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 6 contaminant(s) detected in Portsmouth Water Works's water exceed recommended health guidelines, though they may be within legal limits set by the EPA.
Contaminants Detected
Chromium (hexavalent)*
Potential Effect: cancer
This Utility: 0.186 ppb
No Legal Limit
9.3x
EWG's Health Guideline:
0.02 ppb
0.02 ppb
Haloacetic acids (HAA9)*
Potential Effect: cancer
This Utility: 37.5 ppb
No Legal Limit
625x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
This Utility: 0.928 ppt
Legal Limit: 10 ppb
928x
EWG's Health Guideline:
0.001 ppb
0.001 ppb
This Utility: 0.896 ppt
Legal Limit: 4 ppb
3x
EWG's Health Guideline:
0.3 ppb
0.3 ppb
Perfluorooctanoic acid (PFOA)
Potential Effect: cancer
This Utility: 1.93 ppt
Legal Limit: 4 ppb
21x
EWG's Health Guideline:
0.09 ppb
0.09 ppb
Radium, combined (-226 and -228)
Potential Effect: cancer
This Utility: 0.44 ppb
Legal Limit: 5 ppb
8.9x
EWG's Health Guideline:
0.05 ppb
0.05 ppb
This Utility: 1.39 ppt
No Legal Limit
EWG's Health Guideline:
2000 ppt
2000 ppt
This Utility: 0.278 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 0.167 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 1.47 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 1.61 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
Find a Filter
See which water filtration technologies are effective at reducing the contaminants detected in this utility's water supply.
Carbon Filters
Filters 4 contaminants exceeding guidelines (+5 others)
Can reduce the levels of many common contaminants.
Pros
- Lower upfront cost
- Reduced maintenance
Cons
- Does not remove all contaminants
Reverse Osmosis
Filters 6 contaminants exceeding guidelines (+7 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 | |||
| Chromium (hexavalent)* | ✕ | ✓ | ✓ |
| Haloacetic acids (HAA9)* | ✓ | ✓ | ✕ |
| Perfluorohexane sulfonate (PFHXS) | ✓ | ✓ | ✕ |
| Perfluorooctane sulfonate (PFOS) | ✓ | ✓ | ✕ |
| Perfluorooctanoic acid (PFOA) | ✓ | ✓ | ✕ |
| Radium, combined (-226 and -228) | ✕ | ✓ | ✓ |
| Other Contaminants Detected | |||
| Chlorate* | ✕ | ✕ | ✕ |
| Lithium | ✕ | ✓ | ✓ |
| Manganese | ✕ | ✕ | ✓ |
| Perfluorobutane sulfonate (PFBS) | ✓ | ✓ | ✕ |
| Perfluorobutanoic Acid (PFBA) | ✓ | ✓ | ✕ |
| Perfluoroheptanoic acid (PFHPA) | ✓ | ✓ | ✕ |
| Perfluorohexanoic Acid (PFHxA) | ✓ | ✓ | ✕ |
| Perfluoropentanoic Acid (PFPeA) | ✓ | ✓ | ✕ |
| Strontium* | ✕ | ✓ | ✓ |
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.