Shoal & Stem

Oakes, ND tap water

Supplied mostly by Southeast Wud (Central-Lisbon), 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

Nitrite (NO₂)

Not detected (Low)

Not detected in testing, so any nitrite in your tank comes from the tank itself.

From EPA monitoring data (2014–2017).

Nitrate (NO₃)

3.5 ppm (Low)

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

From EPA monitoring data (2014–2017).

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)

Supplier's figure

80–118 ppm

Typical 84 ppm

Moderate buffering. pH should stay fairly steady.

From the utility that supplies yours: City of Lisbon, which supplies Southeast Wud (Central-Lisbon); EPA monitoring data (2015–2019).

pH

Supplier's figure

8–9.5

Typical 9

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

From the utility that supplies yours: City of Lisbon, which supplies Southeast Wud (Central-Lisbon); EPA monitoring data (2015–2019).

  • Southeast Wud (Central-Lisbon) adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
  • Southeast Wud (Central-Lisbon) and City of Oakes soften their water at the plant, so it may be softer than the local groundwater.

Who supplies Oakes, ND

  • Southeast Wud (Central-Lisbon)

    Serves 50% of residents · Buys water from City of Lisbon · Chloramine

  • City of Oakes

    Serves 45% 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.

Also supplied by Southeast Wud (Central-Lisbon)

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