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Laboratory water testing with the numbers explained

Every analyte reported with its method and reporting limit, including those below detection, and results reported in full.

Facts from the faucet

Laboratory testing can answer questions that taste, odor, color and assumptions cannot.

Test for the concern you actually have

Lead, bacteria, PFAS, VOCs, metals and other contaminants require specific laboratory analysis rather than a generic 'water test.'

Professional sampling & analysis

Olympian provides on-site collection with accredited environmental laboratory analysis for the parameters selected.

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

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Olympian Water Testing | Sponsored Listing on TapFacts.com
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
Website olympianwatertesting.com
PanelsLead, copper, bacteria, PFAS, chemicals and full potability
AnalysisNELAP accredited laboratory analysis, accredited results provided
Locations

Five departure locations

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
Laboratory water testing

Most confusion about water results is confusion about units and thresholds

TermWhat it meansCommon mistake
Parts per millionOne unit in a million, often mg/LCompared directly against a ppb figure
Parts per billionOne unit in a billion, often ug/LAssumed to be the same scale as ppm
Detection limitLowest level the method can registerTreated as the level it can measure accurately
Reporting limitLowest level the method can quantify dependablyLeft off the report entirely
Enforceable limitA legal threshold at a defined compliance pointApplied to a tap inside a private building
Advisory valuePublished guidance without enforcementQuoted as though it were a legal limit

Professional Water Analysis and Laboratory Reporting

A water analysis report contains terms that appear interchangeable and are not. Units, detection limits, reporting limits and reference categories each carry a specific meaning, and confusing them changes how a result is understood.

Olympian Water Testing provides professional water testing and reporting for homeowners, property buyers, boards, managing agents and institutional clients throughout New York, New Jersey and Connecticut.

Units and Limits

Parts per million and parts per billion differ by a factor of a thousand, and quoting one against the other is among the most common errors in this subject. Our reporting states units throughout.

A reporting limit states the lowest concentration a method can dependably quantify. It is what gives meaning to any parameter reported as not detected, and it appears against every parameter selected.

Reference Frameworks

Enforceable limits, non enforceable health based goals and advisory guidance are frequently quoted interchangeably despite carrying materially different weight.

Our reporting names the reference each value is set against and identifies its category, so the client and anyone reviewing the document are working from the same understanding.

How the Sampling Event Is Conducted

Our consultants determine parameter selection with the client in an in depth discussion, frequently conducted in writing.

Our sampling technicians perform the site visit, documenting the conditions at each point, with holding times observed for every parameter selected.

Reporting Prepared for Review

Our reporting is prepared for review by boards, engineers, managing agents, lenders, counsel and physicians, each of whom approaches the document differently.

Olympian Water Testing has operated since 1991 with NELAP accredited laboratory analysis, and a specimen report is available on request prior to engagement.

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

What are the most useful facts to know before testing tap water?
Know whether the source is municipal or private well, which outlets are of concern, the age and history of the plumbing, and whether there have been recent changes, repairs or environmental issues.
What does “non-detect” mean on a water test?
It means the laboratory did not detect that analyte above the reporting limit for the method and sample. It does not mean the absolute concentration is proven to be zero.
Why are some water results reported in ppb and others in ppt?
Units reflect the concentration range relevant to the analyte and method. Metals are often reported in parts per billion, while PFAS commonly require parts-per-trillion sensitivity.
Can a water result be different a month later?
Yes. Plumbing use, source conditions, repairs, treatment and environmental factors can change, so a laboratory result should be understood as the condition of the sampled water at that time.

Request Professional Water Testing

Tell Olympian what you want to understand about the property or water source, and the testing can be tailored to your specific questions and concerns.

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