Village Park Water Hardness & Quality Report (2026)
Water Hardness
4.5 grains per gallon
Source
groundwater
pH Level
7.7
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
257.7 mg/L
Est. Daily Cost
$0.21
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 Village Park, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Village Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.1 yrs | 8.5 yrs | -16% |
| Washing Machine | 10.8 yrs | 12 yrs | -10% |
| Water Heater | 12.5 yrs | 15 yrs | -17% |
Regional Water Comparison
How Village Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Village Park, Hawaii | 77 mg/L | 1.5 ppt | 🟡 Moderately Hard | groundwater |
| Royal Kunia, Hawaii | 76.5 mg/L | 1.5 ppt | 🟡 Moderately Hard | groundwater |
| Waipahu, Hawaii | 28 mg/L | 0.8 ppt | 🟢 Soft | groundwater |
| Waipio, Hawaii | 28.5 mg/L | 0.8 ppt | 🟢 Soft | groundwater |
| Mililani Town, Hawaii | 67.5 mg/L | 1.3 ppt | 🟡 Moderately Hard | groundwater |
National Benchmark
How Village Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Village Park | 77 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Village Park's Water Unique?
Local geology and source profile
Village Park, Hawaii, in Honolulu County — a Honolulu County community adjacent to Waipio and Mililani on the central Oahu plateau — receives its water from the Honolulu Board of Water Supply (BWS), drawing from the Oahu volcanic aquifer through the central Oahu distribution.
The soft 77 mg/L hardness and TDS of 257.7 mg/L reflect the Honolulu County Oahu Aquifer supply's soft volcanic character — the Tertiary Ko'olau Basalt and Quaternary Waianae Basalt are both highly insoluble volcanic basalt formations contributing minimal calcareous mineral content to the Oahu groundwater, while the higher TDS reflects some marine-influenced mineral content in the coastal aquifer blending (compare Waipio HI: 75/252 in Honolulu County comparable; Mililani HI: 78/262 in Honolulu County comparable; Village Park consistent soft from the same Honolulu County Oahu Aquifer Ko'olau Basalt Tertiary insoluble supply). The Oahu volcanic aquifer — Tertiary Ko'olau Basalt (insoluble — primary dilutant), Quaternary Waianae Basalt (insoluble — secondary dilutant), and Quaternary Oahu coastal plain sediment (slightly calcareous — TDS contributor).
At 77 mg/L with TDS 258, Village Park's water is soft — minimal scale buildup. Annual descaling is appropriate. The PFAS level of 1.5 ppt is very low — an excellent result for Oahu. Review the Honolulu Board of Water Supply's annual water quality report.
Geology & Source: Village Park in Honolulu County draws from the Board of Water Supply on the Oahu Aquifer (Honolulu County, central Oahu, Hawaii) — the Oahu aquifer draws from Tertiary Ko'olau Basalt (insoluble) and Quaternary Waianae Basalt (insoluble) — Hawaii Honolulu County Oahu Aquifer Ko'olau Basalt Tertiary insoluble supply produces soft water at 77 mg/L with TDS 257.7 mg/L.