Is Garden Grove, California Shower Water Safe? What's In Your Water (2026)
Khat Cruz
Last updated: April 2026.
Is Garden Grove, California Shower Water Safe?
Population: 172,613 · Water Source: Orange County Groundwater Basin, Metropolitan Water District (MWD) of Southern California
Understanding what's in your shower water is crucial for health-conscious residents of Garden Grove, California. While the city's tap water meets federal safety standards for drinking, certain contaminants and water characteristics can significantly impact your skin, hair, and respiratory health during showering. Discover the specifics of Garden Grove's water quality to make informed choices for your well-being.
💧 Where Does Garden Grove's Water Come From?
Primary Source: Orange County Groundwater Basin, Metropolitan Water District (MWD) of Southern California
Garden Grove's water supply is a blend of local groundwater, pumped from the Orange County Groundwater Basin, and imported surface water purchased from the Metropolitan Water District (MWD) of Southern California. MWD sources water from the State Water Project in Northern California and the Colorado River Aqueduct, which is then treated and delivered to local agencies. This blend ensures a reliable supply but also means the water carries characteristics from both sources.
Treatment: MWD employs advanced conventional filtration, disinfection with chloramines, and sometimes ozone. Local agencies, including Garden Grove, further disinfect the water primarily using chloramines to maintain water quality throughout the distribution system.
🔬 What's In Garden Grove's Shower Water?
Here are the key contaminants detected in Garden Grove'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 (8799x above) |
| Perfluorooctane sulfonate (PFOS) | 0.0000 ppt | 4e-06 ppt | 0.0000 ppt | 🚨 ABOVE EPA LIMIT (75x above) |
| Perfluorooctanoic acid (PFOA) | 0.0000 ppt | 4e-06 ppt | 0.0000 ppt | 🚨 ABOVE EPA LIMIT (98x above) |
| Arsenic | 1.57 ppb | 10.0 ppb | 0.0040 ppb | ⚠️ Exceeds EWG Health Guideline (392x above) |
| Haloacetic acids (HAA5) | 36.20 ppb | 60.0 ppb | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (362x above) |
| Haloacetic acids (HAA9) | 13.30 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (222x above) |
| Total trihalomethanes (TTHMs) | 29.99 ppb | 80.0 ppb | 0.150 ppb | ⚠️ Exceeds EWG Health Guideline (200x above) |
| Bromodichloromethane | 8.40 ppb | No federal limit | 0.060 ppb | ⚠️ Exceeds EWG Health Guideline (140x above) |
| Perfluorononanoic acid (PFNA) | 0.0000 ppt | 1e-05 ppt | 0.0000 ppt | ⚠️ Exceeds EWG Health Guideline (97x above) |
| Dibromochloromethane | 7.40 ppb | No federal limit | 0.100 ppb | ⚠️ Exceeds EWG Health Guideline (74x 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.
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.
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.
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.
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.
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.
Perfluorononanoic acid (PFNA)
The health guideline of 0.006 ppt for perfluorononanoic acid 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 immune system and harm to fetal growth and child development.
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.
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.
🧴 How Garden Grove'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 Garden Grove's water quality may be affecting you:
🧖 Skin Effects
- Dry, itchy, and irritated skin due to chloramine and hard water residue.
- Exacerbation of eczema and other sensitive skin conditions.
- Soap scum buildup on skin, leading to clogged pores and dullness.
- Potential allergic dermatitis from contaminants like hexavalent chromium in sensitive individuals.
💇 Hair Effects
- Dull, brittle, and frizzy hair from mineral buildup and chloramine stripping natural oils.
- Difficulty lathering shampoo and rinsing thoroughly, leaving residue.
- Color-treated hair fading faster due to chlorine exposure.
- Increased hair breakage and scalp dryness.
🫁 Respiratory Effects
- Irritation of nasal passages, throat, and lungs from inhaled chloramine vapor.
- Exposure to volatile disinfection byproducts (TTHMs, HAA5) through steam inhalation.
- Potential for respiratory discomfort or exacerbation of asthma in sensitive individuals.
- Dryness of mucous membranes from prolonged exposure to hot, chlorinated steam.
✅ What You Can Do About It
Test Your Water
Consider a home water testing kit to get a precise understanding of the contaminants and hardness levels specific to your Garden Grove residence. This personalized data can guide your solutions.
Install a Quality Shower Filter
A high-quality shower filter can significantly reduce chloramine, disinfection byproducts, and some heavy metals, improving your shower experience and protecting your skin and hair.
Improve Bathroom Ventilation
Ensure good ventilation by using an exhaust fan or opening a window during and after showering to minimize inhalation of volatile contaminants and steam.
Use Cooler Water for Shorter Showers
Reducing shower temperature and duration can decrease the amount of chloramine and other volatile chemicals released into the air and absorbed by your skin.
Moisturize Immediately After Showering
Applying a rich moisturizer to damp skin within minutes of showering helps to lock in moisture and counteract the drying effects of hard water and chloramine.
Protect Your Skin & Hair From Garden Grove's Water
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Related Reading
- psoriasis triggered by shower water
- trihalomethanes in treated water
- hexavalent chromium in water
- shower water quality in Anaheim, California
- shower water quality in Bakersfield, California
Is Garden Grove tap water safe to shower in?
Yes, Garden Grove tap water meets all federal and state drinking water standards, making it generally safe for showering. However, while legally safe, the presence of chloramine, disinfection byproducts, and high mineral hardness can still negatively impact sensitive skin, hair, and respiratory health for some individuals.
Why does my skin feel dry and itchy after showering in Garden Grove?
The primary culprits are likely chloramine, which strips natural oils from your skin, and the high mineral content (hard water) in Garden Grove's supply. Hard water leaves behind a residue that can clog pores and make your skin feel tight, dry, and contribute to itching, especially for those with eczema.
Will a shower filter help with the chlorine smell and dry hair?
Absolutely. A good shower filter is designed to reduce chloramine, which is responsible for the 'chlorine' smell and can damage hair. By filtering these chemicals, you can experience softer skin, less brittle hair, and a significant reduction in irritating odors.
What is 'hard water' and how does it affect me in Garden Grove?
Hard water refers to water with a high concentration of dissolved minerals, primarily calcium and magnesium, which is very common in Garden Grove. While not a health risk, it prevents soap from lathering effectively, leaves mineral deposits on surfaces, and can make your skin and hair feel dry, dull, and difficult to manage.
Are there specific concerns for children or people with eczema in Garden Grove?
Yes, children and individuals with eczema or sensitive skin are often more susceptible to the drying and irritating effects of chloramine and hard water. These contaminants can exacerbate skin conditions, leading to increased dryness, redness, and itching, making protective measures like filtered showers particularly beneficial.
