Hacienda Heights Water Hardness & Quality Report (2026)
Water Hardness
6.8 grains per gallon
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
304.4 mg/L
Est. Daily Cost
$0.31
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 Hacienda Heights, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Hacienda Heights | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.8 yrs | 8.5 yrs | -32% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Hacienda Heights compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Hacienda Heights, California | 116.5 mg/L | 5.3 ppt | 🟡 Moderately Hard | mixed |
| La Puente, California | 48 mg/L | 3.3 ppt | 🟢 Soft | mixed |
| Avocado Heights, California | 48.5 mg/L | 3.3 ppt | 🟢 Soft | mixed |
| Valinda, California | 46.5 mg/L | 3.2 ppt | 🟢 Soft | mixed |
| West Puente Valley, California | 64.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Hacienda Heights compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Hacienda Heights | 116.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Hacienda Heights's Water Unique?
Local geology and source profile
Hacienda Heights, California, an unincorporated community in the eastern San Gabriel Valley of Los Angeles County adjacent to La Puente and Industry — home of the Hsi Lai Temple (the largest Buddhist temple in the United States), a large Chinese-American, Taiwanese-American, and Latino community in the eastern LA County San Gabriel Valley corridor — draws its municipal water supply from the Main San Gabriel Valley Basin groundwater and MWD imports via the Rowland Water District. Water hardness in Hacienda Heights measures 116.5 mg/L — classified as moderately hard.
Hacienda Heights' moderate hardness reflects the eastern San Gabriel Valley's Rowland Water District supply zone. The Rowland Basin (eastern San Gabriel Valley — the Puente Hills sub-basin of the Main San Gabriel Valley Basin) receives: MWD Colorado River imports percolated through basin spreading grounds (moderately hard); State Water Project Bay-Delta import blending (soft); and local Puente Hills recharge (Repetto Formation Miocene calcareous marine sandstone of the Puente Hills — some calcareous contribution). The Rowland Water District blends the MWD import and local groundwater to produce the moderate 116.5 mg/L at Hacienda Heights — slightly softer than the central San Gabriel Valley due to the higher local soft mountain groundwater fraction.
At 116.5 mg/L, Hacienda Heights residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. Rowland Water District consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Main San Gabriel Valley Basin groundwater and Metropolitan Water District (MWD) import via the Rowland Water District — the southeast San Gabriel Valley Puente Hills Quaternary alluvial aquifer (Colorado River and Bay-Delta import + San Gabriel Mountains recharge) in eastern Los Angeles County; moderately hard supply at 116.5 mg/L in Los Angeles County.