Farmingville Water Hardness & Quality Report (2026)
Water Hardness
5.9 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
190.2 mg/L
Est. Daily Cost
$0.27
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Farmingville, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Farmingville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.3 yrs | 8.5 yrs | -26% |
| Washing Machine | 9.9 yrs | 12 yrs | -17% |
| Water Heater | 11.6 yrs | 15 yrs | -23% |
Regional Water Comparison
How Farmingville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Farmingville, New York | 101 mg/L | 4.9 ppt | 🟡 Moderately Hard | reservoir |
| Holtsville, New York | 174.5 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
| Medford, New York | 68 mg/L | 3.3 ppt | 🟡 Moderately Hard | reservoir |
| Selden, New York | 102 mg/L | 4.9 ppt | 🟡 Moderately Hard | reservoir |
| Coram, New York | 71.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Farmingville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Farmingville | 101 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Farmingville's Water Unique?
Local geology and source profile
Farmingville, New York, in Suffolk County — an unincorporated Suffolk County community adjacent to Coram and Selden in central Suffolk County, Long Island — receives its water from the Suffolk County Water Authority (SCWA), drawing from the Long Island Aquifer (Magothy-Ronkonkoma aquifer units, Suffolk County) through the central Long Island distribution system.
The moderately hard 101 mg/L hardness and TDS of 190.2 mg/L reflect the central Suffolk Long Island Aquifer's moderate calcareous character — consistent with other central Long Island SCWA communities (Coram: ~100 mg/L; Selden: ~103 mg/L). The Long Island Aquifer (Ronkonkoma aquifer) at central Suffolk is developed in Pleistocene Ronkonkoma outwash (slightly calcareous quartz sand with minor carbonate), Cretaceous Magothy Formation (calcareous — primary hardness contributor at central Suffolk), and Cretaceous Lloyd Sand Member (calcareous). The Cretaceous Magothy calcareous input produces the moderately hard central Long Island supply.
At 101 mg/L, Farmingville's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 4.9 ppt warrants a certified drinking water filter — the Suffolk County central Long Island industrial corridor, the Long Island PFAS legacy from historic aviation facilities (Republic Airport — Bethpage PFAS), and the Grumman-Bethpage PFAS plume (the largest Long Island PFAS source) contribute to Farmingville's readings.
Geology & Source: Farmingville in Suffolk County draws from the Suffolk County Water Authority on the Long Island Aquifer (Suffolk County, central Long Island) — the Long Island Aquifer at central Suffolk is developed in Pleistocene Ronkonkoma Aquifer sand (slightly calcareous) — New York Suffolk County Long Island Pleistocene aquifer produces moderately hard water at 101 mg/L with TDS 190.2 mg/L in this Suffolk County New York community.