Is Pasadena, Texas Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Last updated: April 2026.
Is Pasadena, Texas Shower Water Safe?
Population: 151,950 · Water Source: Houston Surface Water System (Lake Houston, Trinity River)
Understanding what's in your shower water is crucial for your health and well-being, especially in Pasadena, Texas. As of 2026, Pasadena's water, sourced from the Houston Surface Water System, contains various elements and treatment byproducts that can impact your skin, hair, and respiratory health. Knowing these details empowers you to make informed decisions about your daily shower routine.
💧 Where Does Pasadena's Water Come From?
Primary Source: Houston Surface Water System (Lake Houston, Trinity River)
Pasadena's drinking water primarily originates from the Houston Surface Water System, drawing from Lake Houston (fed by the San Jacinto River) and supplemented by the Trinity River. This surface water undergoes extensive treatment processes to meet safety standards before being distributed throughout the city.
Treatment: Conventional treatment (coagulation, flocculation, sedimentation, filtration) followed by chloramination for disinfection.
🔬 What's In Pasadena's Shower Water?
Here are the key contaminants detected in Pasadena'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 Pasadena'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 Pasadena's water quality may be affecting you:
🧖 Skin Effects
- Dryness and flakiness due to chloramine and hard water minerals.
- Exacerbation of eczema and other sensitive skin conditions from chemical exposure and mineral residue.
- Itchiness and redness caused by chloramine and disinfection byproducts.
- Soap scum residue that clogs pores and prevents proper skin hydration.
💇 Hair Effects
- Dullness, frizz, and lack of shine due to mineral buildup from hard water.
- Dry, brittle hair that is prone to breakage from chlorine/chloramine exposure.
- Fading of color-treated hair due to oxidizing disinfectants.
- Difficulty lathering shampoo and conditioner effectively, leading to more product use.
🫁 Respiratory Effects
- Inhalation of chloramine vapors, potentially irritating airways for sensitive individuals.
- Exposure to vaporized Total Trihalomethanes (TTHMs) and Haloacetic Acids (HAA5s) in shower steam.
- Mild respiratory discomfort or asthma triggers from chemical off-gassing in poorly ventilated bathrooms.
✅ What You Can Do About It
Test Your Shower Water
Understanding the specific contaminant levels in your home's water can help you choose the most effective solutions. Local water quality reports provide general data, but a home test offers personalized insight.
Install a Quality Shower Filter
A good shower filter can significantly reduce chlorine, chloramines, heavy metals, and some disinfection byproducts. This can lead to noticeable improvements in skin hydration, hair texture, and reduced respiratory irritation.
Improve Bathroom Ventilation
Running an exhaust fan or opening a window during and after showering helps reduce the concentration of chemical vapors in the air. This minimizes inhalation exposure to compounds like chloramine and TTHMs.
Use Moisturizing Skin & Hair Products
Opt for sulfate-free, moisturizing shampoos, conditioners, and body washes to counteract the drying effects of hard water and disinfectants. Apply lotions and creams immediately after showering to lock in moisture.
Limit Shower Duration and Temperature
Shorter, cooler showers can reduce exposure to vaporized chemicals and minimize the stripping of natural oils from your skin and hair. This simple change can help mitigate some of the negative impacts.
Protect Your Skin & Hair From Pasadena'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 San Antonio, Texas
- shower water quality in Amarillo, Texas
Is Pasadena tap water safe to shower in?
Pasadena's tap water meets EPA safety standards for drinking, but 'safe' doesn't mean free from elements that can affect your skin, hair, or respiratory system. Contaminants like chloramine, disinfection byproducts, and hardness minerals, even at legal levels, can cause discomfort and long-term issues for sensitive individuals.
Why does my skin feel dry and itchy after showering in Pasadena?
The primary culprits are likely chloramine, used for disinfection, and the city's naturally hard water. Chloramine can strip natural oils from your skin, while the minerals in hard water react with soap to leave a residue that contributes to dryness and irritation, especially for those with eczema.
Can shower filters really make a difference for Pasadena water?
Yes, a high-quality shower filter specifically designed to remove chloramines, chlorine, and heavy metals can make a significant difference. By reducing these contaminants, you can experience softer skin, shinier hair, and less respiratory irritation from chemical vapors.
Are there specific concerns for children or people with eczema in Pasadena?
Children and individuals with eczema are often more sensitive to the effects of chloramine and hard water minerals. Their skin barriers are more vulnerable, making them prone to increased dryness, irritation, and flare-ups from exposure to these water constituents during showering.
How often should I replace my shower filter?
The replacement frequency for your shower filter depends on the specific filter model, the water quality in your area, and your household's water usage. Generally, most shower filters require replacement every 3 to 6 months to maintain optimal performance and contaminant reduction.
