Four Oaks, NC tap water
Supplied mostly by Town of Four Oaks, 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)
Supplier's figureNot detected (Low)
Not detected in testing, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Johnston Co-West, which supplies Town of Four Oaks; EPA monitoring data (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)
Supplier's figure33 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From the utility that supplies yours: Johnston Co-West, which supplies Town of Four Oaks, measured before treatment; EPA monitoring data, measured before treatment (2012–2019).
pH
Supplier's figure6.6–7.5
Typical 6.6
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Johnston Co-West, which supplies Town of Four Oaks; EPA monitoring data (2012–2019).
- Town of Four Oaks and Johnston Co-East add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Four Oaks, NC
Town of Four Oaks
Serves 73% of residents · Buys water from Johnston Co-West · Chloramine
Johnston Co-East
Serves 6% of residents · Lake or river water · 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.