Sleepy Hollow, IL tap water
Supplied mostly by Sleepy Hollow, plus 2 other utilities. Here's what the water means for your fish.
Disinfectant
Chlorine or chloramine
Utilities here use chlorine or chloramine, depending on which one serves your address. Chlorine slowly gases off from standing water; chloramine doesn't.
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)
Supplier's figureUp to 5.6 ppm (Low)
Typical 2.8 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Elgin, which supplies Sleepy Hollow; EPA monitoring data (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 figure79–330 ppm
Typical 80 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies yours: Elgin, which supplies Sleepy Hollow; EPA monitoring data (2017–2019).
pH
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- Sleepy Hollow and City of Elgin add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Sleepy Hollow, West Dundee and City of Elgin soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Sleepy Hollow, IL
Sleepy Hollow
Serves 45% of residents · Buys water from Elgin · Chloramine
West Dundee
Serves 39% of residents · Groundwater (wells) · Chlorine
- 2026 water quality report
City of Elgin
Serves 8% of residents · Lake or river water · 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.