Bloomington Water Hardness & Quality Report (2026)
Water Hardness
8.3 grains per gallon
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
396.9 mg/L
Est. Daily Cost
$0.38
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 Bloomington, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Bloomington | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.9 yrs | 8.5 yrs | -42% |
| Washing Machine | 8.3 yrs | 12 yrs | -31% |
| Water Heater | 9.9 yrs | 15 yrs | -34% |
Regional Water Comparison
How Bloomington compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Bloomington, California | 142 mg/L | 6 ppt | 🟠 Hard | mixed |
| Rialto, California | 48.5 mg/L | 3.3 ppt | 🟢 Soft | mixed |
| Fontana, California | 123 mg/L | 5.4 ppt | 🟠 Hard | mixed |
| Rubidoux, California | 171 mg/L | 6.8 ppt | 🟠 Hard | mixed |
| Colton, California | 82 mg/L | 4.2 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Bloomington compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bloomington | 142 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Bloomington's Water Unique?
Local geology and source profile
Bloomington, California, in San Bernardino County in the Inland Empire south of Rialto and northwest of Fontana — an unincorporated community with significant warehouse, logistics, and light industrial presence in the western San Bernardino Valley — receives its municipal water from the San Bernardino County Service Area or Inland Empire Utilities Agency (IEUA), drawing from the Chino Basin groundwater and State Water Project (SWP) imported supply blended through the regional distribution network. IEUA manages the Chino Basin aquifer recharge program, spreading SWP water in spreading grounds along the Santa Ana River corridor to replenish the local aquifer.
The moderately hard 142 mg/L hardness and TDS of 396.9 mg/L reflect the Chino Basin groundwater's characteristic mineral content. The Chino Basin underlying the western San Bernardino Valley contains Quaternary alluvial fan deposits eroded from the granodioritic San Gabriel and San Bernardino Mountains — calcareous-poor granite-derived sands and gravels — mixed with mineral contributions from decades of agricultural and industrial activity in the Inland Empire's intensively developed landscape. The SWP import component (~90–120 mg/L) is softer, but the local Chino Basin groundwater introduces higher mineral content at depth, producing the moderately hard blended supply.
At 142 mg/L, Bloomington's water is moderately hard — standard for the western San Bernardino Valley. Scale builds gradually in kettles and appliances over months, the dishwasher benefits from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling of heating appliances is recommended. The PFAS level of 6.0 ppt is moderate for the Inland Empire — the San Bernardino Valley's dense industrial and military presence (March Air Reserve Base, Norton AFB superfund site) contributes to the regional PFAS background.
Geology & Source: Bloomington in San Bernardino County draws from the Chino Basin groundwater and Inland Empire Utilities Agency (IEUA) supply blending State Water Project import with San Bernardino Basin alluvial aquifer water — valley floor alluvial sediments from granitic San Gabriel Mountain drainage contact agricultural and urban mineral inputs — mixed inland valley supply produces moderately hard water at 142 mg/L.