Is Santa Ana, California Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Last updated: April 2026.
Is Santa Ana, California Shower Water Safe?
Population: 309,441 · Water Source: Metropolitan Water District of Southern California (MWD) and Orange County Groundwater Basin
Santa Ana, California's tap water is treated to meet federal and state drinking water standards, yet what flows into your shower might contain more than you realize. Understanding the specific contaminants in Santa Ana's water is crucial for health-conscious residents, especially those concerned about skin, hair, and respiratory issues.
💧 Where Does Santa Ana's Water Come From?
Primary Source: Metropolitan Water District of Southern California (MWD) and Orange County Groundwater Basin
Santa Ana's water supply is a blend, primarily sourced from the Orange County Groundwater Basin, managed by the Orange County Water District (OCWD), and supplemented by imported water from the Metropolitan Water District (MWD) via the Colorado River and State Water Project. OCWD actively recharges the groundwater basin with highly purified recycled water from its Groundwater Replenishment System (GWRS), a state-of-the-art purification facility.
Treatment: Primarily chloramination for disinfection, along with filtration, coagulation, and flocculation for surface water sources, and advanced purification for recycled water.
🔬 What's In Santa Ana's Shower Water?
Here are the key contaminants detected in Santa Ana'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 (4870x above) |
| Perfluorooctane sulfonate (PFOS) | 0.0000 ppt | 4e-06 ppt | 0.0000 ppt | 🚨 ABOVE EPA LIMIT (19x above) |
| Perfluorooctanoic acid (PFOA) | 0.0000 ppt | 4e-06 ppt | 0.0000 ppt | 🚨 ABOVE EPA LIMIT (60x above) |
| Haloacetic acids (HAA5) | 36.20 ppb | 60.0 ppb | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (362x above) |
| Total trihalomethanes (TTHMs) | 23.28 ppb | 80.0 ppb | 0.150 ppb | ⚠️ Exceeds EWG Health Guideline (155x above) |
| Arsenic | 0.507 ppb | 10.0 ppb | 0.0040 ppb | ⚠️ Exceeds EWG Health Guideline (127x above) |
| Bromodichloromethane | 6.39 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (106x above) |
| Haloacetic acids (HAA9) | 4.99 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (83x above) |
| Dibromochloromethane | 7.38 ppb | No federal limit | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (74x above) |
| Dibromoacetic acid | 1.83 ppb | No federal limit | 0.030 ppb | ⚠️ Exceeds EWG Health Guideline (61x 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.
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.
Perfluorooctanoic acid (PFOA)
The health guideline of 0.09 ppt for PFOA was defined by 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 Harm to the immune system; harm to fetal growth and child development; increased cholesterol.
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 (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.
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.
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.
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.
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.
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.
🧴 How Santa Ana'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 Santa Ana's water quality may be affecting you:
🧖 Skin Effects
- Dryness and irritation from chlorine and chloramines stripping natural oils.
- Eczema flare-ups due to chemical irritants and mineral residue.
- Soap scum residue left by hard water, leading to dullness and potential clogged pores.
- Premature aging effects from long-term exposure to chlorinated water.
💇 Hair Effects
- Brittleness and dullness due to mineral buildup and chemical exposure.
- Difficulty lathering shampoo and conditioner, leading to increased product use.
- Color fading in treated hair from chlorine and mineral interactions.
- Residue and film on hair, making it feel heavy or greasy despite washing.
🫁 Respiratory Effects
- Asthma and allergy triggers from inhaled chloramine and DBP vapors.
- Irritation of nasal passages and lungs from volatile chemicals in steam.
- Coughing or shortness of breath for sensitive individuals during hot showers.
- General respiratory discomfort from extended exposure to chemical-laden steam.
✅ What You Can Do About It
Test Your Water
Get a home water test kit to understand the specific contaminants and hardness levels in your Santa Ana residence.
Install a Shower Filter
A quality shower filter can significantly reduce chlorine, chloramines, and other contaminants, improving skin and hair health.
Shorten Shower Times
Limiting exposure time to hot, steamy water can reduce the inhalation and absorption of volatile contaminants.
Use Lukewarm Water
Showering with cooler water can decrease the vaporization of chemicals and minimize skin dryness.
Moisturize Immediately
Apply a rich moisturizer to damp skin right after showering to lock in hydration and counteract drying effects.
Protect Your Skin & Hair From Santa Ana's Water
The easiest way to remove chlorine, heavy metals, and other contaminants from your shower water.
Shop Afina Filtered Showerheads →🛒 Recommended Products for Santa Ana Residents
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15-stage filtered showerhead that removes chlorine, heavy metals, and other contaminants while providing great water pressure.
✨ All-in-one solution — filters water and gives you a premium shower experience
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Replacement filter cartridge for Afina shower filters. Lasts up to 6 months or 10,000 gallons.
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Related Reading
- why your skin feels dry after showering
- arsenic in drinking water
- hexavalent chromium in water
- shower water quality in Anaheim, California
- shower water quality in Bakersfield, California
Is Santa Ana tap water safe to shower in?
Yes, Santa Ana's tap water meets regulatory safety standards for drinking, making it generally safe for showering. However, contaminants like chloramines, hardness minerals, and disinfection byproducts can still impact skin, hair, and respiratory health, especially for sensitive individuals.
Why does my shower water smell like chlorine in Santa Ana?
Santa Ana's water is disinfected with chloramines to ensure it's free from harmful bacteria. While effective, chloramines can create a noticeable chemical odor, particularly in hot shower steam, which can be irritating to some.
How does Santa Ana's hard water affect my skin and hair?
Santa Ana's water is moderately hard, meaning it contains elevated levels of minerals like calcium and magnesium. These minerals prevent soap from lathering properly and leave a residue on skin and hair, leading to dryness, dullness, and potential irritation.
Can a shower filter help with my eczema in Santa Ana?
Many people with eczema find relief by using a shower filter that reduces chlorine and chloramines, as these disinfectants can strip natural oils and irritate sensitive skin. Removing these irritants can help mitigate flare-ups and improve skin comfort.
Are there specific contaminants in Santa Ana water that affect respiratory health?
Yes, volatile compounds like chloramines and disinfection byproducts (e.g., TTHMs, HAAs) can vaporize in hot shower water. Inhaling these chemicals can irritate respiratory passages and potentially exacerbate conditions like asthma or allergies in susceptible individuals.
