For pitchers and under-sink carbon filters: NSF 53. For reverse osmosis systems: NSF 58. Both certifications independently verify lead reduction. NSF 42 does not cover lead - a filter with only NSF 42 certification has not been tested or verified for lead removal, regardless of what the marketing claims.

Standard Brita filters (Brita Standard, Brita Stream) carry only NSF 42 certification, which covers taste and odor, not lead. They do not remove lead. Brita does make a separate "Longlast+" filter with NSF 53 certification for lead reduction, but this is a different product that must be purchased separately and is not included with most Brita pitchers. Always verify which filter cartridge you have and check its specific NSF certifications.

Lead in water has no taste, color, or smell - you cannot detect it without testing. Risk factors include: home built before 1986, lead service line from street to home (common in older cities), brass faucets or fittings, or copper pipes with lead solder. You can test with an affordable home kit or send a sample to a certified lab for more precise results. The EPA recommends certified lab testing for the most reliable results. Your local water utility must also provide a Consumer Confidence Report annually that includes lead data.

No. Boiling water does not remove lead - in fact, it concentrates lead by evaporating water while leaving lead behind. Boiling is effective for killing bacteria and viruses but makes lead contamination worse. The only way to remove lead from drinking water is through a certified filter (NSF 53 or NSF 58) or distillation.