RECENT PROJECTS ★★★★★
Ossining, Westchester County, NY Expedited Legionella testing at a state correctional housing unit following a positive case. Prospect Avenue, Bronx Three lead-testing campaigns for a Bronx Head Start early-childhood program. Forest Hills, Queens Point-of-use potable water testing for a Forest Hills cooperative apartment. Ridgewood, Queens Ten point-of-use lead assessment, 20 total samples, for a Queens multi-family ownership group. West Islip, Suffolk County, NY Microplastics testing evaluated a countertop filter; no particles were detected. LaGuardia Airport, Queens Annual aviation wastewater panel covering metals, VOCs, SVOCs, PCBs and 40 PFAS compounds. Jackson Heights, Queens Development center lead and potability testing with report and RegComp. Central Park West, Manhattan Apartment Legionella testing with full culture, speciation and revised reporting. Clinton Hill / Bed-Stuy, Brooklyn Metals, minerals and corrosivity testing cleared a federal facility after discoloration complaints. Jamaica, Queens GSA commissioning panel for new fixtures, including lead, copper and Legionella under AWWA C651. Edison, Middlesex County, NJ Multi-day municipal park testing with 11 expedited E. coli and coliform samples per day. Union Square / Flatiron, Manhattan Three-point E. coli and coliform monitoring from municipal entry to the roof-level supply. Lincoln Square, Manhattan Lead testing at 11 early-childhood fixtures, sampled before program hours. Park Avenue, Manhattan Commercial Legionella testing with complete culture, serogroup identification and revised reporting. Upper East Side, Manhattan Legionella testing found two serogroups across four points, indicating a shared-building source. Bridgewater, Somerset County, NJ Expanded PWTA well testing found a PFAS exceedance requiring disclosure before a home sale. Morristown, Morris County, NJ Private well bacteria-failure resampling and revised reporting completed before a real estate closing. Staten Island, NY Full-facility potable water testing for a Staten Island community services organization, revised and reissued report. Carteret, Middlesex County, NJ PWTA source verification established municipal water service for a New Jersey real estate transaction. West Village, Manhattan Large-scale residential lead testing with 58 initial sample points and a 26-sample follow-up. Lower Manhattan Transit Hub Pre-opening potable-water clearance for a national restaurant at a Lower Manhattan transit hub. Flatiron, Manhattan Potable water commissioning for a Sixth Avenue commercial property. Chester, Morris County, NJ PWTA well panel completed for a real estate transaction. Piscataway, Middlesex County, NJ PWTA well panel completed for a real estate transaction. Staten Island, NY Two-point E. coli and coliform testing documented potable-water compliance for a contractor. Upper East Side, Manhattan Multi-unit potable water testing across four residential apartments held by a foreign consulate. Bernardsville, Somerset County, NJ Expanded PWTA home-sale panel across raw and treated water; every primary standard passed. Bethpage, Long Island, NY Multi-point potability testing for a food-service facility, with every sample passing. Corona, Queens Four lead-testing campaigns for an educational center, with complete regulatory documentation. Liberty Township, Warren County, NJ Private well bacteria-failure resampling and revised reporting completed before closing. 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. Saddle River, Bergen County, NJ Private well panel expanded to include gross alpha radiological and PFAS analysis, treated and untreated points. Bay Ridge, Brooklyn Residential potable water analysis for a Brooklyn property. Peapack, Somerset County, NJ New Jersey PWTA-compliant private well panel completed for a real estate transaction. Upper East Side, Manhattan Three-point residential metals and corrosivity panel confirmed all results within applicable standards. Tribeca, Manhattan Tribeca high-rise baseline covered hot and cold water, with no PFAS or microplastics detected. Staten Island, NY Food service facility potable water testing, repeat engagement across three sampling events. Governors Island, NY Six-event quarterly potable-water monitoring program for a Governors Island facility. Governors Island, NY Recurring facility potable water monitoring, prior-year sampling event. Staten Island, NY Multi-family building lead and potability testing with revised final report. Flatiron District, Manhattan Three-point E. coli and coliform testing across a commercial building returned clean results. East Hampton, NY Full-spectrum residential baseline across three points; every parameter passed applicable standards. Norwalk, Fairfield County, CT Comprehensive 83-parameter potability and microplastics baseline for whole-house filtration planning. Sunset Park, Brooklyn Twenty-sample academy lead assessment across two events, each with electronic data deliverables. Clifton, Passaic County, NJ Annual steam-sterilizer feedwater testing for a surgery center under ANSI/AAMI ST108. Fort Totten, Queens, NY Metals, chemistry and bacteria testing across two U.S. Army Reserve building systems. South Plainfield, Middlesex County, NJ DI water testing confirmed no bacteria and conductivity within ASTM Type II range. Newark, NJ Charter school lead testing with EDD and Appendix D regulatory reporting. Bushwick / East Williamsburg, Brooklyn Six-fixture federal office screening for Legionella, bacteria, lead and copper; all samples passed. Chelsea, Manhattan Three-point E. coli and coliform testing across a commercial building's vertical water supply. East Hampton, Long Island, NY Full private well panel, expanded to include radiological analysis. Inwood, Manhattan Two-phase cooperative apartment testing paired a 30-parameter panel with a targeted bacterial retest. Brewster, Putnam County, NY Eight-point office Legionella screening found elevated L. pneumophila at two matching fixtures. Staten Island, NY Repeat hydrant and water-main clearance testing at two Staten Island construction sites, all clean. Kips Bay, Manhattan Annual 17-point deionized-water purity testing for a global pharmaceutical facility. Upper East Side, Manhattan Legionella panel at a East 70th Street residential property, run alongside the standard potable panel. Upper Manhattan Emergency bacteria testing isolated contamination to an unknown foundation source, not the potable tap. Upper East Side, Manhattan High-rise apartment lead and potability testing. East 76th Street, Manhattan Upper East Side residential engagement including Legionella analysis alongside the standard potable panel. First Avenue, Manhattan Expedited Legionella testing for a Manhattan construction site's compliance timeline. Far Hills, Somerset County, NJ Private well panel completed for a homeowner water quality assessment. 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. East Village, Manhattan Preschool lead and potability assessment in Lower Manhattan, delivered with EDD for regulatory submission. LaGuardia Airport, Terminal B, Queens Three potable-water sampling events at a LaGuardia Airport terminal, with full electronic data deliverables. Greenpoint, Brooklyn Industrial process-water metals testing identified very high nickel in a pre-treatment stream. Highbridge, Bronx Potable water testing for a Bronx community development organization's facility. Bronx, NY Commercial facility water quality testing in the Bronx. Staten Island, NY Annual seafood-facility bacteria testing included a clean resample after ice-machine remediation. Kingsbridge, Bronx Preschool potable water and lead assessment in the North Bronx. Brooklyn Heights, Brooklyn Condominium testing identified iron-reducing bacteria as the likely cause of discolored hot water. Upper West Side, Manhattan K-8 school lead testing found one elevated fixture while clearing the remaining campus outlets. Flatiron, Manhattan Sixteen-parameter metals and minerals panel for a wellness facility's cold-plunge tub. Manhattan Valley (Upper West Side), Manhattan Five-point testing cleared the city main and isolated corrosion and sulfide issues within the property.
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.

NELAP Accredited Analysis · NYS ELAP Certified Results · EPA-Approved Methods

Certified Water Testing Laboratory Analysis.

NELAP accredited water testing and analysis services for homes, private wells, commercial properties, schools, food businesses, property management companies, landlords, and tenants across New York, New Jersey, and Connecticut.

New York

(212) 461-3879

New Jersey

(908) 772-8601

Connecticut

(203) 780-2022

NYS ELAP

Certified Results

NELAP

Accredited Analysis

EPA

Approved Methods

Full COC

Chain of Custody

35+ Yrs

Certified Experts

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

Laboratory Water Testing Services

Certified Laboratory Water Testing

Lead · Bacteria · PFAS · Legionella · Potability · 1,4-Dioxane · Arsenic · Nitrates · VOCs · Radon · Multi-draw diagnostic · Water quality reports · All analytes

Lead Testing & Heavy Metals Analysis

Certified lead testing at the point of use. Lead, copper, arsenic, iron, manganese. On-site sampling with full chain-of-custody. NYS ELAP certified results.

Bacteria Testing & Potability Analysis

Total coliform, E. coli, HPC, and potability analysis at the point of use. Required for food businesses, restaurants, schools, and commercial properties.

Legionella Water Testing

Point-of-use Legionella analysis at showers, faucets, pools, spas, and decorative water features. Certified results with complete documentation.

PFAS & 1,4-Dioxane Analysis

Certified PFAS and 1,4-dioxane screening. PFOA, PFOS, NJ MCL-compliant analysis, NYS 1 ppb MCL comparison. Only certified laboratory analysis detects them.

Private Well Water Testing

Comprehensive well water analysis — bacteria, arsenic, nitrates, radon, iron, manganese, pH, hardness, VOCs, PFAS, 1,4-dioxane. Annual and PWTA pre-purchase panels.

Multi-Draw Diagnostic Analysis

Sequential certified sampling from the same fixture at timed intervals. Identifies contamination source — fixture, branch pipe, or building riser. Diagnostic report included.

Who We Serve

Commercial & institutional water testing clients

Property Management Companies

Ongoing certified water testing programs — lead, potability, Legionella, and annual water quality analysis with compliance documentation for multi-building portfolios.

Co-ops, Condos & Hi-Rise Buildings

Building-wide lead testing, Legionella sampling, and certified water quality analysis for co-op boards, condo associations, and residential towers.

Schools, Daycares & BOCES

Lead testing under NYS 3Ts program. Certified results, compliance reports, and remediation guidance for schools and childcare facilities across NY, NJ, and CT.

Restaurants & Food Businesses

DOH compliance water testing. Certified potability, bacteria, and E. coli analysis accepted by NYC DOH, NJ DEP, and CT DOH health departments.

Private Well Property Owners

Annual well water testing and PWTA-compliant analysis for NJ and CT private well properties. Bacteria, arsenic, nitrates, radon, PFAS, and 1,4-dioxane panels.

Tenants, Renters & Landlords

Individual unit and building-wide water testing. Landlord compliance testing and certified results accepted by regulatory agencies, attorneys, and building management.

Commercial & institutional water testing clients

01

Consultation

Determine appropriate testing panels and sampling locations for your property.

02

Certified On-Site Sampling

EPA-approved on-site sampling with full chain-of-custody documentation.

03

Lab Analysis

NELAP accredited analysis. Results certified by NYS ELAP.

04

Reports Delivered

Certified water quality reports with EPA action level comparisons and findings.

Frequenlty Asked Questions

Results certified by NYS ELAP (New York State Environmental Laboratory Approval Program) and analysis by NELAP (National Environmental Laboratory Accreditation Program) accredited laboratory. EPA-approved analytical methods. Full chain of custody on every sample.

New York (all five boroughs, Westchester, Long Island), New Jersey (Bergen, Essex, Morris, Hudson, Union, Middlesex, and Monmouth counties), and Connecticut (Fairfield, New Haven, and Litchfield counties). NY (212) 461-3879 · NJ (908) 772-8601 · CT (203) 780-2022.

Yes. Accepted by NYC DOH, NYS DOH, NJ DEP, CT DEEP, EPA programs, local health departments, building attorneys, real estate professionals, and mortgage lenders.
 
Residential homes, co-ops, condominiums, pre-war buildings, brownstones, multi-family buildings, private well properties, commercial and office buildings, hotels, restaurants, food businesses, schools, daycares, property management portfolios, and more.
 

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Water testing laboratory resources

Iron Findings Can Mean More Than Staining in a Sink

Iron Findings Can Mean More Than Staining in a Sink

When you think of iron in your water, your mind likely jumps to the visual nuisances: the persistent orange-brown rings around your faucets, the discolored…

A Home Buyer’s Guide to Water Testing Questions

A Home Buyer’s Guide to Water Testing Questions

Buying a home is often the largest financial investment of your life. During the due diligence phase, you will likely schedule a general home inspection…

How Property Managers Benefit From Better Water Records

How Property Managers Benefit From Better Water Records

For property managers, the “invisible” aspects of building operations are often the ones that create the most visible headaches. You are expected to keep the…

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  • New York City & Five Boroughs
  • Westchester & Long Island
  • New Jersey Counties
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  • All Property Types
  • Commercial & Residential
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Need Water Testing? We’re Here 24/7

Olympian Water Testing helps you know exactly what is in your water, so you are never left guessing about what you drink and use every day. We are a local water testing company serving residential and commercial properties across NYC, including Brooklyn, Queens, Manhattan, the Bronx, and Staten Island. Whether you own a home, run a business, or manage a building, our certified and licensed experts make water quality and water analysis services simple and stress-free. And if you are not sure where to start, a quick chat with our consultant is usually all it takes to find the right tests for your property, plan your sample collection, and stay on top of any standards that apply, which is exactly what homeowners and property management companies count on us for.

When it comes to results, we focus on the tests that matter most, including lead testing, potability testing, and bacteria testing, plus checks for e coli, total coliform, and turbidity. Need something more specialized? We also handle legionella testing, PFAS testing, and microplastics testing for properties of every size. Every sample is treated with lab-quality care and laboratory-grade analytical standards, so your results come back clear, accurate, and fully documented, whether you simply want peace of mind or need them for compliance. From a single test to a full panel, our certified experts take care of collection, evaluation, and detailed reporting, giving NYC property owners honest answers and friendly service they can rely on for years to come.

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