Larchwood, IA tap water
Supplied mostly by Larchwood Water Supply, 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2016–2019).
Nitrate (NO₃)
Supplier's figureUp to 11 ppm (Low)
Typical 5.4 ppm
Water changes can't take your tank's nitrate below this level.
From the utility that supplies yours: Lyon-Sioux Rws-Big Sioux, which supplies Larchwood Water Supply; 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)
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
pH
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- Larchwood Water Supply and Lyon-Sioux Rws-Big Sioux add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Larchwood Water Supply and Lyon-Sioux Rws-Big Sioux soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Larchwood, IA
Larchwood Water Supply
Serves 54% of residents · Buys water from Lyon-Sioux Rws-Big Sioux · Chloramine
Lyon-Sioux Rws-Big Sioux
Serves 24% of residents · Groundwater (wells) · 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.