--- title: "Jobsite Hydration Plan: How Much Should Crews Drink?" description: "NIOSH says drink 1 cup of water every 15 to 20 minutes in the heat, and no more than 6 cups an hour. Build a written jobsite hydration plan in 7 steps." url: https://jmarsolutions.multisites.ai/guides/jobsite-hydration-plan publisher: JMAR Solutions phone: +1-214-632-7780 quote: https://jmarsolutions.multisites.ai/contact --- Field guide # A jobsite hydration plan that crews follow NIOSH says workers doing moderate activity in the heat for under 2 hours should drink 1 cup (8 oz) of water every 15 to 20 minutes. If sweating lasts several hours, NIOSH says to drink sports drinks with balanced electrolytes. Fluid intake generally should not exceed 6 cups per hour. Updated November 5, 20266 min read ## 8 oz every 15 to 20 minutes NIOSH sets this for moderate work in the heat lasting under 2 hours. ## 6 cups per hour ceiling NIOSH says fluid intake generally should not exceed 6 cups per hour. ## Cool water near the work Water should be portable, under 59°F and easy to reach. ## Electrolytes on long sweats NIOSH says to drink sports drinks with balanced electrolytes if sweating lasts for several hours. ## How much should a worker drink on a hot jobsite? NIOSH gives one clear number. For moderate activity in the heat lasting less than 2 hours, drink 1 cup (8 oz) of water every 15 to 20 minutes. NIOSH adds that fluid intake generally should not exceed 6 cups per hour. Build your plan inside those two lines. That works out to a small, steady habit, not a big drink at lunch. Thirst is a late signal. A crew that waits for thirst starts behind. A crew that sips on a schedule stays closer to even. Read more about [hydration](https://jmarsolutions.multisites.ai/glossary/hydration) and dehydration in our glossary. NIOSH hydration point What it says What to put in your plan Pace 1 cup (8 oz) of water every 15 to 20 minutes for moderate work under 2 hours A timed sip prompt on the foreman’s checklist Ceiling Fluid intake generally should not exceed 6 cups per hour A “do not force fluids” line in the talk Long sweats If sweating lasts several hours, drink sports drinks with balanced electrolytes An electrolyte plan for shifts over 2 hours Water temperature Portable and under 15°C (59°F) Insulated jugs, ice, shade for coolers Cups Individual drinking cups for each worker Cup stock at every station Avoid Alcohol and drinks with high caffeine or sugar A short “what not to bring” line ## What goes in a written jobsite hydration plan? A written plan names who brings water, where it sits, how often crews drink and what happens when someone feels sick. NIOSH tells employers to provide the means for appropriate hydration, so the plan is part of your duty to look after the crew. Keep it to one page. Use these seven steps: 1. **Estimate the volume.** NIOSH says to estimate how much water will be needed. Start with crew size, shift length and the heat forecast. Add a buffer. 2. **Name the owner.** Decide who gets the water and who checks the supplies. Write the name in the plan. 3. **Place the water.** Make water accessible near the work area. A cooler at the gate does not count when the crew is 300 feet away. 4. **Keep it cool.** Water should be under 59°F. Use ice, shade and insulated containers. 5. **Supply cups.** Give each worker an individual cup or bottle. 6. **Set the pace.** Remind crews to drink 1 cup every 15 to 20 minutes during moderate work in the heat. Use a timer, a radio call or a foreman rule. 7. **Add an electrolyte step for long sweats.** See the next section. Pair the plan with [water, rest and shade](https://jmarsolutions.multisites.ai/glossary/water-rest-shade), a work/rest schedule and [acclimatization](https://jmarsolutions.multisites.ai/glossary/acclimatization) for new hires. Hydration alone does not control heat. Our [heat stress prevention](https://jmarsolutions.multisites.ai/heat-stress-prevention) pillar shows how the pieces fit, and the heat stress program guide covers the full program. ## When do crews need electrolytes, not just water? When sweating lasts for several hours, water alone may not be enough. NIOSH says to drink sports drinks containing balanced electrolytes in that case. NIOSH also describes heat exhaustion as the body’s response to an excessive loss of water and salt, usually through excessive sweating. Sweat carries salt out with the water. A long, hot shift loses both. That is why many safety managers add an electrolyte step for shifts that run past the 2-hour mark. Compare your options in electrolytes vs water on long shifts and electrolyte drops vs sports drinks. JMAR makes Rapid Restoration Drops, a dietary supplement. The drops replace electrolytes lost in sweat and support hydration. They have no sugar and no calories, and the label lists magnesium, chloride, sodium and potassium. They are not medicine and do not replace water, rest, shade or medical care. Read the [product page](https://jmarsolutions.multisites.ai/product/rapid-rehydration-drops) for the full label and suggested use, and see [electrolytes 101](https://jmarsolutions.multisites.ai/guides/electrolytes-101). ## How do you keep crews from overdrinking? Teach the ceiling as well as the pace. NIOSH says fluid intake generally should not exceed 6 cups per hour. Drinking much more than the body loses can dilute blood sodium. Our [hyponatremia guide](https://jmarsolutions.multisites.ai/guides/hyponatremia-at-work) explains the warning signs and what a supervisor should do. Keep the message simple: - Sip on a schedule. Do not chug. - Do not force fluids on someone who feels sick. - Report headache, nausea or confusion right away. - If someone is confused or acting strangely, call 911. ## How do you check that the plan works? Check the plan at the start of every shift and after any heat event. Ask four questions: Was water at the work area? Was it cool? Did crews drink on the schedule? Did anyone report symptoms? Write the answers on the foreman’s daily sheet. NIOSH also says training should teach workers about drinking enough water and monitoring the color and amount of urine output. Use a buddy system so workers watch each other. Review the log weekly. Move water closer, add stations or change the break pattern when the log shows gaps. For a ready talk, use the heat toolbox talk script. To check how the heat itself is measured, see WBGT vs heat index. ## Does Texas require water breaks? Texas HB 2127 ended local rules in Austin and Dallas that set minimum water breaks. That does not remove your duty to protect workers. Federal OSHA can still cite heat hazards under the General Duty Clause. A written hydration plan is a practical way to show you looked after the crew. See [Texas heat rules for employers](https://jmarsolutions.multisites.ai/guides/texas-heat-rules-for-employers). This is not legal advice. ## What does a hydration day look like on a 10-hour shift? Here is an example schedule. It is an illustration, not a NIOSH table. It applies the NIOSH pace of 1 cup every 15 to 20 minutes during moderate work in the heat, and it stays under the 6-cup-per-hour ceiling. Adjust the times and the amounts with your safety team. Time Action Why Before work Toolbox talk, water and cups checked, cooler filled NIOSH says to estimate and assign water supplies First hour Sip about 1 cup every 15 to 20 minutes Sets the habit before the heat peaks Mid-morning break Rest in shade, drink, check on your buddy Rest and water breaks when a worker feels heat discomfort Midday Same pace; add an electrolyte step if sweating has lasted for hours NIOSH says to use sports drinks with balanced electrolytes for long sweats Afternoon Foreman prompts the pace, refills water stations Fatigue makes crews forget to drink End of shift Log water use, symptoms and gaps Feeds tomorrow’s plan Notice that the plan does not ask anyone to drink a large amount at once. It asks for a steady habit, with a ceiling. ## Who does what? A plan fails when everyone assumes someone else owns the water. Name the roles in writing. NIOSH says employers should decide who will get and check on water supplies, so the plan must name that person. - **Safety manager:** writes the plan, sets the pace and the ceiling, reviews the log. - **Foreman or crew lead:** runs the morning check, prompts sips, calls breaks. - **Water owner:** fills and checks the coolers, cups and ice. - **Every worker:** drinks on the schedule, tells the lead about symptoms and watches a buddy. ## What mistakes do jobsite hydration plans make? Most failures are about place and habit, not knowledge. Crews know water matters. They fail when the water is warm, far away or forgotten. Watch for these four gaps, and fix them first. - **Water too far away.** NIOSH says to make water accessible near the work area. - **Water too warm.** NIOSH says under 15°C (59°F). - **Shared cups or no cups.** NIOSH says to provide individual cups for each worker. - **Wrong drinks.** NIOSH says to avoid alcohol and drinks with high caffeine or sugar. Fix one gap per week. After a month the plan runs on its own. ## Next step Want help writing a hydration plan for your crews? [Book a 15-minute demo](https://calendly.com/jen-jmarsolutions/15-min-meeting), ask for a [free sample](https://jmarsolutions.multisites.ai/free-sample) or request bulk pricing. JMAR’s [hydration programs](https://jmarsolutions.multisites.ai/hydration-programs) include onsite toolbox talks. ## Frequently asked questions ### How much water should a worker drink in the heat? NIOSH says to drink 1 cup (8 oz) of water every 15 to 20 minutes for moderate activity in the heat that lasts less than 2 hours. Fluid intake generally should not exceed 6 cups per hour. Heavier work or longer shifts call for a written plan from your safety team. ### Is it possible to drink too much water at work? Yes. Drinking far more than the body loses can dilute blood sodium, a condition called hyponatremia. NIOSH sets a general ceiling of 6 cups per hour. See our hyponatremia guide for the warning signs and what a supervisor should do. ### Should workers drink sports drinks or electrolyte products? NIOSH says if sweating lasts for several hours, drink sports drinks containing balanced electrolytes. It also says to avoid alcohol and drinks with high caffeine or sugar. JMAR's Rapid Restoration Drops are a dietary supplement with no sugar that replace electrolytes lost in sweat. ### Who is responsible for water on a jobsite? NIOSH says employers should estimate how much water will be needed and decide who will get and check on water supplies. Name one person per crew, put the name in the plan, and check supplies at the start of each shift. ### What temperature should jobsite water be? NIOSH says water should be portable, under 15°C (59°F), and made accessible near the work area. It also says to provide individual drinking cups for each worker. Cool water, close to the crew, gets drunk more often. ## Terms on this page - [General Duty Clause](https://jmarsolutions.multisites.ai/glossary/general-duty-clause) - [Work/rest schedule](https://jmarsolutions.multisites.ai/glossary/work-rest-schedule) - [Acclimatization](https://jmarsolutions.multisites.ai/glossary/acclimatization) - [Heat exhaustion](https://jmarsolutions.multisites.ai/glossary/heat-exhaustion) - [Texas HB 2127](https://jmarsolutions.multisites.ai/glossary/texas-hb-2127) - [Buddy system](https://jmarsolutions.multisites.ai/glossary/buddy-system) - [Hyponatremia](https://jmarsolutions.multisites.ai/glossary/hyponatremia) - [Toolbox talk](https://jmarsolutions.multisites.ai/glossary/toolbox-talk) - [Dehydration](https://jmarsolutions.multisites.ai/glossary/dehydration) - [Electrolyte](https://jmarsolutions.multisites.ai/glossary/electrolyte) ## Sources 1. [CDC NIOSH: Workplace Recommendations (Heat Stress)](https://www.cdc.gov/niosh/heat-stress/recommendations/index.html) 2. [CDC NIOSH: Workplace Recommendations (Heat Stress)](https://www.cdc.gov/niosh/heat-stress/recommendations/index.html) 3. [CDC NIOSH: Workplace Recommendations (Heat Stress)](https://www.cdc.gov/niosh/heat-stress/recommendations/index.html) 4. [CDC NIOSH: Workplace Recommendations (Heat Stress)](https://www.cdc.gov/niosh/heat-stress/recommendations/index.html) 5. [CDC NIOSH: Workplace Recommendations (Heat Stress)](https://www.cdc.gov/niosh/heat-stress/recommendations/index.html) 6. [OSHA: Heat - Overview: Working in Outdoor and Indoor Heat Environments](https://www.osha.gov/heat-exposure) 7. [The Texas Tribune: Texas workers' water break rules will be eliminated as temperatures rise](https://www.texastribune.org/2023/06/16/texas-heat-wave-water-break-construction-workers/) 8. [PMC: Pathophysiology and treatment of exercise-associated hyponatremia](https://pmc.ncbi.nlm.nih.gov/articles/PMC12847173/) Checked against the sources above on November 5, 2026. Rules and guidance change, so check the linked page before you act. This page is general information, not legal or medical advice. ## Keep reading - [Electrolytes 101 for hot, hard-working crewsElectrolytes are minerals that carry an electric charge in body fluids. Sodium, potassium, magnesium and chloride help control fluid balance and support muscles and nerves. Sweat carries water and salt out of the body. On long, hot shifts, crews lose both, so a hydration plan should replace more than water.](https://jmarsolutions.multisites.ai/guides/electrolytes-101) - [Electrolytes vs water on a long shift: when is water not enough?Water is the base. NIOSH says to drink 1 cup every 15 to 20 minutes on moderate work under 2 hours, and to drink sports drinks with balanced electrolytes when sweating lasts for several hours. On a 10-hour shift, add electrolytes to the plan, and do not overdrink plain water.](https://jmarsolutions.multisites.ai/compare/electrolytes-vs-water-on-long-shifts) - [Heat stress prevention for high-risk crewsHeat stress prevention starts with water, rest and shade, then adds acclimatization for new workers, supervisor training and a written plan. NIOSH says to give workers cool water near the work area and to build up heat exposure over 7 to 14 days. Electrolytes support hydration when a crew sweats for hours.](https://jmarsolutions.multisites.ai/heat-stress-prevention) - [Hyponatremia at work: when more water hurtsHyponatremia is low blood sodium. In exercise-associated cases, the primary cause is overconsumption of fluids, which dilutes sodium in the blood. Common symptoms are bloating, nausea, vomiting, headache and altered mental status. The safest prevention is to drink according to thirst, and NIOSH caps work-in-heat intake at about 6 cups an hour.](https://jmarsolutions.multisites.ai/guides/hyponatremia-at-work) - [Texas heat rules for employers, as of November 2026As of November 2026, Texas has no state heat standard, and there is no final federal OSHA heat standard. Texas HB 2127 ended local water-break rules in Austin and Dallas. Federal OSHA still enforces heat hazards under the General Duty Clause and a revised Heat National Emphasis Program from April 10, 2026.](https://jmarsolutions.multisites.ai/guides/texas-heat-rules-for-employers) - [Liquid electrolyte drops for work crewsLiquid electrolyte drops are a concentrated mineral liquid you add to water. They replace electrolytes lost in sweat and support hydration. Rapid Restoration Drops from JMAR contain magnesium, chloride, sodium and potassium, with no sugar and no calories. They sit beside water, rest and shade, never in place of them.](https://jmarsolutions.multisites.ai/liquid-electrolyte-drops) ![Ironworkers silhouetted on a steel frame against a hot orange sunset](https://jmarsolutions.multisites.ai/_astro/sunset-steel.IhAMDca0_6wk53.webp) ## See it on your crew in 15 minutes Jennifer walks your safety team through the drops, the protocol and the numbers on a short live call. [Book a 15-minute demo](https://calendly.com/jen-jmarsolutions/15-min-meeting)