Lead almost never arrives in your water from the treatment plant. It is picked up on the way in, from a lead service line, from lead solder in older joints, or from brass fixtures and valves that contain some lead. That single fact shapes every part of the answer: the contamination happens inside your own plumbing, so the fix has to sit downstream of it, at the tap you drink from.
Why a whole-house filter may not be the answer
Homeowners often assume treatment at the main line covers everything, but if lead is dissolving out of the service line, the solder or the faucet itself, then a filter at the point of entry sits upstream of the source and cannot help. That is why lead is normally treated at the point of use, with a filter on or under the kitchen sink where drinking and cooking water is drawn. A point of entry system still has a role where lead enters with the supply before the house, but establishing which situation you are in comes first, and that means finding out what your service line and your interior plumbing are made of.
Habits that reduce exposure straight away
Lead levels rise while water sits still in contact with the plumbing, so the longer the stagnation the higher the result. Run the cold tap before drawing water for drinking or cooking, particularly first thing in the morning or after a day away, and run it longer if the house has been empty. Use cold water only for drinking, cooking and especially for making infant formula, because hot water dissolves lead more readily and the heater is not a filter. Clean the faucet aerator screens regularly, since particles of lead-bearing scale collect there. None of this replaces a filter, but all of it works today and costs nothing.
Filters that genuinely remove lead
Two technologies do the job at a tap: a carbon block specifically certified for lead reduction, and a reverse osmosis system. Ordinary carbon is not enough, because lead reduction depends on a specially formulated block or an added media rather than plain adsorption, so look for certification of a lead claim against a recognized performance standard rather than a general statement about contaminants. Capacity is finite in every case, and a lead filter run past its rated volume can perform worse than none because the user believes they are protected. Replace on the rated capacity, and note that some certifications distinguish dissolved lead from particulate lead.
Find out what you actually have
Testing is the only way to know, because lead is invisible, tasteless and does not stain. Utility customers can start with the annual Consumer Confidence Report, which the EPA requires every community water system to publish and maintains a finder for, and many utilities now publish service line material inventories as well. That report tells you about the system, not about your house, so a first-draw sample from your own tap sent to a certified laboratory is the step that answers the question for your address. Well owners have no report at all and need a test. Our lead removal water filter comparison covers the certified systems once you know where you stand.
Questions people ask about how to get lead out of water
Does boiling water remove lead?
No, it makes it slightly worse. Water leaves as steam and the lead stays behind, so boiled water is marginally more concentrated than what came out of the tap.
Do standard carbon filters remove lead?
Not unless they are specifically certified for lead reduction. Plain activated carbon targets chlorine, taste and odor, so look for a lead claim certified against a recognized performance standard.
Should I filter the whole house or just the kitchen tap?
Usually just the tap, because lead is normally picked up from your own service line, solder and fixtures, which are downstream of any point of entry filter on the main line.
How can I tell if my home has a lead service line?
Check your utility's service line inventory and report, then inspect the pipe where it enters the house. A laboratory test of a first-draw sample from your own tap is what confirms the situation.