Shoal & Stem

Greenport, NY tap water

Supplied by Greenport 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

5.4–6.4 ppm (Low)

Typical 5.4 ppm

Water changes can't take your tank's nitrate below this level.

From the utility that supplies yours: Suffolk County Water Authority, which supplies Greenport Water District.

Water chemistry

General hardness

Supplier's figure

186–495 ppm

Typical 259 ppm

Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.

From the utility that supplies yours: Suffolk County Water Authority, which supplies Greenport Water District.

Carbonate hardness (alkalinity)

Supplier's figure

30–54 ppm

Typical 40 ppm

Moderate buffering. pH should stay fairly steady.

From the utility that supplies yours: Suffolk County Water Authority, which supplies Greenport Water District.

pH

Supplier's figure

6.5–7

Typical 6.8

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

From the utility that supplies yours: Suffolk County Water Authority, which supplies Greenport Water District.

Total dissolved solids

Supplier's figure

59–88 ppm

Typical 69 ppm

A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.

From the utility that supplies yours: Suffolk County Water Authority, which supplies Greenport Water District.

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

Who supplies Greenport, NY

  • Greenport Water District

    Serves 91% of residents · Buys water from Suffolk County Water Authority · 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 Greenport Water District

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