Seminole County Northwest, FL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2023). 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.
About Seminole County Northwest
Seminole County Northwest serves about 31,986 people through 9,490 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Seminole County, Florida. EPA system ID: FL3594107; phone on file: 407-665-2759. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Seminole County Northwest's lead record
That is down 1.5 ppb from 1.5 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Seminole County Northwest is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 1.5 ppb |
| 2017 | 3 ppb |
How Seminole County Northwest compares
Of the 1,481 Florida systems with a lead result, the median latest reading is 1 ppb; 3 are over 15 ppb right now and 85 have gone over at some point. Seminole County Northwest's reported as 0 (not detected) sits at the 24th percentile in Florida and the 39th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
37 other systems share Seminole County; 20 of them have a higher latest lead result than Seminole County Northwest. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sanford, City Of (2 Wps) | 79,715 | 0.8 ppb |
| Seminole County Southeast | 70,040 | 1.2 ppb |
| Casselberry, City Of (3 Wps) | 54,747 | 0 (not detected) |
| Altamonte Springs Water Dept (2 Wps) | 51,000 | 0 (not detected) |
| Oviedo, City Of | 47,933 | 2.1 ppb |
| Sanlando (3 Wtps) | 36,953 | 1.5 ppb |
| Winter Springs, City Of (3 Wps) | 34,657 | 0.6 ppb |
| Longwood, City Of (2 Wps) | 23,237 | 1.6 ppb |
| Seminole County Northeast | 19,925 | 0 (not detected) |
| Lake Mary, City Of | 17,066 | 2.1 ppb |
Next steps for Winter Park, FL
Look up your address in Seminole County Northwest'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 Seminole County Northwest 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.