Brooklyn Water Hardness & Quality Report (2026)
Water Hardness
10.4 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
373.1 mg/L
Est. Daily Cost
$0.48
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 Brooklyn, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Brooklyn | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.5 yrs | 15 yrs | -43% |
Regional Water Comparison
How Brooklyn compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Brooklyn, Ohio | 178.5 mg/L | 7 ppt | 🟠 Hard | river |
| Clark-Fulton, Ohio | 251 mg/L | 9.9 ppt | 🔴 Very Hard | river |
| Parma, Ohio | 164 mg/L | 6.4 ppt | 🟠 Hard | river |
| Detroit-Shoreway, Ohio | 250.5 mg/L | 9.9 ppt | 🔴 Very Hard | river |
| Parma Heights, Ohio | 164.5 mg/L | 6.4 ppt | 🟠 Hard | river |
National Benchmark
How Brooklyn compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Brooklyn | 178.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Brooklyn's Water Unique?
Local geology and source profile
Brooklyn, Ohio, in Cuyahoga County — a Cuyahoga County city adjacent to Parma and Cleveland in the south Cleveland suburbs — receives its water from Cleveland Water, drawing from Lake Erie through the north-central Ohio distribution.
The hard 178.5 mg/L hardness and TDS of 373.1 mg/L reflect the Cuyahoga County Lake Erie supply's hard dolomitic character — the Devonian Olentangy Shale and Silurian Niagaran Dolomite are calcareous-dolomitic formations in the north-central Ohio Lake Plain, and Lake Erie concentrates dissolved mineral content from its extensive limestone and dolomite drainage (compare Parma OH: 175/365 in Cuyahoga County comparable; Cleveland OH: 181/381 in Cuyahoga County comparable; Brooklyn consistent hard from the same Cuyahoga County Lake Erie Silurian dolomitic supply). The Lake Erie supply — Devonian Olentangy Shale (calcareous — primary hardness contributor), Silurian Niagaran Dolomite (highly dolomitic — secondary contributor), and Quaternary Lake Erie alluvium (calcareous — TDS contributor).
At 178.5 mg/L with TDS 373, Brooklyn's water is hard — scale builds in appliances. Quarterly descaling is appropriate. The PFAS level of 7.0 ppt warrants a certified drinking water filter. Review Cleveland Water's annual water quality report.
Geology & Source: Brooklyn in Cuyahoga County draws from the Cleveland Water on the Lake Erie supply (Cuyahoga County, north-central Ohio) — the Lake Erie supply at Cuyahoga County draws from Devonian Olentangy Shale (calcareous) and Silurian Niagaran Dolomite (highly dolomitic) — Ohio Cuyahoga County Lake Erie Silurian dolomitic supply produces hard water at 178.5 mg/L with TDS 373.1 mg/L.