Mililani Town, HI tap water
Part of Mililani Town is supplied by Waipio Heights, plus 1 other utility. 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)
1.8–9.3 ppm (Low)
Typical 5.8 ppm
Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate41–169 ppm
Typical 61 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
Area estimate from nearby wells: USGS well samples in your county (2000–2014).
Carbonate hardness (alkalinity)
Area estimate42–85 ppm
Typical 60 ppm
Moderate buffering. pH should stay fairly steady.
Area estimate from nearby wells: USGS well samples in your county (2000–2014).
pH
Area estimate6.8–8
Typical 7.1
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2000–2014).
Total dissolved solids
Area estimate149–432 ppm
Typical 213 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 (2000–2014).
Who supplies Mililani Town, HI
Waipio Heights
Serves 11% of residents · Groundwater (wells) · Chlorine
Mililani
Serves 5% of residents · Groundwater (wells) · Chlorine
We couldn't fully map which utility serves Mililani Town. These numbers come from the utilities we matched, which serve about 17% 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.