Why Your Cincinnati Tap Water Smells Like a Swimming Pool (and How to Fix It)
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If your tap water smells like a swimming pool you are not alone. Cincinnati residents often notice a strong chlorine odor in their drinking water. That sharp chemical smell comes from extra disinfection by the Greater Cincinnati Water Works and while it is generally safe it can be unpleasant. The odor happens because chlorine or chloramine is added to kill harmful bacteria and keep water safe as it travels from the treatment plant to your home. Finding the Best Water Heater Replacement for Your West Chester House.
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Why Does My Cincinnati Water Smell Like Chlorine?
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The odor comes from chlorine or chloramine added by the Greater Cincinnati Water Works. These chemicals kill harmful bacteria and keep water safe as it travels from the treatment plant to your home. Cincinnati draws most of its water from the Ohio River and the Richard Miller Treatment Plant uses a multi-step process including Granular Activated Carbon filtration and disinfection. Chlorine is added as a final step to maintain a protective residual in the pipes so water stays safe all the way to your faucet. Affordable Faucet and Sink Repairs for Families in Blue Ash.
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The smell can be stronger at certain times. The water works sometimes increases chlorine levels for seasonal flushing or after a water main break to ensure all bacteria are killed. If you live at the end of a long distribution line or on a higher floor of a building the chlorine may be more noticeable because it has not dissipated yet. Cold water often holds more dissolved chlorine so the odor can be stronger when you first turn on the tap. No Hot Water Diagnosis.
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Cincinnati water typically contains 0.5 to 2.0 parts per million of chlorine which is below the EPA limit of 4.0 parts per million but still creates a noticeable smell for many people.
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Is It Safe to Drink Water That Smells Like Chlorine?
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Yes it is safe. The EPA sets strict limits on how much chlorine can remain in drinking water. The Maximum Residual Disinfectant Level is 4.0 parts per million. Cincinnati water typically stays well below that level but even at lower concentrations the smell can be strong. The chlorine in your water is not harmful to most healthy adults but it can dry out skin and hair and affect the taste of coffee and tea.
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If you have a fish tank or use a CPAP machine you may need to remove chlorine before use. Chlorine can harm aquatic life and damage sensitive equipment. In those cases a simple activated carbon filter is enough to make the water safe for those uses.
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Cincinnati Specific Water Quality Factors
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Cincinnati water comes from the Ohio River and the Great Miami Aquifer. The river water is treated at the Richard Miller Plant in the California neighborhood. The water works uses Granular Activated Carbon filters to remove organic matter before adding chlorine. This process reduces but does not eliminate the need for disinfection chemicals. Seasonal changes in river quality such as after heavy rain can cause the water works to adjust chlorine levels to keep water safe.
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Local water is also moderately hard with calcium and magnesium from limestone bedrock. Hard water can make the chlorine smell seem stronger because minerals can react with chlorine in your pipes. If your home has older galvanized pipes the chlorine may also react with rust or sediment inside the pipes adding to the odor.
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Cincinnati’s water table sits approximately 20 to 30 feet below ground level in most areas which affects how water moves through distribution pipes and can influence chlorine concentration at different points in the system.
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DIY Fixes for Chlorine Smell
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Before calling a plumber try these simple steps to reduce the chlorine odor:
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- Let water sit in an open pitcher for a few hours. Chlorine will dissipate into the air.
- Boil water for one minute then cool it. This drives off chlorine but is not practical for large amounts.
- Use a basic activated carbon pitcher filter. These are inexpensive and remove chlorine taste and odor.
- Flush your cold water tap for a minute before using water for drinking or cooking.
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These methods help but they do not remove chlorine from all the water in your home. For a whole-house solution you need a filtration system installed at the main water line.
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Professional Filtration Solutions
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If you want to eliminate chlorine from all your water a plumber can install a whole-house activated carbon filter. These systems use large carbon tanks to remove chlorine and other chemicals before water enters your home. They are installed on the main line so every tap has filtered water. This protects your skin and hair from drying out and improves the taste of drinking water and beverages.
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For the highest level of purification a reverse osmosis system can be added under your kitchen sink. Reverse osmosis systems remove chlorine along with lead arsenic and other contaminants. They produce ultra clean water for drinking and cooking but do not filter water for showers and laundry. Many homeowners combine a whole-house carbon filter with an under-sink reverse osmosis system for complete coverage.. Read more about How to Safely Clean a Smelly Garbage Disposal in Your Fairfax Kitchen.
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The Richard Miller Plant can treat up to 240 million gallons of water per day which means even small changes in chlorine levels affect thousands of homes across Cincinnati zip codes 45202 45203 45204 and surrounding areas.
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Quick Comparison: Filtration Options
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| System Type | Coverage | Chlorine Removal | Cost Range |
|---|---|---|---|
| Pitcher Filter | Single use | Moderate | $20 – $40 |
| Under-sink RO | Drinking water only | High | $300 – $600 |
| Whole-house Carbon | All taps | High | $800 – $2,500 |
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When to Call a Professional
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If you notice a sudden change in water smell or color it could signal a problem with your plumbing or the city supply. Call a licensed plumber if: Who to Call for an Emergency Plumbing Crisis in Downtown Cincinnati.
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- The chlorine smell is extremely strong or causes eye irritation
- Your water has a yellow or brown tint
- You have low water pressure along with odor
- You live in an older home with lead pipes and want to test for contamination
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A plumber can test your water and recommend the right filtration system for your home. In Cincinnati the most common recommendation is a whole-house carbon filter because of the moderate hardness and chlorine levels in local water.
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Frequently Asked Questions
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Why does my water smell like chlorine only in the morning?
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Water sits in pipes overnight and chlorine can concentrate. Running the tap for a minute flushes out the stagnant water and reduces the smell.
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Can I use a water softener to remove chlorine?
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Standard water softeners do not remove chlorine. You need a dedicated carbon filter for that. Some modern softeners have a built-in carbon stage but check the specs.
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Does boiling remove chlorine?
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Yes boiling for one minute drives off chlorine but it is not practical for large amounts of water. Carbon filtration is more efficient.
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Is the chlorine in Cincinnati water higher than other cities?
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Cincinnati water is typical for a surface water system. The Ohio River requires careful treatment and the water works keeps chlorine at safe but detectable levels.
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Take Action Today
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Don’t let chlorine odor ruin your water experience. Call (513) 717-2899 to schedule a free water quality test and consultation. Our licensed plumbers will test your water on site and recommend the best filtration system for your Cincinnati home. Whether you need a simple carbon filter or a complete whole-house system we have you covered.
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Pick up the phone and call (513) 717-2899 before the next shower dries out your skin. Clean great tasting water is just one call away.
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For more information on Cincinnati water quality visit the Greater Cincinnati Water Works website or the EPA Safe Drinking Water Act page.
You may also find this helpful. What That Strange Rumbling Sound Inside Your Water Heater Means for Your Winton Hills Home.
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