Is Houston, Texas Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Is Houston, Texas Shower Water Safe?
Population: 2,314,157 · Water Source: Lake Houston, Lake Livingston, Trinity River
For Houston residents in 2026, understanding what's in your shower water is crucial for your health and well-being. While Houston's tap water meets federal safety standards for drinking, the chemicals and minerals present can still impact your skin, hair, and respiratory health during showering.
💧 Where Does Houston's Water Come From?
Primary Source: Lake Houston, Lake Livingston, Trinity River
Houston's water supply primarily comes from surface water sources: Lake Houston, Lake Livingston, and the Trinity River. This water undergoes extensive treatment at facilities like the Northeast Water Purification Plant to meet drinking water standards, serving over 2.3 million residents. The treatment process is designed to remove contaminants, but some byproducts and minerals remain.
Treatment: Chloramination, Coagulation, Sedimentation, Filtration
🔬 What's In Houston's Shower Water?
Here are the key contaminants detected in Houston'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 (4150x above) |
| Haloacetic acids (HAA9) | 49.59 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (827x above) |
| Perfluorooctane sulfonate (PFOS) | 0.0000 ppt | 4e-06 ppt | 0.0000 ppt | 🚨 ABOVE EPA LIMIT (18x above) |
| Arsenic | 12.27 ppb | 10.0 ppb | 0.0040 ppb | 🚨 ABOVE EPA LIMIT (3069x above) |
| Total trihalomethanes (TTHMs) | 71.40 ppb | 80.0 ppb | 0.150 ppb | ⚠️ Exceeds EWG Health Guideline (476x above) |
| Haloacetic acids (HAA5) | 45.07 ppb | 60.0 ppb | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (451x above) |
| Bromochloroacetic acid | 8.07 ppb | No federal limit | 0.020 ppb | ⚠️ Exceeds EWG Health Guideline (403x above) |
| Dibromoacetic acid | 9.50 ppb | No federal limit | 0.030 ppb | ⚠️ Exceeds EWG Health Guideline (317x above) |
| Bromodichloromethane | 16.53 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (275x above) |
| Chromium (hexavalent) | 3.19 ppb | No federal limit | 0.020 ppb | ⚠️ Exceeds EWG Health Guideline (160x 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.
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: 23.90 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.
Perfluorooctane sulfonate (PFOS)
The health guideline of 0.3 ppt for PFOS 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 cardiovascular harm and harm to fetal growth.
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: 0.942 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.
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: 25.58 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: 12.54 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.
Bromochloroacetic acid
The health guideline of 0.02 ppb for bromochloroacetic acid was defined by as . This health guideline protects against cancer.
Comparison: State average: 3.82 ppb. National average: 2.80 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: 2.64 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.
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: 6.50 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.
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: 0.320 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.
🧴 How Houston'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 Houston's water quality may be affecting you:
🧖 Skin Effects
- Dryness and irritation
- Exacerbation of eczema and sensitive skin conditions
- Redness and itchiness
- Premature aging due to oxidative stress from chlorine
💇 Hair Effects
- Dry, brittle, and dull hair
- Color fading in treated hair
- Scalp irritation and flakiness
- Increased hair breakage and frizz
🫁 Respiratory Effects
- Inhalation of chloramine and DBP vapors
- Asthma and allergy exacerbation from steam
- Irritation of nasal passages and throat
- Potential long-term respiratory issues from chronic exposure
✅ What You Can Do About It
Test Your Water
A professional water test provides a detailed report of contaminants specific to your home, guiding you on the most effective solutions for your shower water.
Install a Quality Shower Filter
Shower filters are designed to reduce chlorine, chloramines, heavy metals, and other contaminants, significantly improving water quality for your skin and hair.
Shorten Shower Times & Lower Temperature
Reducing exposure time and using cooler water minimizes the inhalation of harmful vapors and reduces the drying effects on your skin and hair.
Hydrate Your Skin Immediately Post-Shower
Apply moisturizers to damp skin within minutes of showering to lock in moisture and counteract the drying effects from water and chemicals.
Improve Bathroom Ventilation
Ensure good airflow during and after showers by using an exhaust fan or opening a window to reduce the concentration of chemical vapors in the air you breathe.
Protect Your Skin & Hair From Houston's Water
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Related Reading
- psoriasis triggered by shower water
- haloacetic acids in shower water
- THMs in your shower water
- shower water quality in Amarillo, Texas
- shower water quality in Arlington, Texas
Is Houston tap water safe to shower in?
While Houston's tap water meets EPA drinking water standards, contaminants like chloramines, disinfection byproducts, and hardness minerals are still present. These can negatively impact sensitive skin, hair, and respiratory health, especially during hot, steamy showers.
Why does my skin feel dry after showering in Houston?
Houston's water contains chloramines, which can strip natural oils from your skin, and is moderately hard, meaning it has dissolved minerals like calcium and magnesium. These factors combine to leave skin feeling dry, tight, and irritated post-shower.
Do shower filters really work for Houston's water?
Yes, a high-quality shower filter can be very effective in Houston. Filters designed to remove chloramines, chlorine, and heavy metals can significantly reduce exposure to these contaminants, leading to noticeable improvements in skin and hair health.
What are disinfection byproducts, and why are they a concern in my shower?
Disinfection byproducts (DBPs) like TTHMs and HAAs form when disinfectants react with organic matter in the water. In the shower, hot water vaporizes these chemicals, leading to inhalation and skin absorption, which can pose long-term health risks.
How does hard water in Houston affect my hair?
Hard water minerals in Houston can build up on your hair strands, making them feel dry, dull, and brittle. This buildup can also prevent shampoos from lathering effectively and can lead to color fading for treated hair.
