Overview
Legal does not necessarily equal safe.
- Getting a passing grade from the federal government does not mean the water meets the latest health guidelines.
- Legal limits for contaminants in tap water have not been updated in almost 20 years.
- The best way to ensure clean tap water is to keep pollution out of source water in the first place.
AquaPura's analysis shows 12 contaminant(s) detected in Bethesda WSC's water exceed recommended health guidelines, though they may be within legal limits set by the EPA.
Contaminants Detected
This Utility: 0.338 ppb
Legal Limit: 10 ppb
84x
EWG's Health Guideline:
0.004 ppb
0.004 ppb
Bromodichloromethane
Potential Effect: cancer
This Utility: 3.89 ppb
No Legal Limit
65x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
Chloroform
Potential Effect: cancer
This Utility: 3.64 ppb
No Legal Limit
9.1x
EWG's Health Guideline:
0.4 ppb
0.4 ppb
Dibromochloromethane
Potential Effect: cancer
This Utility: 2.48 ppb
No Legal Limit
25x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Haloacetic acids (HAA5)
Potential Effect: cancer
This Utility: 9.12 ppb
Legal Limit: 60 ppb
91x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Haloacetic acids (HAA9)*
Potential Effect: cancer
This Utility: 15.2 ppb
No Legal Limit
253x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
This Utility: 0.344 ppm
Legal Limit: 10 ppb
2.5x
EWG's Health Guideline:
0.14 ppb
0.14 ppb
This Utility: 0.468 ppm
Legal Limit: 10 ppb
3.3x
EWG's Health Guideline:
0.14 ppb
0.14 ppb
Total trihalomethanes (TTHMs)
Potential Effect: cancer
This Utility: 13.9 ppb
Legal Limit: 80 ppb
93x
EWG's Health Guideline:
0.15 ppb
0.15 ppb
Chromium (hexavalent)*
Potential Effect: cancer
This Utility: 0.0286 ppb
No Legal Limit
EWG's Health Guideline:
0.02 ppb
0.02 ppb
This Utility: 0.989 ppb
Legal Limit: 100 ppb
This Utility: 0.0278 ppb
Legal Limit: 400 ppb
EWG's Health Guideline:
200 ppb
200 ppb
Trichloroacetic acid
Potential Effect: cancer
This Utility: 0.119 ppb
No Legal Limit
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Find a Filter
See which water filtration technologies are effective at reducing the contaminants detected in this utility's water supply.
Carbon Filters
Filters 9 contaminants exceeding guidelines (+7 others)
Can reduce the levels of many common contaminants.
Pros
- Lower upfront cost
- Reduced maintenance
Cons
- Does not remove all contaminants
Reverse Osmosis
Filters 12 contaminants exceeding guidelines (+17 others)
Can reduce the levels of many common contaminants.
Pros
- Most effective
Cons
- Higher upfront cost
- Requires more maintenance
- Wastes water
Other Considerations
Ion Exchange
PROS: Softens hard water, Reduces some contaminants
CONS: Doesn't remove all contaminants
Whole-House Filters
PROS: Useful for reducing radiologicals and TCE
CONS: Expensive to install and maintain, Risk of bacterial contamination
Explore filter options for each contaminant. See which technologies are effective at reducing specific contaminants.
| Contaminant | Activated Carbon | Reverse Osmosis | Ion Exchange |
|---|---|---|---|
| Contaminants Above Health Guidelines | |||
| Arsenic | ✕ | ✓ | ✓ |
| Bromochloroacetic acid | ✓ | ✓ | ✕ |
| Bromodichloromethane | ✓ | ✓ | ✕ |
| Chloroform | ✓ | ✓ | ✕ |
| Dibromoacetic acid | ✓ | ✓ | ✕ |
| Dibromochloromethane | ✓ | ✓ | ✕ |
| Dichloroacetic acid | ✓ | ✓ | ✕ |
| Haloacetic acids (HAA5) | ✓ | ✓ | ✕ |
| Haloacetic acids (HAA9)* | ✓ | ✓ | ✕ |
| Nitrate | ✕ | ✓ | ✓ |
| Nitrate and nitrite | ✕ | ✓ | ✓ |
| Total trihalomethanes (TTHMs) | ✓ | ✓ | ✕ |
| Other Contaminants Detected | |||
| Aluminum | ✕ | ✓ | ✕ |
| Atrazine* | ✓ | ✓ | ✕ |
| Barium | ✕ | ✓ | ✓ |
| Bromochloromethane | ✓ | ✓ | ✕ |
| Bromoform | ✓ | ✓ | ✕ |
| Chlorate* | ✕ | ✕ | ✕ |
| Chromium (hexavalent)* | ✕ | ✓ | ✓ |
| Chromium (total) | ✕ | ✓ | ✓ |
| Cyanide | ✕ | ✓ | ✓ |
| Di(2-ethylhexyl) adipate | ✓ | ✓ | ✕ |
| Fluoride | ✕ | ✓ | ✕ |
| Germanium | ✕ | ✓ | ✕ |
| Manganese | ✕ | ✕ | ✓ |
| Molybdenum | ✕ | ✓ | ✓ |
| Monobromoacetic acid* | ✓ | ✓ | ✕ |
| Monochloroacetic acid | ✓ | ✓ | ✕ |
| Nitrite | ✕ | ✓ | ✓ |
| Strontium* | ✕ | ✓ | ✓ |
| Trichloroacetic acid | ✓ | ✓ | ✕ |
| Vanadium* | ✕ | ✕ | ✓ |
Protect your family's health.
Don't wait for your utility to improve. Get a free water analysis from AquaPura and find the right filtration system for your home.