Harlan, IN tap water
Supplied mostly by Grabill Water Works, plus 1 other utility. Here's what the water means for your fish.
Disinfectant
Chloramine
Your water is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees a little ammonia. Some utilities switch to plain chlorine for a few weeks a year.
Safety for fish and shrimp
Nitrate (NO₃)
2 ppm (Low)
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data; Grabill Water Works, which supplies Maysville Region. Water & Sewer District (2012–2017).
Water chemistry
General hardness
Supplier's figure95–175 ppm
Typical 122 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: Fort Wayne - 3 Rivers Filtration Plant, which supplies Grabill Water Works; Fort Wayne - 3 Rivers Filtration Plant, which supplies Maysville Region. Water & Sewer District (2024).
Carbonate hardness (alkalinity)
Supplier's figure0–1 ppm
Typical 1 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From the utility that supplies yours: Fort Wayne - 3 Rivers Filtration Plant, which supplies Grabill Water Works; Fort Wayne - 3 Rivers Filtration Plant, which supplies Maysville Region. Water & Sewer District (2024).
pH
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- Grabill Water Works and Maysville Region. Water & Sewer District add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Grabill Water Works and Maysville Region. Water & Sewer District soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Harlan, IN
Grabill Water Works
Serves 70% of residents · Buys water from Fort Wayne - 3 Rivers Filtration Plant · Chloramine
Maysville Region. Water & Sewer District
Serves 42% of residents · Buys water from Grabill Water Works · Chloramine
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.