Baldwin Park Water Hardness & Quality Report (2026)
Water Hardness
4.7 grains per gallon
Source
mixed
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
187.8 mg/L
Est. Daily Cost
$0.21
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 Baldwin Park, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Baldwin Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7 yrs | 8.5 yrs | -18% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 12.4 yrs | 15 yrs | -17% |
Regional Water Comparison
How Baldwin Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Baldwin Park, California | 80 mg/L | 4.2 ppt | 🟡 Moderately Hard | mixed |
| West Covina, California | 48 mg/L | 3.3 ppt | 🟢 Soft | mixed |
| West Puente Valley, California | 64.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
| Vincent, California | 167.5 mg/L | 6.8 ppt | 🟠 Hard | mixed |
| Valinda, California | 46.5 mg/L | 3.2 ppt | 🟢 Soft | mixed |
National Benchmark
How Baldwin Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Baldwin Park | 80 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Baldwin Park's Water Unique?
Local geology and source profile
Baldwin Park, California, in the San Gabriel Valley of eastern Los Angeles County (one of the most densely populated inland LA County communities, birthplace of McDonald's drive-through), draws its municipal water supply through the Valley County Water District and local San Gabriel Valley Basin groundwater wells — pumping from the Main San Gabriel Groundwater Basin alluvial aquifer beneath the San Gabriel Valley floor, managed by the San Gabriel Basin Water Quality Authority (SGBWQA) and the Main San Gabriel Basin Watermaster. Water hardness in Baldwin Park measures 80 mg/L — classified as moderately soft, notably low for a San Gabriel Valley Basin city.
Baldwin Park's soft supply reflects the western San Gabriel Valley groundwater zone's characteristics near the Baldwin Park Key Well — a critical monitoring point for the Main San Gabriel Basin. The Main San Gabriel Basin in the Baldwin Park area is heavily recharged by the San Gabriel River spreading operations at the San Gabriel Canyon (Santa Anita and Whittier Narrows spreading grounds), introducing soft San Gabriel Mountains granodiorite snowmelt into the basin. The Baldwin Park area sits near the basin's western active recharge zone, where the soft mountain-derived recharge dominates the groundwater composition. The SGBWQA-managed soft recharge from spreading operations keeps the Baldwin Park zone among the softest in the San Gabriel Valley Basin.
With hardness at 80 mg/L, Baldwin Park residents enjoy moderately soft water with minimal scale challenges. Faucet aerators and showerheads develop deposits slowly — bi-monthly cleaning with citric acid solution is sufficient. Valley County Water District consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the San Gabriel Valley Basin via the Baldwin Park Unified School District and Valley County Water District — the Main San Gabriel Basin alluvial aquifer recharged by the San Gabriel River spreading grounds at the San Gabriel Canyon mouth; soft supply at 80 mg/L in eastern Los Angeles County — notably soft for a San Gabriel Valley Basin city.