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Nitrates & Nitrites in Drinking Water

Agricultural runoff contaminants that pose a severe risk to infants (blue baby syndrome) and pregnant women.

Key Facts

EPA Limit
10 mg/L (nitrate as N), 1 mg/L (nitrite as N) mg/L
Health Effects
Blue baby syndrome (methemoglobinemia), Increased cancer risk, Thyroid disease
Common Sources
Agricultural fertilizer runoff, Animal feedlot operations, Septic system leachate

Top Recommended Filters for Nitrates & Nitrites

Top Pick
Waterdrop G3P800 Reverse Osmosis System

Waterdrop

Waterdrop G3P800 Reverse Osmosis System

Tankless 800-GPD reverse osmosis system with UV sterilization, smart TDS faucet, and industry-leading 3:1 drain ratio.

Best for: Families wanting the purest drinking water with fast flow and UV sterilization

  • 800 GPD output โ€” fills a glass in 6 seconds
  • 3:1 pure-to-drain ratio saves water
  • UV sterilization stage built in
APEC ROES-50 Reverse Osmosis System

APEC

APEC ROES-50 Reverse Osmosis System

Best-selling 5-stage RO system made in the USA with WQA Gold Seal certification at an unbeatable price point.

Best for: Budget-conscious homeowners wanting reliable RO filtration with low annual cost

  • Excellent value โ€” best RO under $200
  • Long-lasting filters (6โ€“12 months pre/post, 2โ€“3 years RO membrane)
  • WQA Gold Seal certified
iSpring RCC7AK 6-Stage Reverse Osmosis System

iSpring

iSpring RCC7AK 6-Stage Reverse Osmosis System

6-stage RO system with alkaline remineralization that restores beneficial minerals for better-tasting, healthier water.

Best for: Health-conscious families wanting mineralized alkaline RO water at an affordable price

  • Alkaline remineralization stage restores healthy minerals
  • 75 GPD output โ€” 50% faster than budget alternatives
  • Over 90,000 installations worldwide