Green Haven Water Hardness & Quality Report (2026)
Water Hardness
9.7 grains per gallon
Source
reservoir
pH Level
8.1
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
393.5 mg/L
Est. Daily Cost
$0.44
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 Green Haven, your appliances are currently losing 22% efficiency due to mineral buildup.
| Appliance | In Green Haven | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.1 yrs | 8.5 yrs | -52% |
| Washing Machine | 7.4 yrs | 12 yrs | -38% |
| Water Heater | 8.9 yrs | 15 yrs | -41% |
Regional Water Comparison
How Green Haven compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Green Haven, Maryland | 166.5 mg/L | 9.1 ppt | 🟠 Hard | reservoir |
| Pasadena, Maryland | 189 mg/L | 10.3 ppt | 🔴 Very Hard | reservoir |
| Riviera Beach, Maryland | 160 mg/L | 8.7 ppt | 🟠 Hard | reservoir |
| Severna Park, Maryland | 145 mg/L | 7.8 ppt | 🟠 Hard | reservoir |
| Lake Shore, Maryland | 84 mg/L | 4.4 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Green Haven compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Green Haven | 166.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Green Haven's Water Unique?
Local geology and source profile
Green Haven, Maryland, in Anne Arundel County — an unincorporated Anne Arundel County community on the Chesapeake Bay western shore in the north Anne Arundel corridor adjacent to Pasadena and Severna Park, part of the Baltimore-Annapolis suburban belt — receives its municipal water from Anne Arundel County Bureau of Utilities, drawing from the Baltimore metropolitan water system (Susquehanna-Conowingo supply or Patuxent River reservoirs) through the county distribution infrastructure.
The moderately hard 166.5 mg/L hardness and TDS of 393.5 mg/L are harder than the Lake Shore portion of Anne Arundel County (84 mg/L, TDS 130) — suggesting Green Haven draws from the Baltimore metropolitan system which uses the Susquehanna River at Conowingo Reservoir. The Susquehanna at Conowingo drains the Maryland-Pennsylvania Piedmont (Proterozoic gneiss), but also receives significant input from the Great Valley limestone (Adams County PA, Frederick County MD) and calcareous Paleozoic carbonate tributary systems — producing harder water than the pure Patuxent Piedmont reservoirs.
At 166.5 mg/L, Green Haven's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling is appropriate. The PFAS level of 9.1 ppt warrants a certified reverse osmosis drinking water filter — Fort Meade (Anne Arundel County — US Army AFFF user), the Aberdeen Proving Ground (Harford County — in the Susquehanna watershed, major Army testing PFAS site), and the Baltimore-Chesapeake PFAS industrial corridor contribute to Green Haven's elevated readings.
Geology & Source: Green Haven in Anne Arundel County draws from Anne Arundel County Utilities on the Susquehanna-Conowingo supply (Baltimore metro) — the Susquehanna at Conowingo drains the Maryland-Pennsylvania Piedmont (Precambrian gneiss) and the Great Valley (Ordovician limestone) carbonate belt — Maryland Piedmont and Great Valley carbonate watershed produces moderately hard water at 166.5 mg/L with TDS 393.5 mg/L in this Anne Arundel County Maryland community.