Shoal & Stem

Centralia, MO tap water

Supplied mostly by Centralia PWS, 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)

Area estimate

Up to 6.1 ppm (Low)

Typical 0.2 ppm

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

Area estimate from nearby wells: USGS well samples in your county (2000–2023).

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

7.3–8.5

Typical 8.5

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

From EPA monitoring data (2012–2018).

  • Centralia PWS softens its water at the plant, so it may be softer than the local groundwater.

Who supplies Centralia, MO

  • Centralia PWS

    Serves 76% of residents · Groundwater (wells) · Chlorine

  • Boone County Pwsd 10

    Serves 20% of residents · Groundwater (wells) · 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.

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