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7/10

TowerGuard NYC

A compliance app for NYC building managers that tracks every cooling tower and hot-water heater in their portfolio, scores Legionella risk from quarterly test results, and lights up the moment an outbreak pops up inside your radius.

Target user

NYC building and facilities managers responsible for cooling towers under Local Law 77

Features
  • Auto-scheduled Legionella sampling 90 days out per NYC Local Law 77/78 with email reminders to the certified lab
  • Portfolio-wide risk heatmap that scores each building from prior test history and water-system age
  • Live outbreak proximity alerts sourced from DOHMH postings, with configurable 0.5–5 mile radius per address
  • One-click audit packet (test logs, maintenance logs, certifications) exportable to PDF for DOHMH inspectors
Why now

Two more deaths in the active Manhattan outbreak are pushing 500+ Google searches this week, and DOHMH is actively canvassing cooling towers right now — the compliance angle is permanent under Local Law 77 but the outbreak gives a sharp acquisition push.

Signals · overall 7/10
Demand
8/10

Confirmed 2025 Central Harlem outbreak (118 cases, 7 deaths per NEJM) plus active Upper East Side cluster per NBC NY; ~5,000 NYC cooling towers under LL77 and NYC just doubled testing cadence — sharp, time-boxed acquisition window.Outbreak of Legionnaires' Disease Associated with Cooling Tower Systems, Central Harlem, July–August 2025What to know about Upper East Side Legionnaires' disease cluster - NBC New York

Whitespace
4/10

Vitralogy is already a purpose-built NYC-only LL77 compliance tool with ~200 building managers; Ecolab/Nalco vendor portals and generic CMMS (Corrigo, UpKeep, MaintainX) cover adjacent needs. Outbreak-radius alerting is a real differentiator but the core compliance wedge is taken in NYC.Cooling Tower Legionella Compliance SaaS for Building Owners and Water Treaters

Monetization
7/10

Vitralogy proves willingness to pay at ~$6,000/year per multifamily building; NYC fines up to $25,000/violation and possible jail time create urgency; SaaS pricing model of $200–500/building/month is benchmarked and credible.Cooling Tower Legionella Compliance SaaS for Building Owners and Water TreatersNYC Cooling Tower Compliance: Your Guide to Local Law 77 & 159

Longevity
8/10

LL77 is permanent city law; LL159 (effective May 8, 2026) tightens testing from every 90 days to every 31 days; ASHRAE Standard 514 (adopted July 2024) expands scope nationally; CDC reports ~10.4% annual case growth since 2003 — regulatory tailwind is multi-decade.LL77 — NYC compliance guide | LLDeskNYC Cooling Tower Registration Info & Services

Feasibility
6/10

NYC DOHMH already publishes a public cooling tower registry and GIS data, and Lab/ASHRAE compliance rules are well-documented — core app build is moderate, but live outbreak-alert feed integration with DOHMH alerts and lab turnaround data adds meaningful complexity.NYC Health — Cooling Tower Registration and MaintenanceLL77 — NYC compliance guide | LLDesk

legionnaires disease · 500+ searches · USGoogle Trends · 2026-07-20 (4d ago)