Reprinted from: NSF International Consumer Information
Uranium
Contaminant Guide
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URANIUM
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| Maximum Contaminant Level (MCL) | 0.03 mg/L |
| Potential Health Effects (from ingestion of water) |
Kidney effects, cancer |
| Potential Source of Contaminant | Naturally occurring |
| Applicable NSF/ANSI Standard(s) | None |
| Suggested Treatment | Although NSF International does not currently certify any products for reduction of uranium, reverse osmosis, distillation, or anion exchange resins may be helpful. |
| Special Notes | Consumers are encouraged to monitor their water supply when using one of the product technologies listed above in order to ensure the selected product is adequately reducing uranium levels. |
For a list of products certified for reduction of this contaminant, visit the Certified Drinking Water Treatment Products page.
Arsenic
Contaminant Guide
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ARSENIC
|
|
| Maximum Contaminant Level (MCL) | 0.010 mg/L |
| Potential Health Effects (from ingestion of water) |
Skin, nervous system toxicity |
| Potential Source of Contaminant | Natural deposits, smelters, glass, electronics wastes, orchards |
| Applicable NSF/ANSI Standard(s) | Standard 53 Standard 58 Standard 62 |
| Water Treatment Technologies Certified by NSF for Reduction of this Contaminant | Adsorption Reverse Osmosis Distillation |
| Special Notes | Arsenic can be found in water in two different forms:
It is important for consumers to determine which type of arsenic is present in their water prior to selecting a water treatment device. Those individuals with pentavalent arsenic can select either reverse osmosis or distillation. Individuals with trivalent arsenic can select distillation, or consider adding chlorine to their water to convert the trivalent arsenic to pentavalent arsenic. |
For additional information on arsenic, view the arsenic fact sheet.
Nitrate
Contaminant Guide
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NITRATE
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| Maximum Contaminant Level (MCL) | 1 mg/L |
| Potential Health Effects (from ingestion of water) |
Methemoglobulinemia(blue baby syndrome) |
| Potential Source of Contaminant | Animal waste, fertilizer, natural deposits, septic tanks, sewage; rapidly converts to nitrate |
| Applicable NSF/ANSI Standard(s) | Standard 53 Standard 58 Standard 62 |
| Water Treatment Technologies Certified by NSF for Reduction of this Contaminant | Reverse osmosis |
| Special Notes | None |