Is Lancaster, California Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Last updated: April 2026.
Is Lancaster, California Shower Water Safe?
Population: 173,516 · Water Source: State Water Project, Groundwater
For health-conscious residents of Lancaster, California, understanding what's in your shower water is crucial for skin, hair, and respiratory health. While the city's drinking water meets federal standards, contaminants present can still impact your well-being, especially during showering where absorption and inhalation are factors.
💧 Where Does Lancaster's Water Come From?
Primary Source: State Water Project, Groundwater
Lancaster's water supply is a blend from the State Water Project, delivered via the California Aqueduct, and local groundwater wells. This combination ensures a diverse and robust supply, with water treated to meet stringent drinking water standards before distribution.
Treatment: Chloramination, Filtration, Disinfection
🔬 What's In Lancaster's Shower Water?
Here are the key contaminants detected in Lancaster'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 (1059x above) |
| Arsenic | 43.23 ppb | 10.0 ppb | 0.0040 ppb | 🚨 ABOVE EPA LIMIT (10808x above) |
| Chromium (hexavalent) | 13.06 ppb | No federal limit | 0.020 ppb | ⚠️ Exceeds EWG Health Guideline (653x above) |
| Haloacetic acids (HAA5) | 36.20 ppb | 60.0 ppb | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (362x above) |
| Total trihalomethanes (TTHMs) | 43.09 ppb | 80.0 ppb | 0.150 ppb | ⚠️ Exceeds EWG Health Guideline (287x above) |
| Haloacetic acids (HAA9) | 16.42 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (274x above) |
| Dibromoacetic acid | 5.79 ppb | No federal limit | 0.030 ppb | ⚠️ Exceeds EWG Health Guideline (193x above) |
| Bromodichloromethane | 11.13 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (186x above) |
| Dibromochloromethane | 15.61 ppb | No federal limit | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (156x above) |
| Nitrate and nitrite | 8.20 ppm | 10.0 ppm | 0.140 ppm | ⚠️ Exceeds EWG Health Guideline (59x 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: 0.899 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.
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: 0.812 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.
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: 35.45 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.
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: 27.09 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 (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: 15.50 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.
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: 1.94 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: 5.64 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: 6.38 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.
Nitrate and nitrite
The health guideline of 0.14 ppm for nitrate and nitrite was defined by based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. . This health guideline protects against one-in-one-million annual cancer risk level.
Comparison: State average: 0.972 ppm. National average: 0.780 ppm.
Shower Impact: While primarily a drinking water concern, nitrates can contribute to skin irritation during extended shower exposure.
🧴 How Lancaster'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 Lancaster's water quality may be affecting you:
🧖 Skin Effects
- Dryness and irritation from chloramines and hard water minerals
- Eczema flare-ups due to chlorine and mineral residue
- Potential for skin absorption of trace contaminants like chromium-6 and TTHMs
- Soap scum residue contributing to clogged pores
💇 Hair Effects
- Dry, brittle, and dull hair from hard water minerals and chloramines
- Reduced lathering of shampoos and conditioners
- Color fading in treated hair due to chlorine/chloramine exposure
- Mineral buildup leading to scalp irritation and hair breakage
🫁 Respiratory Effects
- Inhalation of chloramine and TTHM vapors during hot showers
- Aggravation of asthma or other respiratory sensitivities
- Potential for long-term respiratory issues from chronic exposure to DBPs in steam
✅ What You Can Do About It
Test Your Water
Knowing your specific water profile helps you choose the most effective solutions for your home.
Install a Quality Shower Filter
Filters specifically designed for showers can significantly reduce chlorine, chloramines, and other common contaminants, improving skin and hair health.
Adjust Shower Habits
Taking shorter, cooler showers reduces exposure time and minimizes the amount of contaminants volatilizing into the air.
Moisturize Regularly
Apply a good quality moisturizer immediately after showering to lock in hydration and combat dryness caused by hard water and disinfectants.
Clean Showerheads
Regularly clean showerheads to remove mineral buildup, ensuring consistent water flow and preventing further contamination.
Protect Your Skin & Hair From Lancaster'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 Anaheim, California
- shower water quality in Bakersfield, California
Is Lancaster tap water safe to shower in?
While Lancaster's tap water meets federal drinking standards, contaminants like chloramines, hardness minerals, and disinfection byproducts can still affect sensitive skin, hair, and respiratory systems during showering. Many residents choose to filter their shower water for added comfort and health benefits.
Why does my skin feel dry after showering in Lancaster?
The high mineral content (hard water) and the presence of chloramines in Lancaster's water can strip natural oils from your skin, leading to dryness, itchiness, and irritation. These substances also make it harder for soaps to lather and rinse clean.
Does Lancaster water damage hair?
Yes, the hardness minerals and chloramines in Lancaster's water can cause hair to become dry, brittle, dull, and prone to breakage. They can also strip hair color and leave a residue that weighs hair down.
Can a shower filter help with Lancaster's hard water?
While some shower filters can help reduce certain minerals that contribute to hardness, most are primarily effective at removing chlorine, chloramines, and other chemical contaminants. For significant hard water issues, a whole-house water softener is generally more effective, but a good shower filter still provides benefits for skin and hair.
What causes the chlorine smell in my Lancaster shower water?
The distinct smell often comes from chloramines, which are used to disinfect Lancaster's water. When heated in a shower, chloramines can off-gas, creating that noticeable odor. Disinfection byproducts (DBPs) formed from chloramines can also contribute to the smell.
