Lake Ketchum, WA tap water
Supplied mostly by Wilderness Ridge Community Club, plus 2 other utilities. Here's what the water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
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)
Up to 0.7 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate45–173 ppm
Typical 93 ppm
Moderately soft to medium. Suits most community fish and plants.
Area estimate from nearby wells: USGS well samples in your county (2016).
Carbonate hardness (alkalinity)
Area estimate40–151 ppm
Typical 73 ppm
Moderate buffering. pH should stay fairly steady.
Area estimate from nearby wells: USGS well samples in your county (2005–2016).
pH
Area estimate7.3–8.5
Typical 8.2
Alkaline. Stability matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2001–2016).
Total dissolved solids
Area estimate65–213 ppm
Typical 135 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 (2016).
Who supplies Lake Ketchum, WA
Wilderness Ridge Community Club
Serves 80% of residents · Groundwater (wells) · Disinfectant not listed
City of Stanwood Water Dept
Serves 13% of residents · Groundwater (wells) · Chlorine
Northwest Water
Serves 10% of residents · Groundwater (wells) · Disinfectant not listed
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.