Harvest, AL tap water
Supplied mostly by Madison County Water Department, 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2019).
Nitrate (NO₃)
4–18 ppm (Low)
Typical 10 ppm
Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Supplier's figure68–149 ppm
Typical 81 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: Huntsville Utilities Water Dept., which supplies Madison County Water Department (2025).
Carbonate hardness (alkalinity)
52–113 ppm
Typical 64 ppm
Moderate buffering. pH should stay fairly steady.
From EPA monitoring data (2012–2019).
pH
7.6–8
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2019).
Total dissolved solids
Supplier's figure70–117 ppm
Typical 84 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
From the utility that supplies yours: Huntsville Utilities Water Dept., which supplies Madison County Water Department (2025).
- Madison County Water Department and Limestone County Water & Sewer Auth. add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Harvest, AL
Madison County Water Department
Serves 82% of residents · Buys water from Huntsville Utilities Water Dept. · Chlorine
Limestone County Water & Sewer Auth.
Serves 11% 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.