Ascot Landing Subdivision, DE
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 10.4 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Ascot Landing Subdivision at a glance
Ascot Landing Subdivision serves about 338 people through 136 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in New Castle County, Delaware. EPA system ID: DE0020148; phone on file: 302-832-7100. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 10.4 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Ascot Landing Subdivision is 10.4 ppb across 2 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 10.4 ppb over 10 |
| 2025 | 0 (not detected) |
Against other Delaware systems
Of the 196 Delaware systems with a lead result, the median latest reading is 0.31 ppb; 1 are over 15 ppb right now and 14 have gone over at some point. Ascot Landing Subdivision's 10.4 ppb sits at the 96th percentile in Delaware and the 97th nationally (higher means more lead).
Nearby utilities
30 other systems share New Castle County; 2 of them have a higher latest lead result than Ascot Landing Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Artesian Water Company | 231,114 | 1 ppb |
| Wilmington Water Department | 107,976 | 0 (not detected) |
| Veolia Water Delaware, Inc | 100,495 | 2 ppb |
| Newark Water Department | 40,000 | 1 ppb |
| Middletown Water Department | 17,700 | 0 (not detected) |
| Municipal Services Commission | 5,549 | 0 (not detected) |
| East Ncc District | 5,538 | 0 (not detected) |
| North West Pump District | 4,149 | 0.8 ppb |
| Willow Grove Mill | 3,090 | 0 (not detected) |
| Delaware City Water Department (Awc) | 2,610 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Bear, DE may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Ascot Landing Subdivision whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. See what changes at 10 ppb in 2027.