX and mixture limits and proposed letting systems request until 2031 to meet the PFOA and PFOS limits, which stay at 4.0 ppt. Final action was still pending when I checked.)

Four parts per trillion. That's a number you set when the safe amount is basically zero.

A 2023 USGS study that sampled tap water nationwide estimated at least 45% of U.S. tap water contains one or more PFAS compounds. The CDC calls them "forever chemicals" because they break down very slowly and build up in people and the environment — most Americans have already been exposed and carry some in their blood.

NIEHS says the research to date shows possible links between certain PFAS and altered metabolism and body-weight regulation, increased risk of some cancers, and a reduced ability of the immune system to fight infections; the National Toxicology Program concluded PFOA and PFOS suppress the antibody response in humans. ATSDR's list adds higher cholesterol, liver-enzyme changes, pregnancy-induced hypertension, small decreases in birth weight, and kidney and testicular cancer for PFOA.

That's problem one. It's the one that gets headlines.

Problem two: how much of it people drink

The National Academies' 2004 benchmark for total daily water from all beverages and food is about 3.7 liters for men and 2.7 liters for women. Nobody in a normal office is tracking that. Fine.

But here's what happens when people fall short. A widely cited review in Nutrition Reviews, hosted by the NIH library, discusses evidence that mild dehydration — on the order of 1–2% of body water — can degrade cognitive performance: attention, short-term memory, mood. Exactly the stuff desk work runs on.

Part of why small deficits matter: water is about 60% of an adult's body weight, and the brain and heart are roughly 73% water.

Harvard's Nutrition Source is blunt about the fix — water is the recommended default beverage, and thirst plus urine color are good enough practical indicators for most people. You don't need an app.

The connection that gets missed

Here's my own read on it, and I'll flag it as observation rather than data: people don't drink water they don't trust. Or don't like. They walk past the fountain, refill the coffee, buy a soda at 2 p.m., and go home having drunk less water than they meant to.

That's not being dramatic. They read the same PFAS headlines everyone else did. When the only free water in the building comes out of a tap with a warm metallic taste and no visible filtration story, drinking something else is a pretty rational response.

So the contamination problem can quietly turn into a hydration problem. And if the research on mild dehydration is right, that's the kind of thing that shows up as afternoon fog rather than as anything anyone reports to HR.

You probably can't fix problem two with posters. Telling people to hydrate more while the water tastes off is asking them to override their own instincts.

What that actually means for September

It's budget season. Facilities is pricing filtration. HR is pricing wellness. There's a decent chance both line items are chasing the same outcome and neither one knows it.

The honest version of this: filtration isn't only a health hedge against contamination risk. It's also the thing that makes people willing to drink the water in the first place. The safety case is documented. The behavior change is the part you'd notice on a Tuesday afternoon.

I sell the equipment, so of course I'd say that. But the ordering matters more than the vendor. Make the water good, then people drink it. Skip step one and step two gets a lot harder, no matter how many hydration challenges you run.