Hattiesburg, MS tap water
Supplied mostly by City of Petal, 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 estimate0.1–15 ppm (Low)
Typical 2.5 ppm
Low, so water changes lower your tank's nitrate well.
Area estimate from nearby wells: USGS well samples in your state (2002–2022).
Water chemistry
General hardness
Area estimate4–601 ppm
Typical 67 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
Area estimate from nearby wells: USGS well samples in your state (2001–2022).
Carbonate hardness (alkalinity)
Area estimate18–445 ppm
Typical 216 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your state (2001–2022).
pH
Area estimate5.8–8.8
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your state (2000–2022).
Total dissolved solids
Area estimate61–495 ppm
Typical 145 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Area estimate from nearby wells: USGS well samples in your state (2000–2022).
- City of Petal and Arnold Line Water Association add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Hattiesburg, MS
City of Petal
Serves 67% of residents · Groundwater (wells) · Chlorine
Arnold Line Water Association
Serves 6% 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.