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 18 contaminant(s) detected in City of Modesto's water exceed recommended health guidelines, though they may be within legal limits set by the EPA.
Contaminants Detected
This Utility: 1.73 ppb
Legal Limit: 10 ppb
434x
EWG's Health Guideline:
0.004 ppb
0.004 ppb
This Utility: 0.268 ppb
Legal Limit: 10 ppb
2.7x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Bromodichloromethane
Potential Effect: cancer
This Utility: 2.33 ppb
No Legal Limit
39x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
Chloroform
Potential Effect: cancer
This Utility: 41 ppb
No Legal Limit
103x
EWG's Health Guideline:
0.4 ppb
0.4 ppb
Chromium (hexavalent)*
Potential Effect: cancer
This Utility: 2.58 ppb
No Legal Limit
129x
EWG's Health Guideline:
0.02 ppb
0.02 ppb
Dibromochloromethane
Potential Effect: cancer
This Utility: 1.05 ppb
No Legal Limit
10x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Haloacetic acids (HAA5)
Potential Effect: cancer
This Utility: 36.2 ppb
Legal Limit: 60 ppb
362x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
Haloacetic acids (HAA9)*
Potential Effect: cancer
This Utility: 20.1 ppb
No Legal Limit
335x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
This Utility: 5.12 ppm
Legal Limit: 10 ppb
37x
EWG's Health Guideline:
0.14 ppb
0.14 ppb
This Utility: 0.493 ppt
Legal Limit: 10 ppb
493x
EWG's Health Guideline:
0.001 ppb
0.001 ppb
This Utility: 0.966 ppt
Legal Limit: 4 ppb
3.2x
EWG's Health Guideline:
0.3 ppb
0.3 ppb
Perfluorooctanoic acid (PFOA)
Potential Effect: cancer
This Utility: 0.397 ppt
Legal Limit: 4 ppb
4.4x
EWG's Health Guideline:
0.09 ppb
0.09 ppb
Tetrachloroethylene (perchloroethylene)
Potential Effect: cancer
This Utility: 0.228 ppb
Legal Limit: 5 ppb
3.8x
EWG's Health Guideline:
0.06 ppb
0.06 ppb
Total trihalomethanes (TTHMs)
Potential Effect: cancer
This Utility: 44.8 ppb
Legal Limit: 80 ppb
299x
EWG's Health Guideline:
0.15 ppb
0.15 ppb
Trichloroacetic acid
Potential Effect: cancer
This Utility: 13.5 ppb
No Legal Limit
135x
EWG's Health Guideline:
0.1 ppb
0.1 ppb
1,2,3-Trichloropropane*
Potential Effect: cancer
This Utility: 0.000935 ppb
No Legal Limit
EWG's Health Guideline:
0.0007 ppb
0.0007 ppb
1,2-Dibromo-3-chloropropane (DBCP)
Potential Effect: cancer
This Utility: 0.00183 ppb
Legal Limit: 0.2 ppb
EWG's Health Guideline:
0.0017 ppb
0.0017 ppb
This Utility: 0.124 ppb
No Legal Limit
This Utility: 0.112 ppb
No Legal Limit
This Utility: 0.157 ppt
No Legal Limit
EWG's Health Guideline:
2000 ppt
2000 ppt
This Utility: 0.052 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 0.02 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 0.193 ppt
No Legal Limit
EWG's Health Guideline:
1000 ppt
1000 ppt
This Utility: 0.321 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 14 contaminants exceeding guidelines (+13 others)
Can reduce the levels of many common contaminants.
Pros
- Lower upfront cost
- Reduced maintenance
Cons
- Does not remove all contaminants
Reverse Osmosis
Filters 17 contaminants exceeding guidelines (+20 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 | ✕ | ✓ | ✓ |
| Bromate* | ✓ | ✓ | ✓ |
| Bromodichloromethane | ✓ | ✓ | ✕ |
| Chloroform | ✓ | ✓ | ✕ |
| Chromium (hexavalent)* | ✕ | ✓ | ✓ |
| Dibromoacetic acid | ✓ | ✓ | ✕ |
| Dibromochloromethane | ✓ | ✓ | ✕ |
| Dichloroacetic acid | ✓ | ✓ | ✕ |
| Haloacetic acids (HAA5) | ✓ | ✓ | ✕ |
| Haloacetic acids (HAA9)* | ✓ | ✓ | ✕ |
| Nitrate | ✕ | ✓ | ✓ |
| Perfluorohexane sulfonate (PFHXS) | ✓ | ✓ | ✕ |
| Perfluorooctane sulfonate (PFOS) | ✓ | ✓ | ✕ |
| Perfluorooctanoic acid (PFOA) | ✓ | ✓ | ✕ |
| Tetrachloroethylene (perchloroethylene) | ✓ | ✓ | ✕ |
| Total trihalomethanes (TTHMs) | ✓ | ✓ | ✕ |
| Trichloroacetic acid | ✓ | ✓ | ✕ |
| Other Contaminants Detected | |||
| 1,1-Dichloroethane | ✓ | ✓ | ✕ |
| 1,2,3-Trichloropropane* | ✓ | ✓ | ✕ |
| 1,2-Dibromo-3-chloropropane (DBCP) | ✓ | ✓ | ✕ |
| 1,4-Dioxane | ✕ | ✓ | ✕ |
| Aluminum | ✕ | ✓ | ✕ |
| Barium | ✕ | ✓ | ✓ |
| Bromide | ✓ | ✓ | ✕ |
| Bromoform | ✓ | ✓ | ✕ |
| Chlorate* | ✕ | ✕ | ✕ |
| Chlorodifluoromethane | ✕ | ✕ | ✕ |
| Dichlorodifluoromethane | ✕ | ✕ | ✕ |
| Fluoride | ✕ | ✓ | ✕ |
| Lithium | ✕ | ✓ | ✓ |
| Manganese | ✕ | ✕ | ✓ |
| Molybdenum | ✕ | ✓ | ✓ |
| Monochloroacetic acid | ✓ | ✓ | ✕ |
| Perfluorobutane sulfonate (PFBS) | ✓ | ✓ | ✕ |
| Perfluorobutanoic Acid (PFBA) | ✓ | ✓ | ✕ |
| Perfluoroheptanoic acid (PFHPA) | ✓ | ✓ | ✕ |
| Perfluorohexanoic Acid (PFHxA) | ✓ | ✓ | ✕ |
| Perfluoropentanoic Acid (PFPeA) | ✓ | ✓ | ✕ |
| Strontium* | ✕ | ✓ | ✓ |
| Trichloroethylene | ✓ | ✓ | ✕ |
| Vanadium* | ✕ | ✕ | ✓ |
| Xylenes (total) | ✓ | ✓ | ✕ |
Protect your family's health.
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