Harlem, GA tap water
Supplied mostly by Columbia County Water Utility, 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)
0.6–1.1 ppm (Low)
Typical 0.6 ppm
Low, so water changes lower your tank's nitrate well.
From Columbia County Water Utility's 2024 water quality report; Columbia County, which supplies Grovetown.
Copper at home taps (first draw)
Up to 0.57 ppm (Worth knowing)
The 90th percentile of first-draw samples from homes: water that sat in household pipes for at least six hours.
Shrimp and snails are sensitive to copper. Water that sits in household pipes picks up the most; it drops once the tap has run for a minute.
Published by your utility: Columbia County Water Utility's 2024 water quality report.
Chlorine or chloramine at the tap
0–2.2 ppm
Typical 1 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
Published by your utility: Columbia County Water Utility's 2024 water quality report.
Water chemistry
General hardness
1–40 ppm
Typical 21 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From Columbia County Water Utility's 2024 water quality report; Columbia County, which supplies Grovetown.
Carbonate hardness (alkalinity)
20–50 ppm
Typical 35 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From Columbia County Water Utility's 2024 water quality report; Columbia County, which supplies Grovetown.
pH
6.5–8.5
Typical 7.5
Most community fish do well here. Stable water matters more than the exact number.
From Columbia County Water Utility's 2024 water quality report; Columbia County, which supplies Grovetown.
Who supplies Harlem, GA
- 2024 water quality report
Columbia County Water Utility
Serves 53% of residents · Lake or river water · Chlorine
Grovetown
Serves 37% of residents · Buys water from Columbia County · 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.