Dover vs Wilmington Water Quality
Side-by-side water quality comparison for two Delaware cities.
If you are comparing Dover and Wilmington water quality - whether moving, choosing between the two, or curious about a relative's water - here is what the data shows.
Hardness comparison
Dover has somewhat harder water at 52 PPM versus Wilmington at 22 PPM, a difference of 30 PPM. Wilmington residents generally do not need any water softening equipment.
Water sources and why they differ
Water sources differ: Dover draws from Groundwater wells, while Wilmington uses Brandywine Creek. The mix of groundwater and surface water explains much of the hardness difference.
Contaminant concerns
PFAS contamination is a concern in Wilmington (44.52 ppt, above the EPA limit of 4 ppt). A reverse osmosis system or NSF P473-certified filter is recommended for drinking water.
What this means for you
Not sure what your specific situation needs? Take the quiz to get a recommendation based on your water data, budget, and household size.
| Metric | Dover | Wilmington |
|---|---|---|
| Hardness | 52 PPM | 22 PPM |
| GPG | 3 | 1.3 |
| TDS | 88 PPM | 62 PPM |
| PFAS | 0 ppt | 44.52 ppt |
| Lead | 2 ppb | 2.2 ppb |
| Chlorine | 1 mg/L | 1.2 mg/L |
| Level | Slightly Hard | Slightly Hard |