Shoal & Stem

Marlboro, NY tap water

Supplied by Marlborough Water District. Here's what its water means for your fish.

Disinfectant

Chlorine

Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.

Safety for fish and shrimp

Nitrate (NO₃)

Supplier's figure

Up to 1.2 ppm (Low)

Typical 0.6 ppm

Low, so water changes lower your tank's nitrate well.

From the utility that supplies yours: Newburgh Consolidated WD, which supplies Marlborough Water District (2012–2019).

Water chemistry

General hardness

Not published yet

We haven't found this number yet. A drop test kit gives you your exact reading.

Carbonate hardness (alkalinity)

Not published yet

We haven't found this number yet. A drop test kit gives you your exact reading.

pH

Supplier's figure

7–7.3

Typical 7.2

Most community fish do well here. Stable water matters more than the exact number.

From the utility that supplies yours: Newburgh Consolidated WD, which supplies Marlborough Water District (2014–2018).

  • Marlborough Water District adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.

Who supplies Marlboro, NY

  • Marlborough Water District

    Serves 55% of residents · Buys water from Newburgh Consolidated WD · Chlorine

Our data comes from public records and is still incomplete. Many utilities don't publish every number, so we're adding more all the time. Your city's range is a starting point: testing your own tap is the only way to know exactly what's in it.

Tap water lookup covers US cities only for now. Want to know why it matters? Read our story on tap water.

Compiled by Shoal & Stem from public records. Free to cite with a link.

Also supplied by Marlborough Water District

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