Yes, you can put chlorine in your water tank to kill bacteria and make the water safe. However, you must use unscented, plain household bleach (sodium hypochlorite) or NSF-certified potable-grade chlorine. Never use pool chlorine tablets, which are highly acidic and contain additives toxic for drinking.
The water will be safe to drink provided the chlorine smell is not too strong. If the tank is your only source of water, it can still be desludged regularly by siphoning the sludge off. If the sediment has been stirred up, the water can be treated chemically with chlorine and/or boiled before consumption.
A general rule of thumb to shock chlorinate and disinfect a storage tank is to mix non-scented NSF-approved household bleach (5.25% chlorine) in the reservoir at the ratio of 1 gallon of bleach for every 1,000 gallons of water (i.e., 1 quart for every 250 gallons of water).
During water treatment, chlorine can combine with naturally occurring organic matter in the water to form compounds called disinfection byproducts (DBPs). DBPs can cause negative health effects after regular, long-term exposure. The EPA has set limits for several types of DBPs.
Baking soda (sodium bicarbonate) acts as a natural buffer that raises both your pool's total alkalinity and its pH. It prevents severe pH fluctuations (known as "pH bounce"), clears cloudy water, prevents equipment corrosion, and helps your chlorine sanitize more effectively.
Drinking tap water with trace levels of chlorine is generally not bad for you. At the regulated levels found in public water supplies, chlorine is non-toxic and effectively protects against harmful waterborne diseases.
There is no single “#1” healthiest water, as the ideal choice depends on your specific health and hydration needs. However, experts generally agree that naturally mineralized spring water and carbon-filtered tap water (especially when remineralized) are the best daily options.
Exposure to chlorine can lead to reactive airways dysfunction syndrome (RADS), a chemical irritant-induced type of asthma. Children may be more vulnerable to corrosive agents than adults because of the smaller diameter of their airways.
Leave the bleach solution in your fresh water tank for a minimum of 4 to 12 hours. Many experts and RV owners recommend letting it sit overnight to ensure the diluted bleach has enough time to effectively kill off any bacteria, mold, or mildew.
To sanitize a water tank, add 1/4 cup of unscented household bleach (5.25%–6% strength) for every 50 gallons of water. For a deep clean, use 1 gallon of bleach per 1,000 gallons of water. Always use plain, fragrance-free bleach without additives.
For a 275-gallon water tank or IBC tote, the amount of unscented household bleach (6% sodium hypochlorite) you need depends on your goal:
Clean and disinfect drinking water tanks annually or when inspections show it's needed. Non-drinking water tanks should also be cleaned when inspections identify a problem.
Yes, chlorine is the most widely used chemical to treat public drinking water. It is highly effective at killing harmful bacteria, viruses, and parasites—such as E. coli and Giardia—that cause immediate waterborne illnesses.
Sanitizing Procedure
Pour the bleach solution directly into the storage tank. Distribute the bleach solution throughout the tank by stirring or mixing with a clean pole or paddle. Two to three minutes of thorough mixing should suffice. Close the tank lid and all other openings.
When chlorine gas touches moist tissues (like the eyes, throat, and lungs) it creates an acid that can hurt these tissues. If high amounts are breathed in, breathing problems may show up right away. Symptoms of exposure to higher levels of chlorine include the following: Blurred vision or eye tearing.
Copper Ionization:
This technology is considered one of the most effective alternatives to chlorine in swimming pools because it uses natural copper ions to eliminate algae and bacteria without chemical disinfectants. There are no residual chemicals which can cause irritation to eyes and skin.
Chlorine water side effects vary based on exposure. While tap water contains safe, low levels, over-chlorinated water or swimming pools can trigger adverse reactions. Common issues include dry skin, eye irritation, and respiratory discomfort from inhaling chloramine gases.
Cardiologists warn against drinking from plastic bottled water primarily due to microplastics, nanoplastics, and chemical additives. These contaminants are shed from the bottles themselves and can directly impact your cardiovascular health.
The cleanest drinking water in the US is primarily found in states with pristine, naturally filtered groundwater aquifers or protected mountain watersheds. Top states include Hawaii (known for its highly pure aquifer-sourced water), Oregon (Bull Run Watershed), and Massachusetts (MWRA reservoirs).
Drinking water does not directly lower your A1C, but it acts as an essential supporting habit. Water helps your kidneys flush out excess sugar through your urine and dilutes concentrated blood sugar. Most importantly, replacing sugary drinks with water lowers calorie intake, aiding weight management and long-term A1C control.
When chlorine interacts with naturally occurring materials in water, it can create compounds called trihalomethanes (THMs) and haloacetic acids (HAAs). These are known as disinfection byproducts, and they're linked to potential health concerns like bladder cancer and issues affecting the liver and kidneys.
Chlorine in small, regulated amounts—like in drinking water or properly maintained swimming pools—is generally safe and nontoxic. However, excessive or repeated exposure can cause localized issues, primarily including:
Since it turns into a gas at room temperature, chlorine will eventually evaporate if you let your water sit before using it. How long you need to let it sit depends on the temperature. Chlorine in water sitting in the fridge will evaporate completely within 24 hours, but will do so faster in warmer temperatures.