# NYC Building Water Compliance Desk > Coordinate NYC cooling-tower and building-water sampling calendars, qualified providers, custody, original reports and corrective-action evidence by system. Canonical source: https://516labs.com/nyc-building-water-compliance Last updated: 2026-08-31 ## Page summary One controlled record for every tower, sample and exception. NYC Building Water Compliance Desk 516Labs helps building owners, property managers and water-treatment teams coordinate recurring cooling-tower culture testing through qualified persons and ELAP-certified laboratories—then keeps dates, custody, results and corrective-action evidence tied to each system. [Submit a building portfolio](https://516labs.com/nyc-building-water-compliance#program-intake)[Discuss an active program](tel:5164006149) Current cadence No more than 31 days Collection QP or QP-guided sampler Analysis NYS ELAP-certified laboratory Control Dates, results and actions A recurring operating obligation ## The 31-day clock changed the workload. NYC requires Legionella culture sampling within 3–14 days after startup and at least once every 31 days while a cooling tower is operating. Sampling dates, results and triggered corrective actions create a chain of responsibilities—not a one-time test order. INVENTORY / 01 ### System register Building, tower system ID, operating period, owner contacts, qualified person, treatment provider, performing laboratory and program documents organized in one portfolio view. CALENDAR / 02 ### 31-day sampling calendar Startup windows and recurring culture dates tracked by system, with accountable parties and escalation before a due date becomes an exception. ROUTING / 03 ### Qualified routing Sampling is assigned to the qualified person or a sampler operating under that person’s guidance, with analysis routed only after relevant ELAP scope and service availability are confirmed. CUSTODY / 04 ### Sample and custody controls Collection details, chain of custody, pickup, laboratory receipt and exceptions remain tied to the correct tower and event. RESULTS / 05 ### Result threshold workflow Results are preserved with the original laboratory report and routed to the responsible qualified person, owner and treatment team for required interpretation and action. EVIDENCE / 06 ### Inspection-ready record Sampling dates, reports, custody records, documented actions and open exceptions assembled by system instead of scattered across vendors and inboxes. Operating boundaries ## Coordination without replacing the regulated parties. The owner, qualified person, water-treatment team and performing laboratory retain their regulatory and professional responsibilities. ### 516Labs desk - Portfolio and system intake - Calendar and responsibility tracking - Credential and service-scope confirmation - Quote, dispatch and custody coordination - Report collection and exception escalation ### Qualified parties - Maintenance program and plan decisions - Qualified-person supervision and portal duties - Water treatment, disinfection and corrective actions - Laboratory analysis and original reports - Owner certifications and regulatory submissions 516Labs is not a qualified person, water-treatment operator, analytical laboratory or regulatory authority. Program requirements change. Review the current [NYC Health cooling-tower inspection and sampling guidance](https://www.nyc.gov/site/doh/business/permits-and-licenses/cooling-towers-inspect.page). 516Labs confirms the applicable pathway and participating providers for each building before service is awarded. Portfolio workflow ## Turn recurring dates into controlled events. Start with the system inventory and the providers already in place. The desk can coordinate missing capacity without forcing replacement of a working incumbent. ### Import the portfolio Provide buildings, tower IDs, operating periods, current qualified persons, treatment firms, laboratories and recent sample dates. ### Resolve gaps and ownership Identify missing credentials, service areas, calendar dates, system records and escalation contacts before the next collection window. ### Coordinate each sampling event Confirm the responsible sampler, laboratory route, custody documents, pickup and receipt for the correct tower. ### Close the evidence loop Collect the original report, route results to responsible parties, log documented actions and keep unresolved exceptions visible. Building water intake ## Start with the portfolio you already operate. List the buildings or systems, last known sampling dates and current providers. The desk will identify what still needs confirmation. - Cooling-tower systems and operating periods - Current qualified person, treatment firm and laboratory - Registration IDs and next due dates - Open results, actions or documentation gaps BUILDING WATER DESK Portfolio details Creates a trackable program Your name Work email Organization Portfolio or project name Primary location Requested start date Facility count System count Systems in this request Cooling towers Drinking-water tanks Potable-water systems Other Legionella program Other building water Registration or system IDs One per line; 80 characters maximum per ID. Program requirement Create building-water request → Submitting creates a request for review, not a laboratory award or regulatory determination. Qualified persons, laboratories, treatment providers and owners retain their required responsibilities. Natural portfolio extension ## Cooling towers first. Building water next. After the recurring cooling-tower route is operating reliably, the same property record can support separate annual rooftop drinking-water tank inspections and bacteriological sampling, drinking-water investigations and other approved building-water programs. [Drinking-water testing Facility and portfolio programs](https://516labs.com/drinking-water-testing)[Water and lead programs Related property testing pathways](https://516labs.com/water-lead)[LabsNet partners Qualified capacity and protected relationships](https://516labs.com/laboratory-partners) Start with one portfolio ## Send the tower list and last sample dates. 516Labs will map the next events, existing providers and qualification gaps before proposing a managed program. [Start a portfolio intake](https://516labs.com/nyc-building-water-compliance#program-intake)Email the desk ## Contact Testing, bid and laboratory partnership inquiries: info@516labs.com