Greencastle, PA tap water
Supplied by Greencastle Area Water Auth. Here's what its 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)
Up to 1.63 ppm (High)
Typical 0.81 ppm
Some nitrite shows up in this tap water, which can happen in chloramine systems, and it goes into the tank with each water change.
From EPA monitoring data (2012–2019).
Nitrate (NO₃)
23–29 ppm (High)
Typical 26 ppm
High for tap water. Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Chlorine or chloramine at the tap
0.8–1.6 ppm
Typical 1.1 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
From 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)
228 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data, measured before treatment (2012–2019).
pH
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- Greencastle Area Water Auth adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Greencastle, PA
Greencastle Area Water Auth
Serves all residents · Lake or river water · 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.