Willow Oak, FL tap water
Part of Willow Oak is supplied by Southwest/Polk County Utility, plus 2 other utilities. Here's what its water means for your fish.
Disinfectant
Chlorine
Utility water here 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 (2012–2019).
Nitrate (NO₃)
Up to 21 ppm (Low)
Typical 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 estimate69–1991 ppm
Typical 153 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your county (2000–2019).
Carbonate hardness (alkalinity)
Area estimate64–267 ppm
Typical 123 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2000–2019).
pH
7.5–8.4
Typical 7.9
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2018).
Total dissolved solids
Area estimate70–1490 ppm
Typical 171 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 (2000–2019).
Who supplies Willow Oak, FL
Southwest/Polk County Utility
Serves 27% of residents · Groundwater (wells) · Chlorine
Bailey Place MHP
Serves 12% of residents · Groundwater (wells) · Chlorine
G ; H Mobile Home Park Inc
Serves 9% of residents · Groundwater (wells) · Chlorine
We couldn't fully map which utility serves Willow Oak. These numbers come from the utilities we matched, which serve about 48% of residents.
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.