Lake Harney Water Association, FL
Lead detected, under the action levels
Latest 90th-percentile lead: 0.4 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Lake Harney Water Association at a glance
Lake Harney Water Association serves about 700 people through 200 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Seminole County, Florida. EPA system ID: FL3590698; phone on file: 407-575-8659. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2024 (1.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lake Harney Water Association is 4.5 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.4 ppb |
| 2024 | 1.4 ppb |
| 2024 | 1.4 ppb |
| 2021 | 0.5 ppb |
| 2020 | 4.5 ppb |
| 2018 | 3.1 ppb |
Against other Florida systems
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. Lake Harney Water Association's 0.4 ppb sits at the 29th percentile in Florida and the 42nd nationally (higher means more lead).
Nearby utilities
37 other systems share Seminole County; 19 of them have a higher latest lead result than Lake Harney Water Association. 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 |
| Seminole County Northwest | 31,986 | 0 (not detected) |
| Longwood, City Of (2 Wps) | 23,237 | 1.6 ppb |
| Seminole County Northeast | 19,925 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Geneva, FL 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 Lake Harney Water Association 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. The action level is dropping - the 10 ppb rule from 2027.