Herrin, IL tap water
Supplied by Herrin. Here's what its 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)
Supplier's figureNot detected (Low)
Not detected in testing, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Rend Lake Inter-City Water System, which supplies Herrin (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)
Supplier's figure40–45 ppm
Typical 43 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies yours: Rend Lake Inter-City Water System, which supplies Herrin (2017–2019).
pH
Supplier's figure9–9.2
Typical 9.1
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From the utility that supplies yours: Rend Lake Inter-City Water System, which supplies Herrin (2018).
- Herrin softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Herrin, IL
Herrin
Serves all residents · Buys water from Rend Lake Inter-City Water System · 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.
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.