Jea: Mayport Wtp, FL
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 ppb (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. 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.
Who runs the water here
Jea: Mayport Wtp serves about 257 people through 98 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Duval County, Florida. EPA system ID: FL2160735; phone on file: 904-665-4540. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2020 (0.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Jea: Mayport Wtp is 0.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.6 ppb |
| 2020 | 0.6 ppb |
| 2017 | 0 (not detected) |
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. Jea: Mayport Wtp's 0.6 ppb sits at the 35th percentile in Florida and the 45th nationally (higher means more lead).
Neighbouring systems
16 other systems share Duval County; 10 of them have a higher latest lead result than Jea: Mayport Wtp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Jea Major Grid | 826,664 | 1.5 ppb |
| Atlantic Beach Water System | 23,503 | 0.8 ppb |
| Jacksonville Beach Wtp | 23,352 | 1 ppb |
| N.A.S. Jacksonville | 22,000 | 1.9 ppb |
| N.S. Mayport | 20,500 | 2.9 ppb |
| Neptune Beach | 7,270 | 0.8 ppb |
| Jacksonville University | 3,480 | 0.5 ppb |
| Baldwin Water System | 1,790 | 0.5 ppb |
| Saddle Brook Landings | 1,000 | 0.5 ppb |
| Oaks Of Atlantic Beach | 556 | 0.7 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Jacksonville, 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 Jea: Mayport Wtp 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.