Water softeners and filtration in Commack, NY.

Commack's tap water comes from the Suffolk County Water Authority, which pumps it from wells into the Long Island aquifer system. Commack sits in what the authority calls Distribution Area 11. Its 2025 samples averaged 83.0 mg/L total hardness, about 4.9 grains per gallon, with readings from 32.8 to 167.3 mg/L.

Nitrate in Area 11 averaged 5.81 mg/L across 161 samples in 2025, below the state limit of 10 mg/L. The water authority adds a small amount of chlorine at each pump station and raises the pH, because the groundwater here is naturally acidic.

What Commack homes are dealing with

What people notice changes from street to street here: a chlorine taste at the kitchen tap, scale where the water runs harder, or staining where there is iron. The assessment starts from what your utility publishes about the water at your address.

From there you get one recommendation for your home and one written price, before anything is ordered.

What we install in Commack

• Whole home softener and carbon filtration off your main line, the flagship bundle at $3,299 installed.
• Under sink reverse osmosis on its own faucet, for drinking and cooking water.

Local install

Every Commack job is handled locally, start to finish, by a Long Island company.