MWRA online - home
Water System
Sewer System
Harbor and Bay
School Program
About MWRA
Doing Business with MWRA
Contact MWRA

Lead and Faucets - Questions and Answers
Massachusetts Water Resources Authority

Does MWRA water contain lead?

MWRA water is lead-free when it leaves the reservoirs. MWRA and local distribution pipes that carry the water to your community are made mostly of iron and steel, and do not add lead to water. However, lead can get into tap water through pipes in the home, lead solder used in plumbing, and some brass fixtures. Corrosion or wearing away of lead based materials can add lead to tap water, especially if water sits for a long time in the pipes before use.
More about Lead in Drinking Water

Do faucets contain lead?
Most faucets purchased prior to 1997 were constructed of brass or chrome-plated brass, which contain up to 8 percent lead (the main metals in brass are copper and zinc). Water sitting for several hours or overnight in a brass faucet can leach lead from the brass faucet interior which may produce high lead levels in the first draw of drinking water. Later regulations mandated that most faucets purchased after 1997 contain less lead than previously used thereby reducing the possible leaching of lead. However, the most recent legislation, called “Get the Lead Out,” mandates that after January 4, 2014, all faucets purchased will contain no more than a weighted average of .25 percent lead in relation to wetted surface. More about Lead in Drinking Water

How can I tell if my faucet is "lead free"?
Responding to recent regulations, faucet manufacturers have decreased or eliminated the lead in residential kitchen faucets, bathroom faucets, bar faucets, drinking fountains, and icemakers. Starting January 4, 2014, all faucets will be produced with no more than a weighted average of .25 percent lead with respect to the wetted surface. The national standard for certifying plumbing fixtures "lead free" status is determined by the National Sanitary Foundation (NSF) - the standard is International Standard 61-Section 9. New faucets meeting the NSF 61 standard will have NSF 61/9 stamped on the new faucet’s cardboard box. For more information on lead-free fixtures including catalogs and website directories, contact NSF at 1-800-NSF-MARK or

Note that the term "lead free" may be misleading since its legal definition allows a faucet to leach up to 11 parts per billion (ppb) of lead using a standard test protocol. The national action level for lead in drinking water is 15 ppb.

Are there any faucets with no lead at all?
Some faucet manufactures produce plastic faucets that have virtually zero lead. Other manufactures are substituting other metals for the lead in the brass, inserting copper tubes inside the brass faucets, or applying special coatings on the inside of the faucets in order to minimize or eliminate lead leaching. With the recent legislation, more and more faucet manufacturers are advertising faucets that adhere to the new “lead-free” definition allowing a maximum of .25 percent lead.

Does it really matter if I have an ultra-low lead faucet?
In extreme cases, older faucets can contribute up to one-third of the lead in water that has been sitting in the pipes for several hours, with the remainder coming from other plumbing such as pre-1988 lead solder joints in copper pipes. Residents who let the water run at the tap in the morning for one minute and use cold water for cooking should have little concern with respect to lead in the drinking water. If residents are still concerned, they can have their water tested. List of certified water testing labs

Do some new plumbing fixtures still contain lead?
Federal and State lead regulations do not cover any pipes, pipe fittings, plumbing fittings, or fixtures, that are used exclusively for nonpotable services like manufacturing, industrial processing, irrigation, outdoor watering, or other uses where the water is not anticipated to be used for human consumption. This includes toilets, bidets, urinals, fill valves, flushometer valves, tub fillers, shower valves, service saddles, or water distribution main gate valves that are two inches in diameter or larger.

Do some new plumbing fixtures still contain lead?
Federal and State lead regulations do not cover hose bibs, bathtub fixtures, shower heads, and industrial faucets.

Is drinking water the main source of lead exposure?
Lead contamination from lead-based paint, dirt, and dust accounts for most of the exposure. Lead from drinking water can make up to 20 percent of a person’s total exposure to lead. The two most cost effective ways to minimize lead exposure from drinking water are to 1) flush the kitchen faucet for one minute in the morning or after coming home from school/work and 2) use only cold water for drinking and cooking.

How do I get information about lead in my drinking water?
The Massachusetts Department of Public Health (DPH) has information on children and lead through the Massachusetts DPH Lead Exposure Office at (617) 284-8400 or at

The NSF certifies plumbing fixtures, water filters, and bottled water and can be reached at 1-800-NSF-MARK or on their website at
The Environmental Protection Agency (EPA) operates a National Lead Information Center at 1-800-424-LEAD or can be reached at its website

Back to top

Updated July 12, 2012