Is Oklahoma City, Oklahoma Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Last updated: April 2026.
Is Oklahoma City, Oklahoma Shower Water Safe?
Population: 702,767 · Water Source: Lake Hefner, Lake Overholser, Lake Stanley Draper, Canton Lake
For the 702,767 residents of Oklahoma City, understanding what's in your shower water is crucial for well-being in 2026. While Oklahoma City's tap water meets federal safety standards for drinking, the unique conditions of showering can expose you to contaminants that impact your skin, hair, and respiratory health.
💧 Where Does Oklahoma City's Water Come From?
Primary Source: Lake Hefner, Lake Overholser, Lake Stanley Draper, Canton Lake
Oklahoma City draws its primary drinking water from a network of surface lakes: Lake Hefner, Lake Overholser, Lake Stanley Draper, and Canton Lake. This comprehensive system ensures a robust supply, with water undergoing extensive treatment processes to meet safety standards before distribution.
Treatment: Coagulation, Flocculation, Sedimentation, Filtration, Chloramination
🔬 What's In Oklahoma City's Shower Water?
Here are the key contaminants detected in Oklahoma City's water supply based on real testing data from the EWG Tap Water Database:
| Contaminant | Level Found | EPA Limit | EWG Guideline | Status |
|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) | 0.0000 ppt | 1e-05 ppt | 0.0000 ppt | ⚠️ Exceeds EWG Health Guideline (3300x above) |
| Arsenic | 8.00 ppb | 10.0 ppb | 0.0040 ppb | ⚠️ Exceeds EWG Health Guideline (2000x above) |
| Haloacetic acids (HAA9) | 62.86 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (1048x above) |
| Chromium (hexavalent) | 15.14 ppb | No federal limit | 0.020 ppb | ⚠️ Exceeds EWG Health Guideline (757x above) |
| Total trihalomethanes (TTHMs) | 54.74 ppb | 80.0 ppb | 0.150 ppb | ⚠️ Exceeds EWG Health Guideline (365x above) |
| Haloacetic acids (HAA5) | 30.54 ppb | 60.0 ppb | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (305x above) |
| Bromodichloromethane | 13.31 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (222x above) |
| Dibromochloromethane | 17.15 ppb | No federal limit | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (172x above) |
| Dibromoacetic acid | 4.73 ppb | No federal limit | 0.030 ppb | ⚠️ Exceeds EWG Health Guideline (158x above) |
| Trichloroacetic acid | 12.75 ppb | No federal limit | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (127x above) |
Contaminant Details
Perfluorohexane sulfonate (PFHXS)
The health guideline of 0.001 ppt for perfluorohexane sulfonate was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline harm to the developing immune system.
Comparison: State average: 0.0000 ppt. National average: 0.0000 ppt.
Shower Impact: Contaminants in shower water can be absorbed through the skin and inhaled as steam, increasing your daily exposure beyond what you get from drinking water alone.
Arsenic
The health guideline of 0.004 ppb for arsenic was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
Comparison: State average: 0.553 ppb. National average: 0.624 ppb.
Shower Impact: Arsenic in shower water can be absorbed through the skin. Long hot showers increase exposure time and absorption.
Haloacetic acids (HAA9)
The health guideline of 0.06 ppb for haloacetic acids (HAA9) was defined by EWG . This health guideline protects against cancer.
Comparison: State average: 34.90 ppb. National average: 23.70 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
Chromium (hexavalent)
The health guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
Comparison: State average: 2.60 ppb. National average: 0.440 ppb.
Shower Impact: Hexavalent chromium can be absorbed through the skin during bathing, adding to overall exposure beyond drinking water.
Total trihalomethanes (TTHMs)
The health guideline of 0.15 ppb for trihalomethanes was defined by in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level. as a draft public health goal, the level of drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
Comparison: State average: 41.78 ppb. National average: 29.06 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
Haloacetic acids (HAA5)
The health guideline of 0.1 ppb for haloacetic acids (HAA5) was defined by as . This health guideline protects against cancer.
Comparison: State average: 21.86 ppb. National average: 19.82 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
Bromodichloromethane
The health guideline of 0.06 ppb for bromodichloromethane was defined by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
Comparison: State average: 9.76 ppb. National average: 5.89 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
Dibromochloromethane
The health guideline of 0.1 ppb for dibromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
Comparison: State average: 5.19 ppb. National average: 3.55 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
Dibromoacetic acid
The health guideline of 0.03 ppb for dibromoacetic acid was defined by as . This health guideline protects against cancer and harm to fetal growth and development.
Comparison: State average: 1.36 ppb. National average: 1.13 ppb.
Shower Impact: Contaminants in shower water can be absorbed through the skin and inhaled as steam, increasing your daily exposure beyond what you get from drinking water alone.
Trichloroacetic acid
The health guideline of 0.1 ppb for trichloroacetic acid was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
Comparison: State average: 8.56 ppb. National average: 6.57 ppb.
Shower Impact: These disinfection byproducts become airborne in hot shower steam. You can inhale and absorb them through your skin, potentially increasing your exposure beyond just drinking water.
🧴 How Oklahoma City's Water Affects Your Skin, Hair & Health
When you shower, contaminants in the water don't just wash off — they're absorbed through your skin and inhaled as steam. Here's how Oklahoma City's water quality may be affecting you:
🧖 Skin Effects
- Dryness and irritation, especially for eczema sufferers
- Exacerbation of skin conditions due to mineral residue and chemical exposure
- Premature aging and loss of skin elasticity from chemical exposure
- Formation of soap scum that clogs pores and dulls skin
💇 Hair Effects
- Increased hair breakage and brittleness
- Dull, lifeless hair with residue buildup
- Color fading in treated hair due to chemical reactions
- Difficulty lathering shampoo and rinsing thoroughly
🫁 Respiratory Effects
- Irritation of nasal passages and lungs from chloramine vapors and DBPs
- Exacerbation of asthma and other respiratory sensitivities
- Dryness of mucous membranes in the throat and lungs
- Potential long-term respiratory issues from chronic inhalation of volatile contaminants
✅ What You Can Do About It
Test Your Home's Water
A professional water test provides precise data on contaminants specific to your home's plumbing, revealing issues like lead leaching or localized DBP levels.
Install a Quality Shower Filter
Shower filters effectively reduce chloramines, chlorine, and some disinfection byproducts, significantly improving water quality for skin, hair, and respiratory health.
Shorten Shower Times and Lower Temperature
Reducing exposure time and using cooler water minimizes the vaporization of volatile contaminants like TTHMs and HAA5s, lessening inhalation and skin absorption.
Moisturize Immediately After Showering
Applying moisturizer to damp skin helps lock in hydration, counteracting the drying effects of hard water and residual chemicals.
Consider a Whole-House Filter
For comprehensive protection against a wider range of contaminants at every tap, a whole-house filtration system offers the most thorough solution.
Protect Your Skin & Hair From Oklahoma City's Water
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Related Reading
Is Oklahoma City tap water safe to shower in?
Oklahoma City's tap water meets federal drinking water standards, making it generally safe for showering. However, common disinfectants like chloramines and their byproducts, along with hardness minerals, can still cause skin, hair, and respiratory irritation for sensitive individuals or over time.
Why does my skin feel dry after showering in Oklahoma City?
Oklahoma City's water is moderately hard, meaning it contains higher levels of calcium and magnesium. These minerals, along with chloramines, can strip natural oils from your skin and leave a residue, leading to dryness, irritation, and exacerbating conditions like eczema.
Do I need a shower filter in Oklahoma City?
While not strictly necessary for basic safety, a shower filter is highly recommended for health-conscious consumers and those with skin or hair issues. It can significantly reduce chloramines, disinfection byproducts, and other impurities that contribute to dryness, irritation, and respiratory concerns.
What are 'disinfection byproducts' and are they in OKC water?
Disinfection byproducts (DBPs) like TTHMs and HAA5s are formed when disinfectants like chloramines react with organic matter in the water. Yes, they are present in Oklahoma City's water, typically below EPA limits, but exposure through inhalation and skin absorption during showering is a concern.
How does hard water in Oklahoma City affect my hair?
Hard water minerals react with shampoo to form a sticky scum that coats hair strands, making them dull, brittle, and difficult to manage. This buildup can also prevent proper cleansing, leading to an oily scalp and dry ends, and can cause color-treated hair to fade faster.
