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Nitrate

Inorganic
MCL10.0 mg/L
MCLG10.0 mg/L

Legal limit and health goal

MCL — Maximum Contaminant Level

The enforceable legal limit. Public water systems must keep levels at or below this number. Violation triggers a public notice requirement.

10.0 mg/L
MCLG — Maximum Contaminant Level Goal

The non-enforceable health goal set by the EPA. For known or probable carcinogens the MCLG is zero — no level of exposure is considered without risk.

10.0 mg/L

Representative sample reading

Actual reading — Clear Springs Water District, TX (May 2026)

Health effects

Causes methemoglobinemia ("blue-baby syndrome") in infants under 6 months. Carbon filters do NOT remove nitrate — reverse osmosis (NSF 58) only.

Filters verified to reduce Nitrate

3 certified

Frizzlife

M800 Under-Sink Reverse Osmosis

Under-sink RO$399
NSF/58
Verified PartnerView product

AquaTru

Classic Countertop RO

Countertop RO$449
NSF/42NSF/53NSF/58NSF/401
Verified PartnerView product

Waterdrop

G3P800 Under-Sink RO

Under-sink RO$549
NSF/53NSF/58NSF/401
Verified PartnerView product

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Utilities currently reporting exceedances

No utilities in our current coverage are reporting an exceedance for this contaminant.