Port Saint John Water Hardness & Quality Report (2026)
Water Hardness
4.2 grains per gallon
Source
groundwater
pH Level
7.4
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
159.2 mg/L
Est. Daily Cost
$0.19
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 Saint John, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Port Saint John | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.2 yrs | 8.5 yrs | -15% |
| Washing Machine | 10.9 yrs | 12 yrs | -9% |
| Water Heater | 12.7 yrs | 15 yrs | -15% |
Regional Water Comparison
How Port Saint John compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Port Saint John, Florida | 72 mg/L | 4.8 ppt | 🟡 Moderately Hard | groundwater |
| Cocoa, Florida | 105.5 mg/L | 5.9 ppt | 🟡 Moderately Hard | groundwater |
| Titusville, Florida | 183.5 mg/L | 8.3 ppt | 🔴 Very Hard | groundwater |
| Rockledge, Florida | 192 mg/L | 8.6 ppt | 🔴 Very Hard | groundwater |
| Merritt Island, Florida | 80.5 mg/L | 5.1 ppt | 🟡 Moderately Hard | groundwater |
National Benchmark
How Port Saint John compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Port Saint John | 72 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Port Saint John's Water Unique?
Local geology and source profile
Port Saint John, Florida, in Brevard County — a Brevard County unincorporated community adjacent to Cocoa and Titusville on the east-central Florida coast — receives its water from the Brevard County Water, drawing from the Floridan Aquifer (Brevard County) through the east-central Florida coast distribution.
The surprisingly soft 72 mg/L hardness and TDS of 159.2 mg/L are much softer than typical Floridan communities (South Daytona FL: 241.5/723; Azalea Park FL: 124/304) — reflecting Brevard County's unique Floridan Aquifer position where the shallower surficial aquifer system blends with the upper Floridan, producing much softer water than the deep calcareous Floridan zones (compare Azalea Park FL: 124/304 in Orange County harder; Port Saint John far softer from the Brevard County upper Floridan). The Floridan Aquifer at Brevard County — Eocene Avon Park Formation (calcareous — diluted), Oligocene Suwannee Limestone (calcareous — partially diluted), and Quaternary surficial sand aquifer (insoluble — primary dilutant).
At 72 mg/L, Port Saint John's water is soft — scale forms slowly in appliances, dishwashers remain efficient, and no softening is needed. Annual descaling is appropriate. The PFAS level of 4.8 ppt warrants a certified drinking water filter — the Brevard County east-central Florida space coast (Kennedy Space Center) industrial corridor contribute to Port Saint John's elevated readings.
Geology & Source: Port Saint John in Brevard County is served by Brevard County Water drawing from the Floridan Aquifer — the Brevard County aquifer includes Eocene Avon Park Formation (calcareous) and Quaternary surficial sand aquifer (insoluble) — FL Brevard County Floridan Aquifer Eocene calcareous supply produces soft water at 72 mg/L with TDS 159.2 mg/L.