Janitor and Custodian Hydration: A Route That Rarely Passes a Water Fountain

A janitor or custodian's shift is built around a cart and a route through building after building, often using cleaning chemicals that can irritate the throat and airway in a poorly ventilated closet or restroom — a combination of constant movement and intermittent chemical exposure that makes it easy to go an entire shift without a real water break.

A Workforce Bigger Than Most People Realize

Janitors and building cleaners are one of the largest occupations in the country — data from the Bureau of Labor Statistics' Occupational Employment and Wage Statistics program puts the workforce at roughly 2.24 million people, with a 2025 median pay of $36,840 and no formal educational credential typically required to enter the field. More than half work for building-services contractors, with elementary and secondary schools as the second-largest employer. It's a workforce doing physically demanding, often overnight or early-morning work in nearly every commercial and institutional building in the country.

The Chemical-Exposure Side of the Job

Cleaning chemicals are the part of this job that sets it apart from other standing-and-walking occupations. OSHA's Hazard Communication Standard (29 CFR 1910.1200) exists specifically because products that are safe used as labeled can become dangerous combined — state health departments have documented, for example, that mixing bleach with ammonia-based cleaners produces chloramine gases that cause coughing, shortness of breath, chest pain, and throat and eye irritation, with severe cases progressing to fluid in the lungs. Even without an accidental mixing incident, routine use of bleach- or acid-based products in a small, closed restroom or supply closet means a custodian's airway is exposed to fumes that a desk worker's never is.

Why These Hazards Aren't Hypothetical

State health departments don't flag chemical-mixing risk as a theoretical concern. New Jersey's Department of Health has documented real cases: a worker who poured an acidic drain solvent into a drain that already contained bleach released chlorine gas and ended up in an emergency room with respiratory distress, coughing, and wheezing; a restaurant employee with asthma was overcome by fumes from a bleach-and-cleaner combination accidentally mixed inside a dishwasher and later died. Those are extreme outcomes from a mixing mistake, not the routine exposure most custodians deal with day to day — but they're a useful reminder of why product labels, training, and proper ventilation matter in a job that works with these chemicals on repeat, all shift, every shift.

A Route That Rarely Passes a Water Fountain

Unlike a job with a fixed workstation, custodial work moves — floor to floor, room to room, often alone, often on an evening or overnight shift when a building's break room or water fountain is the last thing on the route. That structure makes it easy to push water off indefinitely: there's always one more room on the list before the cart gets back near a sink. Add in a closed door and limited airflow while a chemical cleaner is doing its job, and a dry, irritated throat can get mistaken for "just the fumes" rather than a sign it's time to actually drink something.

A Practical Hydration Routine That Fits the Route

The simplest fix is making water part of the cart setup rather than a separate errand: a full bottle clipped to or riding alongside the cleaning cart means it travels the same route the job already requires, with no detour needed. Taking a few sips at the natural transition points — finishing one room, moving to the next, stepping out of a space that's just been treated with a strong-smelling product — turns hydration into something that happens automatically instead of something that has to be remembered on top of everything else on the list.

Shop NuRich

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This article is for general informational purposes only and is not medical advice or workplace safety guidance. Never mix cleaning chemicals, and always follow product labels and your employer's safety data sheets — anyone experiencing breathing difficulty, chest pain, or persistent throat or eye irritation after chemical exposure should seek medical attention.

Sources: Bureau of Labor Statistics Occupational Employment and Wage Statistics, via Data USA, "Janitors & Building Cleaners" • datausa.io/profile/soc/janitors-building-cleaners • BLS Occupational Outlook Handbook, "Building and Grounds Cleaning Occupations" • bls.gov/ooh/building-and-grounds-cleaning/ • New Jersey Department of Health, Hazard Alert: Mixing Cleaners • nj.gov/health/workplacehealthandsafety • OSHA Hazard Communication Standard, 29 CFR 1910.1200