Bremerton Water Hardness & Quality Report (2026)
Water Hardness
2.4 grains per gallon
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
81.8 mg/L
Est. Daily Cost
$0.11
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 Bremerton, your appliances are currently losing 5% efficiency due to mineral buildup.
| Appliance | In Bremerton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 12.1 yrs | 12 yrs | — |
| Water Heater | 14 yrs | 15 yrs | -7% |
Regional Water Comparison
How Bremerton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Bremerton, Washington | 41 mg/L | 2.2 ppt | 🟢 Soft | reservoir |
| Port Orchard, Washington | 70.5 mg/L | 3.1 ppt | 🟡 Moderately Hard | reservoir |
| Silverdale, Washington | 20 mg/L | 1.5 ppt | 🟢 Soft | reservoir |
| Bainbridge Island, Washington | 38 mg/L | 2.1 ppt | 🟢 Soft | reservoir |
| Artondale, Washington | 52.5 mg/L | 2.5 ppt | 🟢 Soft | reservoir |
National Benchmark
How Bremerton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bremerton | 41 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Bremerton's Water Unique?
Local geology and source profile
Bremerton, Washington, in Kitsap County — a major west Puget Sound naval city, home of Naval Base Kitsap (the third largest US naval installation — the largest naval base on the West Coast, homeport of several nuclear-powered aircraft carriers and submarines), a ferry-connected Kitsap County city directly across Puget Sound from Seattle (the Bremerton–Seattle ferry — the longest ferry route in the Washington State ferry system), and a diverse Kitsap County community with a strong Navy and defense community — draws its municipal water supply from the Gold Creek watershed (Casad Dam reservoir) via the City of Bremerton Public Works. Water hardness in Bremerton measures 41 mg/L — classified as very soft.
Bremerton's very soft supply — among the softest municipal supplies in Washington State — reflects the Kitsap Peninsula watershed's calcareous-poor geology. The Gold Creek and Anderson Creek watersheds at Bremerton drain: the Kitsap Peninsula Olympic Peninsula fringe (Eocene Olympic subduction complex — calcareous-poor basalt, sandstone, and mudstone of the Olympic melange; the Olympic subduction complex is one of the most calcareous-poor basement terrains in the Pacific Northwest); Quaternary calcareous-poor volcanic outwash from the Olympic Mountains. The calcareous-poor Olympic subduction complex terrain produces the exceptionally soft 41 mg/L.
With hardness at 41 mg/L, Bremerton residents enjoy very soft water. City of Bremerton Public Works consistently delivers water meeting all Washington DOH and EPA Safe Drinking Water Act requirements.
Geology & Source: Reservoir supply from the Gold Creek and Anderson Creek watershed (Casad Dam–Anderson Creek reservoir system) via the Bremerton Public Works — the Kitsap County Washington state west Puget Sound Olympic Peninsula rain shadow (Quaternary calcareous-poor volcanic outwash and Eocene calcareous-poor Olympic subduction complex); very soft supply at 41 mg/L — reflecting the Olympic Peninsula calcareous-poor volcanic and subduction complex watershed.