Delaware · system DE0000629 · serves 3,200 people
Band placed by this system's most recent reported result within a rolling three-year window; the three-year range below includes non-detects alongside detected results.
The reading
A single reading is not a complete account of what a household drinks, so the three-year range and the number of tests behind it are shown too — a reading backed by many tests over three years is a fuller picture than one from a single sample.
Source: Delaware Department of Health and Social Services - Office of Drinking Water record · Delaware · system DE0000629 · the three years from August 9, 2023 to August 9, 2026
Where this ranks
This system's nitrate sits in the top 10% nationally. Systems reporting less serve about 90% of everyone on NitrateSmart's tracked supply; the other about 10% are on systems reporting the same or more. That compares what systems reported, not what comes out of any one tap.
What "Human impact clear" means
Above 3 mg/L, human activity is the leading explanation for the nitrate in this system's water[1]. It is still a statement about the source, not a health verdict — the level is well below the federal limit.
Sources
The bands describe how strongly human activity, read from nitrate, has marked a water source — they are not a safety verdict. More on what the numbers mean and where nitrate comes from.
Nitrate in community water systems, from the utilities’ own compliance reporting.
Results reaching back to July 2023 · current through August 9, 2026.
Educational information, not medical or personal safety advice.