Cooling tower compliance
That's up from every 90 days, citywide, since May 2026. AMC provides Legionella culture sampling, post-remediation verification retesting, and the maintenance program & plan documentation the City requires — for cooling tower owners across the five boroughs, with lab analysis through our ELAP-certified partner.
Since May 2026, NYC Health Department rules require cooling tower owners to test for Legionella bacteria every 31 days while the tower is in use — three times more often than the previous 90-day interval. The change followed a 2025 Legionnaires' disease cluster in Central Harlem and was enacted to catch elevated bacteria levels faster, citywide.
There are currently around 4,000 buildings with registered cooling towers in New York City, and a live Health Department investigation on the Upper East Side has already ordered dozens of buildings to clean, disinfect, and retest theirs. Whether or not your building is part of an active investigation, the 31-day requirement now applies to every registered tower in the city.
An initial positive screening result doesn't confirm live bacteria — that takes a follow-up culture test, which typically takes about two weeks. Once your tower has been cleaned and disinfected, a verification retest is what confirms the treatment worked. We can help with both the culture testing and the retest.
Testing, documentation, and compliance support for cooling tower owners and the property managers who oversee them.
Sampling on your required 31-day cycle, with lab analysis through our ELAP-certified partner and results and required actions communicated clearly.
After a cooling tower has been cleaned and disinfected, we sample and retest to confirm the treatment brought levels back into compliance.
Written or updated to meet current requirements, including sampling schedules, immediate-testing triggers, and a shutdown/disinfection plan.
Support for NYS and NYC cooling tower registry filings and the annual certification due each November 1st.
If a result comes back elevated, we help coordinate the required 24-hour health department notification and next steps.
We track your 31-day cycle so testing happens on time, every time, without you having to track the calendar yourself.
Certified as a Minority Business Enterprise with Empire State Development, NYC SBS, NYC SCA, Port Authority of NY & NJ, and MTA.
Backed by a New York State–licensed Professional Engineer and 25+ years of environmental engineering work in NYC.
Based in Astoria, with the density to respond quickly across all five boroughs on a recurring testing schedule.
Tell us about your cooling tower(s) and we'll follow up with scope and pricing.