Countryside Estates, DE
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Countryside Estates at a glance
Countryside Estates serves about 50 people through 21 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kent County, Delaware. EPA system ID: DE0000129; phone on file: 302-363-3619. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Countryside Estates is 4.32 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2021 | 0.48 ppb |
| 2018 | 4.32 ppb |
How Countryside Estates compares
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. Countryside Estates's reported as 0 (not detected) sits at the 3rd percentile in Delaware and the 3rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
57 other systems share Kent County; 22 of them have a higher latest lead result than Countryside Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dover Water Department | 39,491 | 2 ppb |
| Camden Pump District | 17,208 | 0 (not detected) |
| Garrison Lake Pump District | 17,148 | 0.62 ppb |
| Smyrna Water Department | 11,813 | 0 (not detected) |
| Dover Air Force Base | 11,000 | 5 ppb |
| Milford Water Department | 9,800 | 0 (not detected) |
| Church Creek (Awc) | 9,654 | 0 (not detected) |
| Artesian Northern Kent Regional | 7,014 | 0 (not detected) |
| Camden Wyoming Sewer And Water Authority | 5,000 | 2.1 ppb |
| Harrington Water Department | 3,562 | 0 (not detected) |
Your move
Look up your address in Countryside Estates's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Countryside Estates 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. What a 90th-percentile result does and does not tell you: how to read a lead result. A zero today does not rule out a jump later - the rules are tightening in 2027.