Lapwai, ID tap water
Supplied mostly by City of Lapwai, plus 1 other utility. Here's what the water means for your fish.
Disinfectant
Chlorine
Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.
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 (2013–2016).
Nitrate (NO₃)
Up to 10 ppm (Low)
Typical 6.7 ppm
Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate83–191 ppm
Typical 114 ppm
Moderately soft to medium. Suits most community fish and plants.
Area estimate from nearby wells: USGS well samples in your county (2000–2011).
Carbonate hardness (alkalinity)
126 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data (2017).
pH
7.1
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2017).
Total dissolved solids
Area estimate71–170 ppm
Typical 104 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Area estimate from nearby wells: USGS well samples in your county (2000–2011).
Who supplies Lapwai, ID
City of Lapwai
Serves 71% of residents · Groundwater (wells) · Chlorine
Bia North Idaho
Serves 34% of residents · Groundwater (wells) · Chlorine
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.