St. Johns Harbor, FL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). 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.
St. Johns Harbor at a glance
St. Johns Harbor serves about 325 people through 145 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Putnam County, Florida. EPA system ID: FL2541086; phone on file: 386-325-3733. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St. Johns Harbor is 2.7 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 2.2 ppb |
| 2016 | 2.7 ppb |
Where this result ranks
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. St. Johns Harbor's reported as 0 (not detected) sits at the 15th percentile in Florida and the 19th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Putnam County
29 other systems share Putnam County; 16 of them have a higher latest lead result than St. Johns Harbor. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| R.C. Willis Wtp (City Of Palatka) | 11,900 | 16.8 ppb |
| Town Of Welaka | 2,421 | 0 (not detected) |
| Crescent City Wtp | 1,900 | 0 (not detected) |
| East Putnam Regional | 1,500 | 1.1 ppb |
| Melrose Wtp | 1,300 | 3.4 ppb |
| Rpuma | 1,000 | 1 ppb |
| Interlachen Ws | 791 | 0.7 ppb |
| Interlachen Lake Estates | 717 | 0 (not detected) |
| Pomona Park | 672 | 0 (not detected) |
| Hermits Cove Water System | 558 | 0 (not detected) |
Your move
Look up your address in St. Johns Harbor'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 St. Johns Harbor 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. Small systems behave differently: why small systems go over more often.