Warren Water Hardness & Quality Report (2026)
Water Hardness
7.3 grains per gallon
Source
river
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
211 mg/L
Est. Daily Cost
$0.33
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 Warren, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Warren | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.5 yrs | 8.5 yrs | -35% |
| Washing Machine | 9 yrs | 12 yrs | -25% |
| Water Heater | 10.6 yrs | 15 yrs | -29% |
Regional Water Comparison
How Warren compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Warren, Ohio | 125 mg/L | 4.8 ppt | 🟠 Hard | river |
| Niles, Ohio | 225 mg/L | 8.9 ppt | 🔴 Very Hard | river |
| Austintown, Ohio | 209 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Youngstown, Ohio | 230.5 mg/L | 9.1 ppt | 🔴 Very Hard | river |
| Boardman, Ohio | 143.5 mg/L | 5.6 ppt | 🟠 Hard | river |
National Benchmark
How Warren compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Warren | 125 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Warren's Water Unique?
Local geology and source profile
Warren, Ohio, the Trumbull County seat — the Mahoning Valley's original major industrial city (Warren preceded Youngstown as the major Mahoning Valley city in the early 19th century), home of Trumbull County's steel and manufacturing heritage, now a diverse Trumbull County community rebuilt from major deindustrialization (the Mahoning Valley steel industry collapse of the 1970s–1980s), and a northeast Ohio community with significant African-American and immigrant heritage — draws its municipal water supply from the Mahoning River via the City of Warren Water Division. Water hardness in Warren measures 125 mg/L — classified as moderately hard.
Warren's moderate hardness reflects the Mahoning River northeast Ohio Appalachian Plateau watershed's calcareous geology. The Mahoning River at Warren–Trumbull County drains through: the Pennsylvanian and Devonian calcareous shale and limestone of the Ohio Appalachian Plateau (the Devonian Berea Sandstone, Ohio Shale — moderately calcareous); the Pennsylvanian Conemaugh and Allegheny Groups (calcareous-moderate); and the Wisconsin Age Erie–Ontario Lobe calcareous till (calcareous glacial deposits from the Erie Basin). The City of Warren's treatment and the calcareous-moderate Appalachian Plateau geology produce the moderate 125 mg/L.
At 125 mg/L, Warren residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended. City of Warren Water Division consistently delivers water meeting all Ohio EPA and federal EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Mahoning River (Warren Water Treatment Plant) via the City of Warren Water Division — the Trumbull County northeast Ohio Mahoning Valley (Pennsylvanian and Devonian calcareous shale and limestone of the Appalachian Plateau and Wisconsin Age calcareous Erie–Ontario Lobe till); moderately hard supply at 125 mg/L in Trumbull County.