RECENT PROJECTS ★★★★★
Edison, Middlesex County, NJ Multi-day municipal park testing with 11 expedited E. coli and coliform samples per day. Clinton Hill / Bed-Stuy, Brooklyn Metals, minerals and corrosivity testing cleared a federal facility after discoloration complaints. Central Park West, Manhattan Apartment Legionella testing with full culture, speciation and revised reporting. LaGuardia Airport, Terminal B, Queens Three potable-water sampling events at a LaGuardia Airport terminal, with full electronic data deliverables. Sunset Park, Brooklyn Twenty-sample academy lead assessment across two events, each with electronic data deliverables. Carteret, Middlesex County, NJ PWTA source verification established municipal water service for a New Jersey real estate transaction. Bernardsville, Somerset County, NJ Expanded PWTA home-sale panel across raw and treated water; every primary standard passed. West Islip, Suffolk County, NY Microplastics testing evaluated a countertop filter; no particles were detected. Upper East Side, Manhattan Legionella testing found two serogroups across four points, indicating a shared-building source. East Hampton, NY Full-spectrum residential baseline across three points; every parameter passed applicable standards. Governors Island, NY Six-event quarterly potable-water monitoring program for a Governors Island facility. Corona, Queens Four lead-testing campaigns for an educational center, with complete regulatory documentation. Lower Manhattan Transit Hub Pre-opening potable-water clearance for a national restaurant at a Lower Manhattan transit hub. East Village, Manhattan Preschool lead and potability assessment in Lower Manhattan, delivered with EDD for regulatory submission. Far Hills, Somerset County, NJ Private well panel completed for a homeowner water quality assessment. Ossining, Westchester County, NY Expedited Legionella testing at a state correctional housing unit following a positive case. Peapack, Somerset County, NJ New Jersey PWTA-compliant private well panel completed for a real estate transaction. Governors Island, NY Recurring facility potable water monitoring, prior-year sampling event. Jamaica, Queens GSA commissioning panel for new fixtures, including lead, copper and Legionella under AWWA C651. Ridgewood, Queens Ten point-of-use lead assessment, 20 total samples, for a Queens multi-family ownership group. Upper West Side, Manhattan K-8 school lead testing found one elevated fixture while clearing the remaining campus outlets. Bronx, NY Commercial facility water quality testing in the Bronx. Staten Island, NY Full-facility potable water testing for a Staten Island community services organization, revised and reissued report. Union Square / Flatiron, Manhattan Three-point E. coli and coliform monitoring from municipal entry to the roof-level supply. Bridgewater, Somerset County, NJ Expanded PWTA well testing found a PFAS exceedance requiring disclosure before a home sale. Hewitt, Passaic County, NJ 18-compound PFAS panel for a New Jersey Spill Fund-related property assessment. Rego Park, Queens Early childhood center lead testing with full report, invoice, and RegComp package. Fort Totten, Queens, NY Metals, chemistry and bacteria testing across two U.S. Army Reserve building systems. Long Island City, Queens PFAS and lead panel for a Long Island City multi-family property, including a report amendment to add the lead parameter. Morristown, Morris County, NJ Private well bacteria-failure resampling and revised reporting completed before a real estate closing. Flatiron District, Manhattan Three-point E. coli and coliform testing across a commercial building returned clean results. Newark, NJ Charter school lead testing with EDD and Appendix D regulatory reporting. Highbridge, Bronx Potable water testing for a Bronx community development organization's facility. Piscataway, Middlesex County, NJ PWTA well panel completed for a real estate transaction. East 76th Street, Manhattan Upper East Side residential engagement including Legionella analysis alongside the standard potable panel. Clifton, Passaic County, NJ Annual steam-sterilizer feedwater testing for a surgery center under ANSI/AAMI ST108. Lincoln Square, Manhattan Lead testing at 11 early-childhood fixtures, sampled before program hours. Chester, Morris County, NJ PWTA well panel completed for a real estate transaction. Prospect Avenue, Bronx Three lead-testing campaigns for a Bronx Head Start early-childhood program. Bushwick / East Williamsburg, Brooklyn Six-fixture federal office screening for Legionella, bacteria, lead and copper; all samples passed. Kingsbridge, Bronx Preschool potable water and lead assessment in the North Bronx. Liberty Township, Warren County, NJ Private well bacteria-failure resampling and revised reporting completed before closing. Flatiron, Manhattan Potable water commissioning for a Sixth Avenue commercial property. Chelsea, Manhattan Three-point E. coli and coliform testing across a commercial building's vertical water supply. Staten Island, NY Two-point E. coli and coliform testing documented potable-water compliance for a contractor. Upper East Side, Manhattan Legionella panel at a East 70th Street residential property, run alongside the standard potable panel. Upper East Side, Manhattan Multi-unit potable water testing across four residential apartments held by a foreign consulate. Bethpage, Long Island, NY Multi-point potability testing for a food-service facility, with every sample passing. Norwalk, Fairfield County, CT Comprehensive 83-parameter potability and microplastics baseline for whole-house filtration planning. Forest Hills, Queens Point-of-use potable water testing for a Forest Hills cooperative apartment. Staten Island, NY Food service facility potable water testing, repeat engagement across three sampling events. Upper Manhattan Emergency bacteria testing isolated contamination to an unknown foundation source, not the potable tap. Manhattan Valley (Upper West Side), Manhattan Five-point testing cleared the city main and isolated corrosion and sulfide issues within the property. Tribeca, Manhattan Tribeca high-rise baseline covered hot and cold water, with no PFAS or microplastics detected. Greenpoint, Brooklyn Industrial process-water metals testing identified very high nickel in a pre-treatment stream. Saddle River, Bergen County, NJ Private well panel expanded to include gross alpha radiological and PFAS analysis, treated and untreated points. Staten Island, NY Repeat hydrant and water-main clearance testing at two Staten Island construction sites, all clean. South Plainfield, Middlesex County, NJ DI water testing confirmed no bacteria and conductivity within ASTM Type II range. Kips Bay, Manhattan Annual 17-point deionized-water purity testing for a global pharmaceutical facility. Upper East Side, Manhattan Three-point residential metals and corrosivity panel confirmed all results within applicable standards. Upper East Side, Manhattan High-rise apartment lead and potability testing. Staten Island, NY Annual seafood-facility bacteria testing included a clean resample after ice-machine remediation. West Village, Manhattan Large-scale residential lead testing with 58 initial sample points and a 26-sample follow-up. Brewster, Putnam County, NY Eight-point office Legionella screening found elevated L. pneumophila at two matching fixtures. Staten Island, NY Multi-family building lead and potability testing with revised final report. Bay Ridge, Brooklyn Residential potable water analysis for a Brooklyn property. Jackson Heights, Queens Development center lead and potability testing with report and RegComp. Inwood, Manhattan Two-phase cooperative apartment testing paired a 30-parameter panel with a targeted bacterial retest. First Avenue, Manhattan Expedited Legionella testing for a Manhattan construction site's compliance timeline. LaGuardia Airport, Queens Annual aviation wastewater panel covering metals, VOCs, SVOCs, PCBs and 40 PFAS compounds. Brooklyn Heights, Brooklyn Condominium testing identified iron-reducing bacteria as the likely cause of discolored hot water. Flatiron, Manhattan Sixteen-parameter metals and minerals panel for a wellness facility's cold-plunge tub. East Hampton, Long Island, NY Full private well panel, expanded to include radiological analysis. Park Avenue, Manhattan Commercial Legionella testing with complete culture, serogroup identification and revised reporting.
RECENT PROJECTS ★★★★★
LaGuardia Airport, Terminal B, Queens Three-event potable-water testing with electronic deliverables. Hewitt, Passaic County, NJ 18-compound PFAS panel for a New Jersey property assessment. West Village, Manhattan Lead testing with 58 initial samples and a 26-sample follow-up. Upper East Side, Manhattan Potable-water testing across four consulate-held apartments. Lower Manhattan Transit Hub Pre-opening potable-water clearance for a national restaurant. Upper Manhattan Emergency testing isolated a non-potable contamination source. Morristown, Morris County, NJ Private well resampling completed before a real estate closing. Edison, Middlesex County, NJ Expedited E. coli and coliform testing at a municipal park. Kips Bay, Manhattan Annual 17-point DI-water purity testing for a pharmaceutical site. Newark, NJ Charter school lead testing with complete regulatory reporting. Lincoln Square, Manhattan Lead testing at 11 early-childhood fixtures before program hours. First Avenue, Manhattan Expedited construction-site Legionella testing. Brewster, Putnam County, NY Office Legionella screening found two elevated fixtures. Ossining, Westchester County, NY Expedited correctional-facility Legionella testing. Upper East Side, Manhattan Residential Legionella and standard potability panel. Peapack, Somerset County, NJ PWTA private well panel for a real estate transaction. East Hampton, Long Island, NY Private well panel with radiological analysis. Far Hills, Somerset County, NJ Private well water-quality assessment. Saddle River, Bergen County, NJ Treated and untreated well testing with PFAS and radiologicals. Piscataway, Middlesex County, NJ PWTA well panel for a real estate transaction. Chester, Morris County, NJ PWTA well panel for a real estate transaction. Carteret, Middlesex County, NJ Source verification confirmed municipal water service. Liberty Township, Warren County, NJ Well bacteria-failure resampling completed before closing. Sunset Park, Brooklyn Two-event academy lead assessment with electronic deliverables. Corona, Queens Four lead-testing campaigns with regulatory documentation. Prospect Avenue, Bronx Three lead-testing campaigns for a Bronx Head Start program. Upper West Side, Manhattan School lead testing found one elevated fixture campus-wide. East Village, Manhattan Preschool lead and potability testing with regulatory EDD. Kingsbridge, Bronx Preschool potability and lead testing. Rego Park, Queens Early-childhood lead testing with RegComp reporting. Jackson Heights, Queens Development-center lead and potability testing. East 70th Street, Manhattan Residential Legionella and standard potability panel. Upper East Side, Manhattan Legionella testing indicated a shared-building source. Ridgewood, Queens Ten-point lead assessment totaling 20 samples. Governors Island, NY Six-event quarterly potable-water monitoring program. Staten Island, NY Repeat hydrant and water-main clearance testing; all clean. Park Avenue, Manhattan Commercial Legionella culture and serogroup testing. Flatiron, Manhattan Commercial potable-water commissioning. Jamaica, Queens GSA fixture commissioning for lead, copper and Legionella. Greenpoint, Brooklyn Process-water metals testing found very high nickel. Bethpage, Long Island, NY Multi-point food-service potability testing; all samples passed. Staten Island, NY Three-event food-service potable-water testing. Flatiron, Manhattan Metals and minerals testing for a cold-plunge tub. Highbridge, Bronx Potable-water testing for a community facility. Staten Island, NY Full-facility potable-water testing with revised reporting. Central Park West, Manhattan Apartment Legionella culture and speciation testing. Inwood, Manhattan Thirty-parameter panel with targeted bacterial retesting. Forest Hills, Queens Cooperative apartment point-of-use potability testing. Bay Ridge, Brooklyn Residential potable-water analysis. Brooklyn Heights, Brooklyn Testing identified iron-reducing bacteria in discolored hot water. Long Island City, Queens PFAS and lead panel for a multi-family property. Upper East Side, Manhattan High-rise apartment lead and potability testing. Chelsea, Manhattan Three-point bacteria testing across a building water supply. Union Square / Flatiron, Manhattan Three-point bacteria monitoring from entry to rooftop supply. Bronx, NY Commercial facility water-quality testing. Governors Island, NY Recurring facility potable-water monitoring. Staten Island, NY Multi-family lead and potability testing. Staten Island, NY Two-point bacteria testing documented potable-water compliance. Clifton, Passaic County, NJ Annual surgical-center feedwater testing under AAMI ST108. West Islip, Suffolk County, NY Countertop-filter microplastics testing; none detected. Manhattan Valley (Upper West Side), Manhattan Testing isolated internal corrosion and sulfide issues. Clinton Hill / Bed-Stuy, Brooklyn Federal-facility testing after discoloration complaints. Flatiron District, Manhattan Three-point building bacteria testing; all results clean. South Plainfield, Middlesex County, NJ DI water met ASTM Type II range with no bacteria detected. Bridgewater, Somerset County, NJ Expanded PWTA testing found a reportable PFAS exceedance. Fort Totten, Queens, NY Water testing across two Army Reserve building systems. East Hampton, NY Three-point full-spectrum residential baseline; all passed. Tribeca, Manhattan High-rise baseline found no PFAS or microplastics. Bernardsville, Somerset County, NJ Expanded PWTA panel; every primary standard passed. LaGuardia Airport, Queens Annual aviation wastewater panel including 40 PFAS compounds. Bushwick / East Williamsburg, Brooklyn Six-fixture federal office screening; all samples passed. Upper East Side, Manhattan Three-point residential metals and corrosivity testing. Norwalk, Fairfield County, CT 83-parameter potability and microplastics baseline. Staten Island, NY Annual bacteria testing with clean post-remediation resample.
Legionella pneumophila
Certified Point-of-Use Legionella Analysis · NY · NJ · CT · Since 1991

Certified Legionella Water Testing Labs

NELAP accredited laboratory results. Legionella analysis at the point of use — showers, faucets, pools, spas, and decorative water features — for residential and commercial properties across New York, New Jersey, and Connecticut.

POINT-OF-USE LEGIONELLA TESTING — WE TEST

Elite Industry Standards Fully Insured:  Professional Liability (E&O) General Liability Workers’ Compensation

NYS ELAP Certified Results

NELAP Accredited Analysis

Full Chain of Custody

EPA-Approved Analytical Methods

ISO 11731

Certified Water Testing Experts

35+ Years · Since 1991
✓

POINT-OF-USE LEGIONELLA TESTING — WE TEST

  • Showers and shower heads
  • Faucets and drinking water taps
  • Swimming pools and spas
  • Decorative water features and fountains
  • Residential apartment building fixtures
  • Commercial building point of use fixtures
  • Hotels, motels, and hospitality properties
  • Healthcare facility point of use sampling

Legionella Testing Services

Certified point-of-use Legionella laboratory analysis

ISO 11731 method · NYS ELAP certified results · NELAP accredited laboratory analysis · Full chain of custody · Water quality reports with findings

Residential Legionella Laboratory Testing

Certified Legionella analysis at residential showers, faucets, and fixtures. NYS ELAP certified results with expert guidance for homes, apartments, co-ops, and condos.

ISO 11731
Commercial Building Legionella Laboratory Testing

Point-of-use Legionella sampling for commercial buildings, offices, hotels, and multi-use properties. Full chain-of-custody documentation with certified water quality reports.

ISO 11731
Pool & Spa Legionella Laboratory Testing

Certified Legionella analysis at swimming pools, hot tubs, spas, and aquatic facilities. Results with regulatory agency comparison and expert findings.

ISO 11731
Decorative Water Feature Testing

Certified Legionella sampling at ornamental fountains, misting systems, and decorative water features for commercial and public properties.

ISO 11731
Multi-Family Building Programs

Building-wide point-of-use Legionella testing programs for apartment buildings, co-ops, and multi-family properties. Certified results with full documentation.

ISO 11731
Water Quality Reports

Every Legionella test includes certified water quality report with expert findings, CDC and regulatory agency comparison, and consultation on results.

ISO 11731

Legionella Testing Clients

Who we provide Legionella testing for

Property Management Companies

Point-of-use Legionella testing programs for property management companies. Building-wide fixture sampling, certified results, and annual water quality reports for multi-building portfolios.

Co-ops, Condos & Apartments

Building-wide and individual unit Legionella testing for co-ops, condo associations, and apartment buildings. Landlord compliance and tenant request testing available.

Restaurants & Food Businesses

Certified Legionella analysis for restaurants, food businesses, and commercial properties. Accepted by health departments and regulatory agencies in NY, NJ, and CT.

Schools, Daycares & BOCES

Point-of-use Legionella testing for schools, daycares, BOCES, and institutional properties. Certified results with compliance documentation.

Tenants, Renters & Landlords

Individual fixture Legionella testing for tenants and renters. Landlord compliance testing with certified results accepted by building management and regulatory agencies.

Hotels, Motels & Hospitality Properties

Certified point-of-use Legionella testing for hospitality properties. Shower, faucet, pool, and spa sampling with certified results and regulatory documentation.

Legionella testing — how it works

01

Consultation

Speak with our certified water testing consultants to identify the right point-of-use Legionella sampling locations for your property type and concern.

02

Certified On-Site Sampling

Certified specialists collect point-of-use samples at your showers, faucets, pools, spas, and water features following ISO 11731 and EPA-approved protocols. Full chain-of-custody documentation.

03

Laboratory Analysis

NELAP Accredited Analysis using ISO 11731 method. Results certified by NYS ELAP. Legionella pneumophila and other species identified and quantified.

04

Certified Report Delivered

Certified Legionella water quality report with CDC and regulatory agency comparison, plain-language expert findings, and guidance on next steps if Legionella is detected.

Legionella water testing questions

Point-of-use Legionella testing collects certified samples directly from the fixtures where water is used — showers, faucets, pools, spas, and decorative water features. This is distinct from cooling tower or large system testing. Olympian Water Testing provides point-of-use Legionella analysis for residential and commercial properties.
Routine testing helps identify potential contamination before it becomes a health risk. It supports regulatory compliance, protects building occupants, and forms an essential part of a Legionella risk management program.
ISO 11731 is the standard method for Legionella analysis in water. Analysis is performed by NELAP accredited analysis. Results are certified by NYS ELAP. Full chain-of-custody documentation on every sample.
Yes. NYS ELAP certified results, NELAP accredited analysis — accepted by NYC DOH, NJ DEP, CT DEEP, local health departments, building attorneys, and regulatory agencies for point-of-use fixture compliance.

Blog

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Complete Guide to Water Testing Laboratory Services

Complete Guide to Water Testing Laboratory Services Water testing laboratory services play a crucial role in ensuring that water is safe, clean, and suitable for…

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Water Testing Services for Safe Drinking Water

Water Testing Services for Safe Drinking Water Safe drinking water is one of the most important public health needs. Population growth, industrial activity, agricultural runoff,…

Why Choose a Certified Water Testing Laboratory

Why Choose a Certified Water Testing Laboratory

Why Choose a Certified Water Testing Laboratory Water quality directly affects public health, building water systems, industrial operations, agriculture, and environmental safety. Because water can…

Legionella Testing Service Areas

NY · NJ · CT

  • NYC Five Boroughs
  • Westchester & Long Island
  • NJ Bergen, Essex, Morris Counties
  • Jersey City & Hudson County
  • CT Fairfield, New Haven, Litchfield
  • Residential & Commercial Properties
Manhattan
Brooklyn
Queens
The Bronx
Staten Island
Westchester
Long Island
Bergen County
Jersey City
Essex County
Fairfield CT
New Haven CT
NYS ELAP Certified results · NELAP Accredited Laboratory analysis

Certified Legionella Water Testing at the Point of Use.

Olympian Water Testing is a certified and licensed water testing company specializing in point-of-use legionella testing for residential and commercial properties across NYC and the surrounding region. Our certified experts perform legionella analysis right at the fixtures people actually use, including showers, faucets, pools, spas, and decorative water features, with service throughout Manhattan, Brooklyn, Queens, the Bronx, and Staten Island, plus nearby New Jersey and Connecticut communities. Every sample follows full chain-of-custody, and our water quality consultant team delivers clear reports and expert guidance on exactly what your results mean and what to do next.
As a full-service water testing company, Olympian Water Testing also supports property owners and management companies with a complete menu of water quality and water analysis services beyond legionella. Our certified experts provide lead testing, potability testing, and bacteria testing, with screening for e coli, total coliform, and turbidity, along with pfas testing and microplastics testing for homes, buildings, and institutions. Each sample is handled in-house using laboratory-grade methods and established lab standards, and every report is prepared to the benchmarks set by accredited laboratories and professional testing labs, giving you certified, defensible results that regulators, building managers, and real estate professionals can rely on.

✓ ISO 11731
✓ EPA Approved Methods
✓ Full Chain of Custody
✓ Certified Reports
✓ Since 1991
✓ Showers & Faucets Testing
✓ Pools & Spa Water Analysis
✓ Decorative Water Features
✓ Residential & Commercial Properties
Discuss Your Legionella Testing Needs
Speak with a certified Legionella water testing expert for residential and commercial properties across New York, New Jersey, and Connecticut. We reply within 1 hour.
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