NYC Adopts Stricter Lead Dust Thresholds: What Property Owners, Contractors, and Inspectors Need to Know

The New York City Department of Health and Mental Hygiene (NYCDOHMH) has adopted the amendment to Article 173 of the NYC Health Code that lowers the thresholds for “lead-contaminated dust” and requires laboratories that test for it to hold both NLLAP and ELAP accreditation. The Board adopted the resolution at its September 17, 2026 meeting, and the Notice of Adoption is now posted on the NYC Rules website.

This is a final rule and it’s effective on November 5, 2026. If you work in lead-based paint inspection, abatement, or property management in New York City, the adopted rule affects you.

Background: Where These Numbers Come From

In 2019, following Local Law 66, the Board of Health adopted dust-lead thresholds that the Board describes as the lowest in the nation: 5 µg/ft² on floors, 40 µg/ft² on window sills, and 100 µg/ft² in window wells. NYC Administrative Code § 27-2056.2(8) allows the Board to adopt stricter standards and requires it to lower its thresholds when the EPA or HUD does so.

The EPA lowered its own dust-lead standards effective January 2026, in response to a 2021 court mandate. The EPA rule created two separate standards:

• Pre-abatement (hazard identification): the “dust-lead reportable level” (DLRL). Any reportable level of lead in dust on floors or interior window sills, as measured by an NLLAP-recognized laboratory, is a hazard.

• Post-abatement (clearance): the “dust-lead action levels” (DLALs) of 5 µg/ft² for floors, 40 µg/ft² for window sills, and 100 µg/ft² for window wells.

The EPA also updated its laboratory standards (LQSR 4.0). NLLAP-recognized laboratories must be able to quantify lead in dust wipe samples at 80% of the lowest action level. With a lowest action level of 5 µg/ft², that is 4 µg/ft².

What the Board Adopted

NYC did not adopt the EPA’s two-tier system. The Board adopted a single standard for “lead-contaminated dust” meaning these new thresholds apply to both Pre-Abatement Hazard Identification (Dust Lead Reportable Levels [DLRL]) and Post-Abatement Clearance (Dust Lead Action Levels [DLAL]):

Surface	Previous NYC Threshold	NEW NYC Threshold Effective 11/5/2026	Current USEPA Levels
			DLRL	DLAL
Floors	5 µg/ft²	4 µg/ft²	Any Reportable Level of Dust	5 µg/ft²
Windowsills	40 µg/ft²	32 µg/ft²	Any Reportable Level of Dust	40 µg/ft²
Window Wells / Troughs	100 µg/ft²	80 µg/ft²	--	100 µg/ft²

These thresholds are 20% below the previous NYC clearance levels and lower than the EPA action levels. A sample at or above the listed level meets the new definition of lead-contaminated dust.

The new lowered NYC standards will apply to testing for lead dust hazards on floors and windowsills during inspections of homes under Health Code § 173.13(d)(1) as well as to lead-contaminated dust clearance testing of floors, windowsills, and window wells after abatement pursuant to Health Code § 173.14(e)(3)(I)(iv)

New Laboratory Requirements

Any laboratory testing dust for lead under these provisions must now be accredited by both programs:

• ELAP: the New York State Environmental Laboratory Approval Program. The Health Code now specifies accreditation in the Solid and Chemical Materials (Solid Waste and Soils) field.

• NLLAP: the EPA National Lead Laboratory Accreditation Program.

The amendment adds a defined term, “lead-contaminated dust clearance test,” which means testing by an NLLAP and ELAP-certified laboratory on floors, window wells, and window sills in a dwelling after abatement.

If your current lab holds ELAP but not NLLAP accreditation, confirm its status now.

What This Means for You

Property Owners and Building Managers

Your clearance standard after lead abatement or remediation work gets tighter. A floor sample that passes clearance today at 4.5 µg/ft² meets the new definition of lead-contaminated dust and does not pass come November 5^th.

• The work area may not be cleared for permanent reoccupancy until results from an ELAP and NLLAP-accredited laboratory show there is no lead-contaminated dust in the dwelling.

• Temporary access to work areas may still be allowed if cleanup is completed and dust samples are collected as the Code requires.

• You must give the occupants a copy of all lead-contaminated dust clearance test results. When the Department or the Commissioner has ordered abatement or remediation, copies must also be submitted to the Department.

• Records of lead-based paint remediation work, including clearance test results, must be kept for ten years or transferred to a subsequent owner.

  
  

Contractors and Abatement Firms

Post-work cleaning has to meet a lower number before the work area can be cleared. The firm and worker requirements in § 173.14(c)(2) are carried through in the amended text:

• Work ordered by DOHMH or HPD, or work that disturbs over 100 square feet per room under the cited Administrative Code and Health Code provisions, must be performed by a firm certified by the EPA for lead abatement, using workers trained at a minimum under 24 C.F.R. § 35.1330(a)(4).

• Clearance testing after that work, after smaller work (between 2 and 100 square feet per room), and after work on unit turnover must be performed by a third party who is independent of the owner and of any individual or firm that performs the work. Clearance personnel must be trained at a minimum under 24 C.F.R. § 35.1340(b)(1).

  
  

Inspectors and Risk Assessors

The new definition in § 173.14(b) covers both inspection and clearance contexts. The cross-reference in § 173.13(d)(1) to the clearance levels in § 173.14(e) is removed. Apply 4 µg/ft² for floors and 32 µg/ft² for window sills during investigations, and confirm that every lab you use for wipe samples holds both NLLAP and ELAP accreditation.

Read the Adopted Rule

The full Notice of Adoption, including the statement of basis and purpose and the amended Health Code text, is available on the NYC Rules website: https://rules.cityofnewyork.us/wp-content/uploads/2026/10/Art.-173-NOA_Amendment-of-Lead-Dust-Rules_10-5-26-1.pdf