Visual inspection or dust wipe: which one does your town require?
August 6, 2026The method is set per municipality by the NJ DCA. Dust-wipe sampling is mandatory only where at least 3% of tested children show elevated blood lead levels; everywhere else the standard is a visual inspection, and the inspector may add dust wipes at their discretion. Hudson County municipalities confirmed so far are visual, per the DCA method list (PDF).
The two methods, side by side
| Visual inspection | Dust wipe sampling | |
|---|---|---|
| What it checks | Condition of painted surfaces (deterioration) | Lead dust on floors, sills, wells, sent to a lab |
| Time on site | 30–60 min per unit | Similar visit plus lab turnaround (days) |
| Cost | Lower | Higher: lab fees per sample |
| Where required | Most municipalities, incl. Hudson County towns confirmed so far | Municipalities with ≥3% elevated child blood lead |
| Pass result | Lead-safe certificate, 2 years | Lead-safe certificate, 2 years |
When dust wipes show up in a visual town anyway
Two cases. First, the inspector has discretion: visible dust conditions or a recent history of hazards can justify sampling. Second, after remediation work, dust-wipe clearance testing is how the fix gets verified before the unit is re-certified. Neither changes your town’s baseline method.
Method questions
It measures a different thing. Visual finds deteriorated paint; dust wipes measure actual lead loading on surfaces. The DCA assigns the stricter method where children are already being exposed.
Yes. Some owners do it for extra assurance in units with young children. It adds lab cost and a few days.
Check your row in the Hudson County requirements table; it tracks the DCA list.
Tell us the address; we confirm the method and book accordingly.