Port Hueneme Water Hardness & Quality Report (2026)
Water Hardness
10.9 grains per gallon
Source
mixed
pH Level
8.3
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
587.5 mg/L
Est. Daily Cost
$0.50
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 Port Hueneme, your appliances are currently losing 25% efficiency due to mineral buildup.
| Appliance | In Port Hueneme | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.4 yrs | 8.5 yrs | -60% |
| Washing Machine | 6.7 yrs | 12 yrs | -44% |
| Water Heater | 8.1 yrs | 15 yrs | -46% |
Regional Water Comparison
How Port Hueneme compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Port Hueneme, California | 187 mg/L | 7.4 ppt | 🔴 Very Hard | mixed |
| Oxnard, California | 87 mg/L | 4.4 ppt | 🟡 Moderately Hard | mixed |
| Ventura, California | 80 mg/L | 4.2 ppt | 🟡 Moderately Hard | mixed |
| Camarillo, California | 51.5 mg/L | 3.4 ppt | 🟢 Soft | mixed |
| Santa Paula, California | 97 mg/L | 4.7 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Port Hueneme compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Port Hueneme | 187 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Port Hueneme's Water Unique?
Local geology and source profile
Port Hueneme, California, in Ventura County — one of California's only deep-water ports south of San Francisco Bay, home to Naval Base Ventura County (NBVC), the Port of Hueneme commercial shipping terminal, and the Seabee Museum — receives its municipal water from the City of Port Hueneme Public Works or the Calleguas Municipal Water District (CMWD), which draws from Metropolitan Water District of Southern California (MWD) imported supply and the local Pleasant Valley Groundwater Basin of the Oxnard Plain. Port Hueneme's supply reflects the Ventura County coastal zone's blend of MWD import and local groundwater.
The moderately hard 187 mg/L hardness and elevated TDS of 587.5 mg/L reflect the Calleguas supply's heavy reliance on the Colorado River Aqueduct component of the MWD blend, combined with local coastal groundwater. The Colorado River supply (via Lake Havasu) carries hard, saline water (~300–450 mg/L hardness, ~700–900 mg/L TDS) from the Colorado Plateau's evaporite and carbonate terrain, which is partially softened by MWD treatment but still adds significant mineral content to the Calleguas blend. The Pleasant Valley Groundwater Basin also contributes harder coastal aquifer water. Port Hueneme is particularly dependent on the Calleguas-MWD supply because local groundwater has been impacted by seawater intrusion in this coastal location.
At 187 mg/L, Port Hueneme's water is moderately hard — scale builds in kettles and coffee machines within weeks to months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling of heating appliances is the appropriate schedule. The PFAS level of 7.4 ppt warrants a certified drinking water filter — the Naval Base Ventura County (site of extensive PFAS-containing firefighting foam use on base runways and flight training areas) and the adjacent Port Hueneme military and commercial shipping corridor represent significant PFAS sources for the local groundwater and water supply.
Geology & Source: Port Hueneme in Ventura County is served by the Calleguas Municipal Water District drawing from Metropolitan Water District (MWD) import and the Pleasant Valley Groundwater Basin — MWD supply (Colorado River Aqueduct blend) and the coastal Oxnard Plain aquifer contribute elevated dissolved minerals — blended MWD Colorado River and Ventura coastal groundwater produces moderately hard water at 187 mg/L with elevated TDS 588 mg/L in this Ventura County port community.