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The Bottom Line
Look for NSF/ANSI 53 certification specifically for lead reduction — not all filters that reduce chlorine also reduce lead. Reverse osmosis and specifically-certified under-sink or pitcher filters are the most reliable options.
Lead in drinking water most commonly comes from old plumbing — lead pipes, lead solder, or brass fixtures containing lead — rather than the water source itself, which is why lead levels can vary significantly even within the same city block depending on a home’s plumbing age.
Test Before You Filter
Because lead exposure is plumbing-dependent, testing your specific water is more useful here than for almost any other contaminant. Many local health departments offer low-cost or free lead testing, and home test kits are widely available. If you have older plumbing (pre-1986 in the US, when lead solder was more common) or live in an older building, testing is worth prioritizing.
What Actually Removes Lead
- NSF/ANSI 53 certified filters: this is the specific standard covering lead reduction. Check for this exact certification on any pitcher, under-sink, or countertop filter — see our pitcher comparison and under-sink guide for certified options.
- Reverse osmosis: effectively removes lead along with a wide range of other contaminants. See our reverse osmosis guide.
Standard carbon filtration without the NSF/ANSI 53 certification is not reliably effective against lead — don’t assume a basic filter handles this without checking.
Other Steps Worth Knowing
Running the tap for a minute before use (especially first thing in the morning, after water has sat in pipes overnight) is a commonly cited practice for reducing lead exposure from plumbing, independent of whatever filter you use. It doesn’t replace filtration or fixing the plumbing source, but it’s a free, immediate step.