Lead paint 5 min · updated 2026

Lead Dust Wipe Testing: Protecting Children and Expectant Mothers

Lead dust wipe testing identifies invisible hazards in older homes, providing essential safety data for families with young children or those expecting a new arrival.

Short answer

Lead dust wipe testing is a specialized procedure that identifies microscopic lead particles on surfaces, which is critical for families in the San Francisco Bay Area and across California living in pre-1978 housing. ClearPoint Environmental provides independent testing-only services to ensure homes are safe for children and expectant mothers who are most vulnerable to lead exposure. By collecting surface samples for accredited lab analysis, we provide homeowners with the data needed to verify if lead levels meet EPA and California Department of Public Health safety standards.

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Key takeaways

  • Lead dust is the most common cause of childhood lead poisoning and is often invisible to the naked eye.
  • Pregnant women and children under age six are at the highest risk for developmental issues from lead exposure.
  • Testing-only companies like ClearPoint offer unbiased results without the conflict of interest found in remediation firms.
  • Federal and California laws strictly regulate lead-based paint hazards in residential rentals and renovations.

Why Lead Dust is a Critical Concern for Families

In many San Francisco Bay Area neighborhoods, older Victorian and mid-century homes are common. While these houses have character, those built before 1978 often contain lead-based paint. Over time, friction on windows and doors or general deterioration creates microscopic lead dust. This dust settles on floors, windowsills, and toys where young children play. Because children frequently put their hands in their mouths, they are at an exceptionally high risk of ingesting these toxic particles, leading to significant health concerns.

For expectant mothers, the risks are equally serious. Lead exposure during pregnancy can result in the toxin crossing the placenta, potentially affecting fetal brain development or leading to premature birth. Because there is no known safe level of lead exposure for children, proactive testing is the most effective way to ensure a home environment is healthy. Identifying the presence of lead dust before a child begins crawling or before a newborn arrives is a vital step in preventative family healthcare.

The Difference Between Paint Inspection and Dust Wipe Testing

A standard lead paint inspection identifies whether lead is present within the layers of paint on your walls. However, lead dust wipe testing is different because it measures the actual risk of exposure on surfaces. Even if paint is intact, microscopic dust can migrate from window tracks or be tracked in from exterior soil. Dust wipe testing involves using specialized, wetted wipes to collect samples from specific areas like floors and windowsills to measure the concentration of lead in micrograms per square foot.

ClearPoint Environmental specializes exclusively in this type of diagnostic testing. As an independent testing-only firm, we do not perform abatement or repairs. This ensures that our findings are completely unbiased; we have no financial interest in finding a problem that requires expensive removal services. Our goal is simply to provide California families with accurate data and peace of mind through accredited laboratory results that reflect the current safety status of their living environment.

  • Surface Wipes: Evaluates the dust children are most likely to touch.
  • Window Sills & Tracks: Identifies lead generated by friction during operation.
  • Floor Samples: Measures the accumulation of dust in high-traffic play areas.
  • Accredited Lab Analysis: Ensures results meet EPA and CDPH regulatory thresholds.
Infographic

The ClearPoint Lead Testing Process

Four steps to ensuring a lead-safe home environment.

  1. 1Initial Consultation

    Schedule an inspection for your pre-1978 home.

    Mention CLEAR50 for a $50 discount.

  2. 2On-Site Sampling

    Certified technicians collect dust wipes from key areas.

    We focus on floors, sills, and play zones.

  3. 3Lab Analysis

    Samples are sent to an accredited third-party laboratory.

    Results are typically ready in 24-48 hours.

  4. 4Clearance Report

    Receive a detailed report comparing results to safety standards.

    Independent data you can trust for your family.

Understanding California Lead Safety Standards

California has some of the most stringent lead safety regulations in the country, overseen by the California Department of Public Health (CDPH). These standards define what constitutes a lead hazard in residential settings. When we conduct testing, we compare your home's laboratory results against these specific state and federal thresholds to determine if a hazard exists. This information is crucial for renters, new homebuyers, and those planning a nursery renovation.

Our pricing is transparent and designed to be accessible for growing families. With a flat $475 base rate covering the initial inspection and a range typically between $475 and $625 depending on the number of samples, we provide a professional service without hidden fees. Using the coupon code CLEAR50 further reduces the cost, making it easier for Bay Area residents to prioritize environmental safety during the critical stages of early childhood development.

Standard Lead Dust Clearance Levels
Surface TypeEPA/State Limit (µg/ft²)Significance
Interior Floors10Highest contact area for crawling infants.
Window Sills100Common area for toddlers to pull themselves up.
Window Troughs400Area where friction most often creates dust.

When to Schedule a Lead Dust Test

Timing is everything when it comes to environmental safety. We recommend scheduling a lead dust wipe test if you are pregnant and living in a pre-1978 home, or if you have children under the age of six. It is also highly recommended after any home renovation project, even if the contractors claimed to use lead-safe practices. Dust can settle long after the tools are put away, and a clearance test is the only way to verify the area is truly clean.

If you are moving into a new rental property in California, landlords are required to disclose known lead hazards. However, many landlords may not be aware of the current dust levels. Conducting your own independent test provides a baseline of safety. ClearPoint Environmental offers fast turnaround times, with lab results typically available within 24 to 48 hours, allowing you to make informed decisions about your family's living space without unnecessary delays.

Our Commitment to Bay Area Families

ClearPoint Environmental serves the entire San Francisco Bay Area from our Fremont hub, reaching families from San Jose to Oakland and beyond. We understand that the health of your children is your top priority. By choosing a testing-only company, you are opting for a service that prioritizes accuracy and integrity over sales. We provide the professional documentation you need to consult with pediatricians or landlords regarding the safety of your home.

Our technicians are experienced in the specific housing stock found throughout California. Whether you reside in a historic East Bay craftsman or a Peninsula mid-century modern, we provide the localized expertise required to identify potential lead risks. Contact us today at (510) 901-5743 to discuss your concerns or to schedule an inspection that helps safeguard the future of your youngest family members.

Customer reviews

Rated 5.0 out of 5 across California

119 verified reviews from homeowners, property managers, contractors and insurance adjusters who needed certified answers fast.

5.0

119 reviews

  • 5 out of 5 stars

    Bilingual and respectful

    They explained everything to my parents in Spanish and English. Very patient team.

    Gloria M. · Richmond ·

  • 5 out of 5 stars

    Reliable

    Easy scheduling, clean report formatting. We will use them again on the next unit turn.

    Aaron S. · Roseville ·

  • 5 out of 5 stars

    Bathroom remodel cleared

    Old sheet vinyl and backer board both sampled. The report cited the exact layers so the tile crew knew what to do.

    Jessica T. · Sacramento ·

  • 5 out of 5 stars

    Straight answers

    No scare tactics, no vague pricing. He told me what testing could and could not tell me before I paid a dime.

    Marcus B. · San Francisco ·

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FAQ

Lead Testing for Families: common questions

Why is lead dust more dangerous than lead paint chips?

While paint chips are a hazard if eaten, lead dust is microscopic and easily inhaled or ingested during normal hand-to-mouth activity. It spreads invisibly throughout a home, making it harder to detect without professional wipe testing.

Does ClearPoint perform lead removal if a test comes back positive?

No, ClearPoint Environmental is a testing-only company. We never perform abatement or remediation, which ensures our testing results are 100% unbiased and free from any conflict of interest.

How much does a lead dust test cost in the Bay Area?

Our base price starts at $475, with a typical total range of $475 to $625. Additional samples beyond the initial scope are $55 each, and you can use coupon code CLEAR50 to save $50 on your service.

Is lead testing required for California daycare centers?

Yes, California law requires licensed child care centers to test their drinking water for lead, and many property owners also conduct dust and paint testing to comply with general safety and liability standards for children's environments.

How soon will I get my lead test results?

We prioritize fast communication for families. Once the samples reach our accredited laboratory partners, results are typically processed and returned to you within 24 to 48 hours.

How we compare

What you actually get in every metro we cover

Asbestos testing service comparison
ProviderHow you get a priceTurnaroundNotes
Typical local labQuote by email, days later3-4 business daysRush turnaround costs extra
Abatement contractorFree test bundled with a bidVariesIncentive to find a problem
ClearPoint EnvironmentalFree quote on the phone in 2 minutesFast accredited turnaroundTesting only · $50 OFF today

Every job is scoped by the number of distinct materials being disturbed, so we quote it by phone instead of posting a number that will not match your project. Call (510) 901-5743 and $50 off today comes off the booking.

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Glossary

Asbestos terms your contractor and lab report will use

ACM
Asbestos-containing material — any material with more than 1% asbestos by weight.
PACM
Presumed asbestos-containing material — older suspect material treated as positive until testing proves otherwise.
Friable
Material that can be crumbled by hand pressure and therefore releases fibers easily.
Non-friable
Asbestos locked in a hard matrix such as floor tile or stucco; hazardous mainly when cut or broken.
PLM
Polarized Light Microscopy, the standard laboratory method for identifying asbestos in bulk building samples.
Point count
A more precise PLM technique used when asbestos content is near the 1% regulatory threshold.
Homogeneous area
A group of material that is uniform in color, texture and installation date — each one needs its own sample.
Chain of custody
The signed record tracking a sample from collection to laboratory analysis.
Chrysotile
White asbestos, by far the most common type found in most states residential materials.
Amosite
Brown asbestos, typically found in insulation board and thermal products.
Encapsulation
Sealing or covering asbestos material in place instead of removing it — often the cheapest compliant option.
Abatement
Licensed removal of asbestos material under containment, performed by a certified abatement contractor.
NESHAP
Federal air standard requiring an asbestos survey and notification before most demolition and renovation work.
your state environmental agency
state Commission on Environmental Quality, the state agency enforcing asbestos and demolition air rules in most states.
DSHS
state Department of State Health Services, the state agency that licenses asbestos consultants and enforces the state asbestos rules.