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Water-testing support available 24/7

Brown tap water, identified before anything is installed

Independent sampling across three states from a practice built entirely around measuring accurately.

Brown tap waterTesting can identify iron, manganese and other parameters that may be contributing to visible discoloration.
Target likely contributorsTesting may include iron, manganese, turbidity, sediment-related parameters and other analyses based on the condition observed.
Compare relevant outletsSampling multiple locations can help determine whether the condition is isolated to one fixture or occurs more broadly.
NELAP accredited laboratory analysis Certified Master Inspector Water Quality Association AIHA member Serving NY, NJ and CT since 1991
Questions clients commonly ask
Why did my tap water suddenly turn brown?
Is brown tap water more likely from the street or my building?

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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
35Years in operation
5New York City locations
3States served
24/7Water-testing support
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
Discolored tap water testing

Five explanations for brown tap water and how to tell them apart

CauseHow it usually presentsHow it is distinguished
Street main disturbanceAll taps at once, often several housesTiming against known street work
Building work or a pump changeAll taps in one property onlyProperty history rather than street history
Water heater and anodeHot side only, cold runs clearComparing hot against cold at the same fixture
Fixture or supply lineOne tap only, clears quicklyComparing against a second cold tap
Well iron and manganesePersistent, staining, no external triggerProperty is on a private well

Professional Testing for Brown and Discolored Tap Water

Brown or discolored tap water has a small number of recognized causes, and the distribution and timing of the symptom narrow them considerably before any analysis begins.

Olympian Water Testing conducts discoloration investigations for households, renters, owners, managing agents and boards throughout the tri state region.

The Recognized Causes

Disturbance within the distribution system, including main repairs, hydrant operation and changes in flow direction, returns settled iron and manganese to suspension and commonly affects several adjoining properties at once.

Work within a property, a water heater and its internal components, a single fixture and its supply line, and naturally occurring iron and manganese on a private well each produce a distinguishable pattern.

How the Cause Is Established

Consultation establishes whether every tap is affected or only one, whether hot or cold, when it began, whether it clears with running, and what occurred at the property or in the street beforehand.

Our highly trained and skilled laboratory technicians then perform the sampling event, with parameters selected to confirm or eliminate a specific explanation.

Understanding Our Reporting

Our reporting identifies the sampling points, the conditions and appearance recorded there, the analytical method, the reporting limit and the measured value.

Whether the sample was collected during an active episode or after the water cleared is stated explicitly, since the two describe different conditions.

Independent Assessment Across the Region

Olympian Water Testing has investigated discoloration since 1991, from five departure locations across New York City, with NELAP accredited laboratory analysis.

Enquiries reach Olympian at every hour throughout the year.

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

Why did my tap water suddenly turn brown?
A sudden change can follow water-main work, flow changes, hydrant use, plumbing repairs or movement of sediment and corrosion products within the system.
Is brown tap water more likely from the street or my building?
That depends on whether nearby properties are affected, whether hot and cold water behave differently, and whether the issue occurs at one fixture or throughout the property.
What laboratory tests can help explain brown tap water?
Iron, manganese, turbidity and other metals or physical parameters are often considered, with the final scope based on the appearance, plumbing and history of the problem.
Why does brown tap water come and go?
Intermittent discoloration can be related to changes in flow or periods when sediment settles and is later disturbed. Sampling is most informative when the timing of the condition is understood.

Request Water-Quality Testing

Describe the discoloration, cloudiness or other condition you are seeing and Olympian can help determine what should be tested.

Request Water-Quality Testing