Shoal & Stem

Kings Park, NY tap water

Supplied mostly by Suffolk County Water Authority, plus 1 other utility. Here's what the 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)

5.4–6.4 ppm (Low)

Typical 5.4 ppm

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

From Suffolk County Water Authority's water quality report; Suffolk County Water Authority, which supplies Smithtown Water District.

Copper at home taps (first draw)

0.5–1 ppm (High)

The 90th percentile of first-draw samples from homes: water that sat in household pipes for at least six hours.

Shrimp and snails are sensitive to copper. Water that sits in household pipes picks up the most; it drops once the tap has run for a minute.

Published by your utility: Suffolk County Water Authority's water quality report.

Water chemistry

General hardness

186–495 ppm

Typical 259 ppm

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

From Suffolk County Water Authority's water quality report; Suffolk County Water Authority, which supplies Smithtown Water District.

Carbonate hardness (alkalinity)

30–54 ppm

Typical 40 ppm

Moderate buffering. pH should stay fairly steady.

From Suffolk County Water Authority's water quality report; Suffolk County Water Authority, which supplies Smithtown Water District.

pH

6.5–7

Typical 6.8

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

From Suffolk County Water Authority's water quality report; Suffolk County Water Authority, which supplies Smithtown Water District.

Total dissolved solids

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 Suffolk County Water Authority's water quality report; Suffolk County Water Authority, which supplies Smithtown Water District.

  • Suffolk County Water Authority and Smithtown Water District add phosphate to protect pipes. It can feed algae in tanks without much plant growth.

Who supplies Kings Park, NY

  • Suffolk County Water Authority

    Serves 64% of residents · Groundwater (wells) · Chlorine

    Water quality report
  • Smithtown Water District

    Serves 39% 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 Suffolk County Water Authority

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