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Water testing inside New York City buildings

The city manages the supply. This measures what your building adds to it. Five departure locations across the five boroughs.

Inside NYC plumbing

Municipal water can change after it enters a property and travels through building-specific plumbing.

Point-of-use sampling

Testing evaluates the water at the faucets and outlets that occupants, employees or visitors actually use.

Broad testing capabilities

Lead, bacteria, PFAS, VOCs, metals, Legionella and other parameters can be selected according to the property and concern.

New York

(212) 461-3879

New Jersey

(908) 772-8601

Connecticut

(203) 780-2022

NELAP accredited laboratory analysis

Certified Master Inspector

Water Quality Association

AIHA member

Serving NY, NJ and CT since 1991

Questions clients commonly ask

Ask about your building

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Olympian Water Testing | Sponsored Listing on Inside NYC Water
Brooklyn
Sunnyside
Upper West Side
Staten Island
Midtown
Brooklyn
665 88th Street
Brooklyn, NY 11228
(718) 766-7043
Sunnyside
47-1 Greenpoint Avenue
Sunnyside, NY 11104
(718) 819-1230
Upper West Side
461 Columbus Avenue
New York, NY 10024
(212) 461-3879
Staten Island
1365 North Railroad Avenue
Staten Island, NY 10306
(212) 461-3879
Midtown
350 5th Avenue
New York, NY 10118
(646) 328-2931
35Years in operation
5New York City locations
3States served
24/7Water-testing support
BusinessOlympian Water Testing LLC
CategoryWater Testing Service, independent laboratory analysis
Established1991, 35 years in operation
Service areaNew York, New Jersey and Connecticut
LocationsFive departure locations across New York City
Telephone(212) 461-3879 New York  •  (908) 772-8601 New Jersey  •  (203) 780-2022 Connecticut
Websiteolympianwatertesting.com
PanelsLead, copper, bacteria, PFAS, chemicals and full potability
AnalysisNELAP accredited laboratory analysis, accredited results provided
New York City building testing

Water Testing Inside New York City Buildings

New York City draws from upstate watersheds and delivers water that is notably soft and low in dissolved minerals. That characteristic is widely regarded as a virtue for taste. It also means the protective scale that forms on the inside of plumbing is thinner than in harder water regions, which places more weight on the condition of an individual building's pipework.

Olympian Water Testing provides professional water testing inside New York City buildings for boards, managing agents, owners, residents, schools, childcare programs and commercial occupiers.

Where the City's Responsibility Ends

The utility manages source water, treatment, corrosion control and the distribution system. It does not manage the age of a riser, the composition of a fitting, or how long water has been standing in a lightly occupied apartment.

Distribution within a building adds a further layer. In much of the older housing stock, upper floors are supplied by gravity from a roof tank while lower floors draw pressure directly from the main, producing different residence times within one address.

Lead bearing components remain in current use throughout the city's building stock, including brass faucet bodies, angle stops, mixing valves, ball and gate valves and pipe fittings.

How a City Building Is Assessed

Olympian Water Testing works from five departure locations across the five boroughs, which matters because analytical holding times commence at collection and a requested stagnation period must be observed on the scheduled day.

A walkthrough establishes the actual configuration, sampling points are selected to separate unit, riser and building level conditions, and access is coordinated across units in advance.

Samples are handled under documented chain of custody with holding times observed for each analysis, and field conditions are recorded at every point.

Understanding Your Building Report

Our reporting identifies each sampling point and its position in the building, the analytical method, the reporting limit and the measured value.

Where roof tank supplied floors and directly supplied floors are both in scope, findings are reported so the distinction remains visible.

Panels commonly cover lead and copper, bacteriological indicators, and further parameters where the building history supports them.

Coverage Across the Five Boroughs

Olympian Water Testing has operated in New York City since 1991, serving Manhattan, Brooklyn, Queens, the Bronx and Staten Island, and extending into New Jersey and Connecticut.

Every engagement carries NELAP accredited laboratory analysis, and accredited results are provided.

Water-testing support is available 24/7, and parameter selection is handled by a specialist before a visit is arranged.

Where responsibility changes hands

SegmentManaged byCovered by public reporting
Watershed and treatmentThe utilityYes
Street mains and distributionThe utilityYes
Service connection to the buildingShared, varies by propertyPartially
Risers, branches and roof tanksThe propertyNo
Fixtures and supply linesThe property ownerNo

How Olympian works

What Olympian does
  • On site sample collection by our highly trained and skilled laboratory technicians
  • Stagnation instructions provided in advance when required by the selected test
  • Chain of custody maintained from collection through analysis
  • NELAP accredited laboratory analysis
  • Our reporting states methods, reporting limits and measured values
Why clients choose Olympian
  • Thirty five years serving New York, New Jersey and Connecticut
  • Parameter selection determined through consultation with our consultants
  • Five departure locations across New York City
  • Reporting limits stated for every parameter selected
  • Support available 24/7 for testing questions and scheduling

Common questions

Is New York City tap water the same at every building?
The public supply is shared, but water can be altered by the service line, building plumbing, storage systems and fixtures before it reaches an individual tap.
What can an NYC apartment water test find that city data cannot?
It can measure selected contaminants at the actual outlet in a specific apartment or building, including conditions associated with private plumbing.
Can I test water in a co-op or condo building?
Yes. Testing can be limited to an individual unit or designed across representative locations in a larger building, depending on the question being investigated.
What should I test after plumbing work in an NYC building?
The scope depends on the work and symptoms. Lead, copper, bacteria, turbidity and other metals may be relevant when plumbing has been disturbed or replaced.

Request New York City Water Testing

Olympian provides professional on-site sampling and accredited laboratory analysis for residential, commercial and institutional properties.

Request New York City Water Testing