Shoal & Stem

Maple Heights-Lake Desire, WA tap water

Supplied mostly by Cedar River Water & Sewer District, 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)

Supplier's figure

Up to 3.1 ppm (Low)

Typical 0.8 ppm

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

From the utility that supplies yours: Seattle Public Utilities and Covington Water District, which supplies Cedar River Water & Sewer District; Seattle Public Utilities, which supplies Soos Creek Water and Sewer District (2012–2019).

Water chemistry

General hardness

Supplier's figure

25 ppm

Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.

From the utility that supplies yours: Seattle Public Utilities, which supplies Cedar River Water & Sewer District; Seattle Public Utilities, which supplies Soos Creek Water and Sewer District.

Carbonate hardness (alkalinity)

Supplier's figure

23 ppm

Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.

From the utility that supplies yours: Seattle Public Utilities, which supplies Cedar River Water & Sewer District; Seattle Public Utilities, which supplies Soos Creek Water and Sewer District.

pH

Supplier's figure

7.5–8.5

Typical 8.3

Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.

From the utility that supplies yours: Seattle Public Utilities, which supplies Cedar River Water & Sewer District; Seattle Public Utilities, which supplies Soos Creek Water and Sewer District.

Total dissolved solids

Supplier's figure

36 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: Seattle Public Utilities, which supplies Cedar River Water & Sewer District; Seattle Public Utilities, which supplies Soos Creek Water and Sewer District.

Who supplies Maple Heights-Lake Desire, WA

  • Cedar River Water & Sewer District

    Serves 82% of residents · Buys water from Seattle Public Utilities · Chlorine

  • Soos Creek Water and Sewer District

    Serves 12% of residents · Buys water from Seattle Public Utilities · Chlorine

    Water quality report

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 Cedar River Water & Sewer District

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