Marion, SC tap water
Supplied mostly by Gsw&sa (SC2620004), 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 (2012–2014).
Nitrate (NO₃)
Up to 2.4 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From 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)
25 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From EPA monitoring data, measured before treatment (2012–2019).
pH
7.4–8
Typical 7.8
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2019).
- Gsw&sa (SC2620004) and Gsw&sa-Marion City of (SC3310001) add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Marion, SC
Gsw&sa (SC2620004)
Serves 52% of residents · Lake or river water · Chloramine
Gsw&sa-Marion City of (SC3310001)
Serves 52% 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.