Pevely, MO tap water
Supplied mostly by Pevely PWS, 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
Nitrate (NO₃)
Supplier's figure1.8–6.2 ppm (Low)
Typical 5.8 ppm
Water changes can't take your tank's nitrate below this level.
From the utility that supplies yours: Missouri American Water – St. Louis St. Charles Counties, which supplies Jefferson Co Cons Pwsd C 1 (2012–2019).
Water chemistry
General hardness
Supplier's figure67–223 ppm
Typical 142 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: Missouri American Water – St. Louis St. Charles Counties, which supplies Jefferson Co Cons Pwsd C 1.
Carbonate hardness (alkalinity)
Supplier's figure129–200 ppm
Typical 165 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From the utility that supplies yours: Missouri American Water – St. Louis St. Charles Counties, which supplies Jefferson Co Cons Pwsd C 1 (2025).
pH
7.2–10.2
Typical 7.5
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data; Missouri American Water – St. Louis St. Charles Counties, which supplies Jefferson Co Cons Pwsd C 1 (2014–2017).
- Jefferson Co Cons Pwsd C 1 adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Pevely, MO
Pevely PWS
Serves 56% of residents · Groundwater (wells) · Chlorine
Jefferson County Pwsd 7
Serves 20% of residents · Groundwater (wells) · Chlorine
Jefferson Co Cons Pwsd C 1
Serves 18% of residents · Buys water from Missouri American Water – St. Louis St. Charles Counties · 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.