PFAS & Water Quality in Wilmington, DE

Where Wilmington's drinking water comes from

Wilmington sits where the Brandywine and the Christina meet near the Delaware River, and much of the region's drinking water tends to come from these surface waters and from area groundwater rather than a single distant source. Supplies across northern Delaware largely lean on this mix of creek-fed surface water and local aquifers. Which blend reaches a given street can vary, so read this as the broad picture for the area.

Figuring out your Wilmington water company starts with the system named above, plus its public contact details and its yearly Consumer Confidence Report, which utilities are required to publish. It's worth knowing that two homes a short walk apart can be on entirely different public water systems, so this city-level summary may not describe your own tap. A quick call to the utility listed above costs nothing and answers more than a search result. That address-level diligence is worth reviewing when evaluating an address.

Wilmington water hardness

Groundwater across much of the mid-Atlantic, including parts of Delaware, tends toward the harder end, though that's a regional lean and your particular supply may not follow it. We won't print a hardness number for Wilmington, since no hardness dataset exists to back one up. If you're tired of cloudy glassware or a scaled-up kettle, a drugstore test kit or the hardness entry in your utility's annual report will tell you where you actually stand.

Reading this when you're evaluating a Wilmington address

City-level numbers describe the broad pattern around Wilmington; two homes a mile apart can sit on different water systems with very different profiles. The address report fills that gap — it identifies the public water system serving a specific property, lists any PFAS detections on that exact system, and maps the nearby industrial and Superfund sources.