Any Detectable Lead Dust Now Counts as a Hazard: What the 2026 Federal Standard Means for Your Pre-1978 Rental

If you own a rental built before 1978, the federal definition of a “dust-lead hazard” no longer has a number attached to it. Since January 12, 2026, a hazard under EPA’s rules is any amount of lead in floor or window-sill dust that an accredited lab can report. States that run their own lead programs have until January 11, 2027 to show EPA they have caught up. The rule doesn’t order anyone to test. It changes what your paperwork says, what you hand to your next tenant, and how fast you must act for a voucher household with a young child.

What changed (fact)

• The hazard threshold is now “any reportable level.” EPA’s final rule of November 12, 2024 replaced the old dust-lead hazard standards (10 µg/ft² for floors, 100 µg/ft² for interior sills) with any level an NLLAP-recognized lab reports. The current text of 40 CFR 745.65(b) uses the old numbers “before January 12, 2026” and “any reportable level” on or after that date. (EPA final rule, 89 FR 89416)
• Post-abatement clearance got much stricter. After an abatement, dust has to test below new “action levels”: 5 µg/ft² on floors, 40 on window sills and 100 on window troughs. Both changes took effect on January 12, 2026.
• States get until January 11, 2027. States authorized to run their own program must show EPA they meet the new requirements by that date. Oregon, for example, proposed adopting them in August 2026. When the rule was published, EPA itself ran the program in Alaska, Arizona, Florida, Idaho, Montana, Nevada, New Mexico, New York, South Carolina, South Dakota and Wyoming, among others.
• Studios can now be covered. EPA’s disclosure-rule definition of target housing (40 CFR 745.103) now covers a pre-1978 0-bedroom unit (studios, efficiencies and single-room rentals) if a child under 6 lives there or is expected to.
• HUD’s lead rule points to EPA’s number. HUD’s Lead Safe Housing Rule defines a dust-lead hazard as a loading at or above “the levels promulgated by the EPA at 40 CFR 745.65” (24 CFR 35.110). HUD also lowered its elevated blood lead level trigger for children under 6 from 5 to 3.5 µg/dL. A joint HUD notice dated February 27, 2026 says that threshold is enforced from June 1, 2026, including for Housing Choice Voucher owners.

The misconception: “EPA now makes landlords test for lead”

It doesn’t. EPA says plainly that its lead-based paint rules “do not compel property owners or occupants to evaluate their property” or to take control actions. The disclosure rule adds that nothing in it “implies a positive obligation on the seller or lessor to conduct any evaluation or reduction activities” (40 CFR 745.107). The Renovation, Repair and Painting (RRP) rule is also unchanged. Its work practices apply wherever lead paint is present or assumed, and they don’t depend on dust test results.

The lower threshold matters in three real situations.

1. Your lead disclosure now carries more weight

Before a tenant is bound by a lease on pre-1978 housing, you must give them the EPA pamphlet, disclose any known lead-based paint or hazards, and hand over “any records or reports available” to you (40 CFR 745.107(a)(4)). EPA explains that this already covered risk-assessment results whether they were above or below the old standards. So the new rule doesn’t create new disclosures. It means more of them will say a hazard is present. A 2019 risk assessment that found 6 µg/ft² on a kitchen floor was “below hazard” under the old standard. Measured today, the same result would be a hazard.

EPA is renewing the paperwork approval for disclosure (nearly 40 million estimated respondents; comments close September 28, 2026, EPA ICR 1710.10). The duty itself is unchanged.

2. A voucher tenant’s child tests at 3.5 µg/dL

For units rented to Housing Choice Voucher families, 24 CFR 35.1225 sets the timeline once the housing agency is notified that a child under 6 has an elevated blood lead level. The agency must complete an environmental investigation within 15 days. The owner then has 30 days to reduce the hazards it identifies, and the job is done only when clearance is achieved. Because HUD’s hazard definition follows EPA’s, a dust wipe with any reportable lead can now be flagged as a hazard. HUD’s 3.5 µg/dL trigger will also bring more children into the process than the old 5 µg/dL trigger did.

3. You pay for an abatement

If you hire a certified firm to permanently abate lead hazards, for example to get a unit certified lead-free, the job now has to clear to 5/40/100 µg/ft². Budget for extra cleaning and possibly repeat dust testing.

What this means for an absentee owner (interpretation, not fact)

The main exposure is old reports, not new tests. A report that said “no dust-lead hazard” in 2021 still has to be disclosed, but it no longer tells a new tenant the unit is clean. EPA itself warns that a report “should not imply the absence of those conditions in perpetuity.” A certified lead-based paint-free inspection is different: EPA confirms that certifications issued before or after the rule still exempt the lease from disclosure. For older units you plan to hold for a long time, that certificate may now be worth more.

The second exposure is speed. On a voucher unit with a young child, the 30-day clock can start while you’re 1,500 miles away. How fast your local manager can line up a certified contractor now matters.

Checklist for pre-1978 rentals

1. List every unit built before 1978, including studios that could house a child under 6.
2. Gather every lead inspection, risk assessment and clearance report you have. Those are what you must disclose, whatever the numbers show.
3. Check that your lease packet includes the current EPA pamphlet and a signed disclosure form. Keep signed copies for at least three years, as the rule requires.
4. Confirm that anyone disturbing painted surfaces in those units is RRP-certified. The new standard doesn’t change that.
5. For voucher units, agree in writing with your manager on who responds, and how fast, if the housing agency reports an elevated blood lead level.
6. If your state runs its own lead program, check whether it has adopted the new standards before its January 11, 2027 reporting deadline.

Related reading: How to hire a property management company, managing an out-of-state rental yourself, the new Section 8 inspection standards, and whether out-of-state investing fits you.

This article is for general educational purposes only. It is not legal, tax, financial, environmental or investment advice. Lead-based paint rules vary by state and locality. Consult a qualified professional and your state or local lead program about your specific property.