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Lead-Safe Wisconsin: Where is Lead Commonly Found in Wisconsin?

Side of red shed type building with peeling paint and door.

There are many sources of lead in the environment that can harm people’s health. Children are most at risk for exposure to lead-based paint found in homes and child care centers built before 1978. Adults can be harmed by lead poisoning, too—most commonly in the workplace. Plus, they can unknowingly bring lead dust home with them and expose their children.

The primary source of lead exposure in Wisconsin is lead in paint or varnish in household dust. Yet it can also be found in the soil and air from car, plane, and factory emissions—and it’s been found in water in some parts of the state.

Less commonly in Wisconsin, lead has been found in other products, such as home remedies, makeup, and certain spices. Learn more about less common sources of lead.

Learn about the sources of lead exposure below.

Exposure to lead-based paint is the main source of lead poisoning in Wisconsin. Although lead was banned from paint used on the interiors and exteriors of homes in 1978, homes built before 1978 can still have lead-based paint under layers of newer paint.

The risk of exposure to lead-based paint increases when it breaks down into smaller particles. The smaller the particles, like lead dust, the more easily they can move around and be absorbed by the body.

This breaking down of lead-based paint usually happens when it’s allowed to deteriorate over time, or when it’s disturbed during a renovation project. Broken-down lead paint and dust can stick to skin, toys, soil, food, and other surfaces. Lead gets in the body when a person swallows or breathes in lead-contaminated dust.

Sources of exposure

  • Lead dust from lead-based paint that is breaking down or gets disturbed during renovations or cleaning. Lead can get in the body if lead dust gets on hands or other items that then touch a person's mouth. Lead dust can also get in the body if a person breathes it in. Toddlers and young children are especially at risk.
  • Another way exposure occurs is when children chew on things, such as:
    • Banisters
    • Door frames
    • Doors
    • Fences
    • Furniture
    • Railings
    • Porches
    • Stairs
    • Windows
    • Window sills
  • Even surfaces covered by a new layer of paint can be a source of exposure when underlying layers of lead-based paint break through.
  • Children can also be exposed to lead dust through varnish if they chew things like floors, stairs, doors, windows, wood trim, and old baby cribs.

Reducing your risk

Lead-based paint that is intact, undisturbed, and inaccessible to young children may not pose a lead hazard and should be left alone. If it’s going to be disturbed during a renovation project, the person doing the work must be a certified lead-safe renovation contractor, according to Wisconsin’s Lead-Safe Renovation Rule. If you live in a home built before 1978, you can hire a certified lead-safe renovation company.

You may be eligible for funding to fix your lead hazard.

Other ways to prevent or reduce your exposure to lead-contaminated paint and dust found in your home include:

  • Washing your hands before eating or touching your mouth.
  • Cleaning window wells with damp paper towels and grease-cutting soap.
  • Mopping floors or cleaning them with a HEPA vacuum.
  • Never using power tools, such as a power sander or washer, to remove chipped and peeling paint.

More information

People can swallow lead from soil when they put their hands to their mouths or eat vegetables from a garden with soil contaminated by lead. Lead in soil also may be inhaled if it’s re-suspended in the air or tracked into your house.

The only way to know if your soil is contaminated with lead is to test it. Testing is especially important if you’re planning to plant a garden. The U.S. Environmental Protection Agency (EPA) defines a soil lead hazard as 400 parts per million (ppm) in play areas and 1,200 ppm average for bare soil in the rest of the yard.

For more information, view Human Health Hazards: Lead in soil from exterior lead paint, P-45015 (PDF).

Sources of exposure

Lead makes its way into the soil around homes through:

  • Environmental emissions
  • Leaded gasoline and aviation fuel
  • Paint

Lead is naturally occurring and can be found in high concentrations in certain areas. In addition, soil, yards, and playgrounds can become contaminated when exterior lead-based paint from houses or buildings flake and peel, getting into the soil. Lead from gasoline, aviation fuel, and factory emissions can also get into the soil.

Reducing your risk

There are several ways to prevent or reduce your exposure to lead found in the soil. Here are a few:

  • Wash your hands after spending time outside, especially before eating or touching your mouth.
  • Construct walkways out of stepping stones, cement, or gravel to prevent people from tracking soil into the house.
  • Keep play areas and gardens at least 3 feet away from the house and garage because this area usually has more lead in it than the rest of the yard.
  • Maintain a healthy lawn without open areas of bare soil.
  • Plant hardy shrubs around the house to keep children out of the dripline.
  • Remove a thin layer of the most heavily contaminated soils (lead over 5,000 ppm) and take to a landfill.
  • Use mulch, wood chips, or gravel to cover soil in the dripline.

If there is a lot of visible paint in the bare soil and yard, consider:

  • Installing a fence that separates play areas from buildings with lead paint as a temporary solution.
  • Mowing the grass or soil with a thatching blade and collection bag and getting rid of waste.
  • Raking up and disposing of all visible chips.
  • Using a high-efficiency particulate air (HEPA) vacuum to collect visible chips from the surface before employing other treatment options.

Learn more from the EPA about sources of lead.

Lead can get in the body if you breathe in lead-contaminated dust or air pollution.

In 2010, the EPA revised the requirements for measuring lead in the air. This revision expanded the country’s lead monitoring network to better comply with the 2008 revised lead standard. The primary, health-based standard for lead in the air is 0.15 micrograms per cubic liter (µg/m3). All counties in Wisconsin meet this standard.

Sources of exposure

  • Lead dust from paint, soil, or lead-contaminated items from a jobsite that re-enters the air.
  • Stripped lead paint removed from a surface with a torch.
  • Lead in air pollution from leaded aviation fuel, ore and metals processing facilities, lead smelters, waste oil and solid waste incineration, and battery and lead alkyl manufacturing.

Reducing your risk

Reduce your risk of exposure to lead in the air by:

  • Covering bare patches of soil with mulch or sturdy shrubs.
  • Never using an open flame to burn off lead-based paint or varnish.
  • Never using power tools, such as a power sander or washer, to remove chipped and peeling paint.

More information

Lead is typically not found in source drinking water. However, it can enter drinking water through corrosion in plumbing materials, especially in places of high acidity or low mineral content. The EPA estimates that drinking water accounts for 10-20% of lead exposure cases.

Risk from lead-contaminated water varies depending on the person. Pregnant women and babies who drink formula are at a higher risk for exposure to lead in drinking water, for example.

Sources of exposure

Homes built before 1968 are more likely to have lead pipes, fixtures, and solder. Beginning in January 2014, changes to the Safe Drinking Water Act reduced the maximum amount of lead content allowed in pipes, pipe fittings, plumbing fittings, and fixtures—from 8% to 0.25%.

Lead in water must be below 15 parts per billion, according to EPA standards.

Reducing your risk

The only way to find out if a home has high levels of lead in the drinking water is to test the water. If it hasn’t been tested, there are several things you can do to reduce how much lead you ingest from drinking water, including:

Bathing is not typically a problem because lead doesn’t enter the body through the skin. The only way it can be dangerous is if you swallow bath water.

More information

Glossary

 
Last revised August 1, 2024