Celina Water Hardness & Quality Report (2026)
Water Hardness
14.6 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
654.5 mg/L
Est. Daily Cost
$0.67
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 Celina, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In Celina | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 4.4 yrs | 12 yrs | -63% |
| Water Heater | 5.6 yrs | 15 yrs | -63% |
Regional Water Comparison
How Celina compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Celina, Ohio | 249.5 mg/L | 9.8 ppt | 🔴 Very Hard | river |
| Van Wert, Ohio | 236 mg/L | 9.3 ppt | 🔴 Very Hard | river |
| Greenville, Ohio | 203.5 mg/L | 8 ppt | 🔴 Very Hard | river |
| Sidney, Ohio | 210 mg/L | 8.2 ppt | 🔴 Very Hard | river |
| Lima, Ohio | 149.5 mg/L | 5.8 ppt | 🟠 Hard | river |
National Benchmark
How Celina compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Celina | 249.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Celina's Water Unique?
Local geology and source profile
Celina, Ohio, in Mercer County — the Mercer County seat adjacent to St. Marys and Minster on Grand Lake St. Marys in northwest Ohio — receives its water from the City of Celina Water Department, drawing from Grand Lake St. Marys through the northwest Ohio distribution.
The very hard 249.5 mg/L hardness and high TDS of 654.5 mg/L reflect the Mercer County supply's very hard northwest Ohio limestone-evaporitic character — the Silurian Salina Formation and Devonian Columbus Limestone are evaporitic-calcareous formations in the northwest Ohio limestone plain, and Grand Lake St. Marys concentrates dissolved mineral content from its extensive Silurian dolomite-evaporite drainage (compare St. Marys OH: 245/644 in Auglaize County comparable; Minster OH: 253/665 in Auglaize County comparable; Celina consistent very hard from the same Mercer County Grand Lake St. Marys Silurian evaporitic supply). The Grand Lake St. Marys — Silurian Salina Formation (evaporitic calcareous — primary hardness contributor), Devonian Columbus Limestone (highly calcareous — secondary contributor), and Quaternary northwest Ohio till plain (calcareous — TDS contributor).
At 249.5 mg/L with TDS 655, Celina's water is very hard — a water softener is strongly recommended to protect plumbing and appliances. The PFAS level of 9.8 ppt is very elevated — a certified filter with PFAS removal is strongly recommended. Review the City of Celina's annual water quality report.
Geology & Source: Celina in Mercer County draws from the Celina Water on the Grand Lake St. Marys (Mercer County, northwest Ohio) — the northwest Ohio limestone plateau at Mercer County draws from Silurian Salina Formation (evaporitic calcareous) and Devonian Columbus Limestone (highly calcareous) — Ohio Mercer County Grand Lake St. Marys Silurian evaporitic supply produces very hard water at 249.5 mg/L with TDS 654.5 mg/L.