Martinez Water Hardness & Quality Report (2026)
Water Hardness
8.6 grains per gallon
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
424.3 mg/L
Est. Daily Cost
$0.39
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 Martinez, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Martinez | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 8.1 yrs | 12 yrs | -33% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Martinez compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Martinez, California | 147.5 mg/L | 6.3 ppt | 🟠 Hard | mixed |
| Benicia, California | 182 mg/L | 7.3 ppt | 🔴 Very Hard | mixed |
| Pleasant Hill, California | 144 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Concord, California | 97 mg/L | 4.8 ppt | 🟡 Moderately Hard | mixed |
| Walnut Creek, California | 147 mg/L | 6.3 ppt | 🟠 Hard | mixed |
National Benchmark
How Martinez compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Martinez | 147.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Martinez home
Shop water softeners on Amazon.com →
What Makes Martinez's Water Unique?
Local geology and source profile
Martinez, California, the Contra Costa County seat — the birthplace of Joe DiMaggio (the 'Yankee Clipper' — perhaps the greatest baseball player of the 20th century, born in Martinez in 1914) and the birthplace of John Muir's conservation legacy (John Muir National Historic Site — the home of John Muir, the 'Father of the National Parks,' in Martinez), a major San Francisco east Bay Area community at the Carquinez Strait (where the Sacramento River empties into San Francisco Bay), and a historically industrial Contra Costa County city transitioning to a diverse Bay Area community — draws its municipal water supply via the Contra Costa Water District (CCWD). Water hardness in Martinez measures 147.5 mg/L — classified as moderately hard.
Martinez's moderate hardness reflects the CCWD Sacramento–San Joaquin Delta supply characteristics. The CCWD draws from the Sacramento–San Joaquin Delta (Sierra Nevada–Coast Range calcareous-moderate runoff and Central Valley agricultural return flows). CCWD stores and treats Delta water in the Los Vaqueros Reservoir (off-stream storage in the Diablo Range foothills). The Delta supply and CCWD treatment produce the moderate 147.5 mg/L at Martinez in the central Contra Costa distribution zone.
At 147.5 mg/L, Martinez residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended. CCWD consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Sacramento–San Joaquin Delta supply via the Contra Costa Water District (CCWD) — the Contra Costa County central Bay Area (CCWD Los Vaqueros Reservoir treatment zone — central Contra Costa Delta supply); moderately hard at 147.5 mg/L reflecting the CCWD Delta supply in the Martinez zone.