Last updated: April 2026.
🚿 North Dakota Shower Water Quality Report (2026)
Comprehensive analysis of North Dakota water quality across 1 city • Based on real EWG testing data • Updated 2026
If you live in North Dakota, you may be showering in water that contains contaminants exceeding health guidelines — and you might not even know it. Our analysis of water quality data across 1 North Dakota city reveals 8 contaminants that may exceed EWG health guidelines.
North Dakota faces unique water quality challenges including oil field contamination and naturally occurring radium. Whether you're in Bismarck or elsewhere in the state, understanding what's in your shower water is the first step toward protecting your skin and hair.
📊 North Dakota Water Quality at a Glance
Across North Dakota, we analyzed water quality data from the Environmental Working Group (EWG) database. The results show that North Dakota residents may be exposed to a range of contaminants through their shower water — many at levels that exceed health guidelines set by the EWG, which are often stricter than federal legal limits.
⚠️ Top Contaminants Found in North Dakota Water
Based on EWG data analysis, here are the most significant contaminants detected in North Dakota water supplies:
| Contaminant | Avg. Level | EWG Guideline | Status |
|---|---|---|---|
| Haloacetic acids (HAA9) | 13.82 ppb | 0.0600 ppb | ⚠️ 230.3x above |
| Total trihalomethanes (TTHMs) | 34.22 ppb | 0.1500 ppb | ⚠️ 228.2x above |
| Bromodichloromethane | 10.12 ppb | 0.0600 ppb | ⚠️ 168.7x above |
| Haloacetic acids (HAA5) | 10.13 ppb | 0.1000 ppb | ⚠️ 101.3x above |
| Dibromochloromethane | 6.76 ppb | 0.1000 ppb | ⚠️ 67.6x above |
| Dibromoacetic acid | 1.28 ppb | 0.0300 ppb | ⚠️ 42.6x above |
| Chloroform | 16.39 ppb | 0.4000 ppb | ⚠️ 41.0x above |
| Dichloroacetic acid | 6.76 ppb | 0.2000 ppb | ⚠️ 33.8x above |
Haloacetic acids (HAA9)
The health guideline of 0.06 ppb for haloacetic acids (HAA9) was defined by EWG . This health guideline protects against cancer.
National Average: 23.70 ppb | North Dakota Average: 13.82 ppb
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.
National Average: 29.06 ppb | North Dakota Average: 34.22 ppb
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.
National Average: 5.89 ppb | North Dakota Average: 10.12 ppb
Haloacetic acids (HAA5)
The health guideline of 0.1 ppb for haloacetic acids (HAA5) was established. This health guideline protects against cancer.
National Average: 19.82 ppb | North Dakota Average: 10.13 ppb
🏙️ City-by-City Water Quality in North Dakota
We've analyzed water quality in 1 North Dakota city. Click on any city to see its detailed water quality report:
| City | Contaminants Found | Above EWG Guidelines |
|---|---|---|
| Bismarck | 20 | 12 |
🩺 Health Effects of North Dakota Water Contaminants
The contaminants found in North Dakota water may be associated with various health concerns. When you shower, your skin — your body's largest organ — can absorb these substances, and you may inhale steam containing volatile compounds.
🧴 Skin & Hair
🫁 Respiratory
- Steam inhalation of chlorine/VOCs
- May aggravate asthma symptoms
- Potential respiratory irritation
⚕️ Long-Term Concerns
- Disinfection byproduct exposure
- Eczema flare-ups
- Cumulative contaminant absorption
🛡️ How to Protect Yourself from North Dakota Water Contaminants
The good news: you don't have to accept whatever comes out of your North Dakota showerhead. A quality shower filter can significantly reduce many of the contaminants found in your water.
Key contaminants a shower filter can help address:
- Haloacetic acids (HAA9) — learn about health effects and removal
- Total trihalomethanes (TTHMs) — learn about health effects and removal
- Chlorine — learn about health effects and removal
- Lead — learn about health effects and removal
Additionally, understanding common symptoms can help you identify water quality issues:
💧 Recommended Shower Filtration for North Dakota
Based on North Dakota's water quality profile, we recommend a multi-stage filtration system. Afina's shower filters use KDF-55 and activated carbon to target chlorine, heavy metals, and other common contaminants found in North Dakota water.
Afina Filtered Showerhead
Multi-stage filter built right into a high-pressure showerhead. No adapters needed.
Shop Now →Afina Shower Filter
Attach between your pipe and any showerhead. KDF-55 + activated carbon filtration.
Shop Now →Replacement Filter
Keep your filtration fresh. Replace every 2-3 months for optimal contaminant removal.
Shop Now →❓ Frequently Asked Questions
Is North Dakota tap water safe to shower in?
While North Dakota tap water meets federal legal standards (MCLs), our analysis found 8 contaminants exceeding stricter EWG health guidelines. Federal limits don't always reflect the latest health research, so many health-conscious residents choose to add shower filtration for an extra layer of protection.
What contaminants are in North Dakota water?
Based on EWG data, North Dakota water contains up to 20 detected contaminants. The most notable include Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Bromodichloromethane. North Dakota faces specific challenges with oil field contamination and naturally occurring radium.
Does North Dakota have hard water?
Yes, North Dakota generally has very hard water. High mineral content including calcium and magnesium can cause buildup on fixtures, dry skin, and hair damage.
Do I need a shower filter in North Dakota?
Given that North Dakota water contains contaminants above EWG health guidelines, a shower filter may help reduce your exposure to chlorine, heavy metals, and disinfection byproducts. This is especially important if you experience dry skin, itchy scalp, or hair issues after showering.
How does North Dakota water compare to the national average?
North Dakota is in the Great Plains region and faces water quality challenges common to the area, including oil field contamination and naturally occurring radium. Some contaminants may be above national averages depending on your specific city and water source.
Data sourced from the Environmental Working Group (EWG) Tap Water Database. This report is for informational purposes only and does not constitute medical advice. Water quality can vary by neighborhood and season. Last updated: March 2026.
