Chemical Contaminants | ProblemWater.com

Chemical Contaminants

Reprinted from: NSF International Consumer Information

Uranium

Contaminant Guide

URANIUM
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

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:

  1. Pentavalent Arsenic (also known as Arsenic 5, Arsenic V, or Arsenate)
  2. Trivalent Arsenic (also known as Arsenic 3, Arsenic III, or Arsenite)

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

NITRATE
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