Ladera Ranch Water Hardness & Quality Report (2026)
Water Hardness
3.3 grains per gallon
Source
mixed
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
122.9 mg/L
Est. Daily Cost
$0.15
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 Ladera Ranch, your appliances are currently losing 8% efficiency due to mineral buildup.
| Appliance | In Ladera Ranch | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.7 yrs | 8.5 yrs | -9% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 13.3 yrs | 15 yrs | -11% |
Regional Water Comparison
How Ladera Ranch compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Ladera Ranch, California | 56.5 mg/L | 3.5 ppt | 🟢 Soft | mixed |
| Mission Viejo, California | 173 mg/L | 6.9 ppt | 🟠 Hard | mixed |
| Coto De Caza, California | 151 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| San Juan Capistrano, California | 34 mg/L | 2.8 ppt | 🟢 Soft | mixed |
| Rancho Santa Margarita, California | 136 mg/L | 5.8 ppt | 🟠 Hard | mixed |
National Benchmark
How Ladera Ranch compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Ladera Ranch | 56.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Ladera Ranch's Water Unique?
Local geology and source profile
Ladera Ranch, California, in Orange County in the Saddleback Valley foothills of the Santa Ana Mountains — one of Southern California's most successful master-planned communities, developed beginning in the early 2000s with distinctive themed neighborhoods — receives its municipal water from the Santa Margarita Water District (SMWD), which draws entirely from Metropolitan Water District of Southern California (MWD) imported supply. SMWD has no local groundwater sources, depending exclusively on MWD's system of Colorado River Aqueduct and State Water Project deliveries.
The very soft 56.5 mg/L hardness and low TDS of 122.9 mg/L are surprisingly soft for an Orange County community, reflecting the heavy State Water Project (SWP) component in SMWD's MWD allocation. The State Water Project carries water from the Feather River (northern Sierra Nevada) and the Sacramento-San Joaquin Delta through the California Aqueduct — water that drains soft Sierra Nevada granitic and metamorphic rock terrain with very low carbonate content (~30–60 mg/L hardness). In periods of heavy SWP allocation, SMWD's supply receives a larger proportion of this soft SWP water relative to the harder Colorado River Aqueduct component, significantly softening the Ladera Ranch finished supply.
At 56.5 mg/L, Ladera Ranch's water is very soft — excellent for household appliances and comfortable for this Saddleback Valley master-planned community. Scale forms slowly over many months in kettles and appliances, soap lathers generously, and the dishwasher produces spotless results. Semi-annual descaling of heating appliances is adequate. The PFAS level of 3.5 ppt is favorable — Ladera Ranch's planned community setting on dedicated open space hillside terrain, away from industrial and military PFAS sources, results in one of Orange County's better PFAS readings.
Geology & Source: Ladera Ranch in Orange County is served by the Santa Margarita Water District (SMWD) drawing from Metropolitan Water District (MWD) import — the Ladera Ranch service area sits in the Saddleback Valley foothills above the Arroyo Trabuco watershed — SMWD's MWD-dominant import supply with substantial State Water Project soft component from Feather River origin produces very soft water at 56.5 mg/L with low TDS of 123 mg/L.