Shoal & Stem

Gardner, KS tap water

Supplied mostly by City of Gardner, plus 1 other utility. Here's what the water means for your fish.

Disinfectant

Chlorine or chloramine

Utilities here use chlorine or chloramine, depending on which one serves your address. Chlorine slowly gases off from standing water; chloramine doesn't.

Safety for fish and shrimp

Nitrate (NO₃)

1.5–6.2 ppm (Low)

Typical 1.9 ppm

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

From EPA monitoring data; Water District 1 of Johnson Co and Miami Co RWD 2 and City of Olathe, which supplies Johnson Co RWD 7 (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)

54–111 ppm

Typical 111 ppm

Strong buffering. pH stays steady and hard to lower without RO water.

From EPA monitoring data; Water District 1 of Johnson Co and Miami Co RWD 2 and City of Olathe, which supplies Johnson Co RWD 7 (2012–2019).

pH

7.7–9.3

Typical 7.8

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

From EPA monitoring data; Water District 1 of Johnson Co and Miami Co RWD 2 and City of Olathe, which supplies Johnson Co RWD 7 (2012–2019).

Who supplies Gardner, KS

  • City of Gardner

    Serves 62% of residents · Lake or river water · Chlorine

  • Johnson Co RWD 7

    Serves 32% of residents · Buys water from New Century Air Center · Chloramine

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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