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 9 contaminant(s) detected in Williston Park's water exceed recommended health guidelines, though they may be within legal limits set by the EPA.
Contaminants Detected
This Utility: 4 ppm
Legal Limit: 10 ppb
29x
EWG's Health Guideline:
0.14 ppb
0.14 ppb
This Utility: 4.01 ppm
Legal Limit: 10 ppb
29x
EWG's Health Guideline:
0.14 ppb
0.14 ppb
This Utility: 0.06 ppt
No Legal Limit
10x
EWG's Health Guideline:
0.006 ppb
0.006 ppb
This Utility: 0.094 ppt
No Legal Limit
94x
EWG's Health Guideline:
0.001 ppb
0.001 ppb
This Utility: 1 ppt
Legal Limit: 10 ppb
1,004x
EWG's Health Guideline:
0.001 ppb
0.001 ppb
This Utility: 1.62 ppt
Legal Limit: 10 ppb
270x
EWG's Health Guideline:
0.006 ppb
0.006 ppb
This Utility: 1.2 ppt
Legal Limit: 4 ppb
4x
EWG's Health Guideline:
0.3 ppb
0.3 ppb
Perfluorooctanoic acid (PFOA)
Potential Effect: cancer
This Utility: 2.94 ppt
Legal Limit: 4 ppb
33x
EWG's Health Guideline:
0.09 ppb
0.09 ppb
Radium, combined (-226 and -228)
Potential Effect: cancer
This Utility: 0.71 ppb
Legal Limit: 5 ppb
14x
EWG's Health Guideline:
0.05 ppb
0.05 ppb
This Utility: 1 ppt
No Legal Limit
EWG's Health Guideline:
1 ppt
1 ppt
This Utility: 0.137 ppb
No Legal Limit
Chloroform
Potential Effect: cancer
This Utility: 0.106 ppb
No Legal Limit
EWG's Health Guideline:
0.4 ppb
0.4 ppb
This Utility: 0.134 ppt
No Legal Limit
EWG's Health Guideline:
2000 ppt
2000 ppt
This Utility: 0.992 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 0.719 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 1.2 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 1.28 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
Tetrachloroethylene (perchloroethylene)
Potential Effect: cancer
This Utility: 0.0103 ppb
Legal Limit: 5 ppb
EWG's Health Guideline:
0.06 ppb
0.06 ppb
Total trihalomethanes (TTHMs)
Potential Effect: cancer
This Utility: 0.108 ppb
Legal Limit: 80 ppb
EWG's Health Guideline:
0.15 ppb
0.15 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 6 contaminants exceeding guidelines (+11 others)
Can reduce the levels of many common contaminants.
Pros
- Lower upfront cost
- Reduced maintenance
Cons
- Does not remove all contaminants
Reverse Osmosis
Filters 9 contaminants exceeding guidelines (+13 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 | |||
| Nitrate | ✕ | ✓ | ✓ |
| Nitrate and nitrite | ✕ | ✓ | ✓ |
| Perfluorodecanoic acid (PFDA) | ✓ | ✓ | ✕ |
| Perfluoroheptane sulfonic acid (PFHpS) | ✓ | ✓ | ✕ |
| Perfluorohexane sulfonate (PFHXS) | ✓ | ✓ | ✕ |
| Perfluorononanoic acid (PFNA) | ✓ | ✓ | ✕ |
| Perfluorooctane sulfonate (PFOS) | ✓ | ✓ | ✕ |
| Perfluorooctanoic acid (PFOA) | ✓ | ✓ | ✕ |
| Radium, combined (-226 and -228) | ✕ | ✓ | ✓ |
| Other Contaminants Detected | |||
| 1,4-Dioxane | ✕ | ✓ | ✕ |
| 6:2 Fluorotelomer sulfonate (6 2FTS) * | ✓ | ✓ | ✕ |
| Barium | ✕ | ✓ | ✓ |
| Chlorodifluoromethane | ✕ | ✕ | ✕ |
| Chloroform | ✓ | ✓ | ✕ |
| Chloromethane | ✓ | ✓ | ✕ |
| Perfluorobutane sulfonate (PFBS) | ✓ | ✓ | ✕ |
| Perfluorobutanoic Acid (PFBA) | ✓ | ✓ | ✕ |
| Perfluoroheptanoic acid (PFHPA) | ✓ | ✓ | ✕ |
| Perfluorohexanoic Acid (PFHxA) | ✓ | ✓ | ✕ |
| Perfluoropentanoic Acid (PFPeA) | ✓ | ✓ | ✕ |
| Tetrachloroethylene (perchloroethylene) | ✓ | ✓ | ✕ |
| Total trihalomethanes (TTHMs) | ✓ | ✓ | ✕ |
| Trichloroethylene | ✓ | ✓ | ✕ |
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.