Mdwasa/Rex Utilities, FL
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
About Mdwasa/Rex Utilities
Mdwasa/Rex Utilities serves about 45,200 people through 12,700 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 Miami-Dade County, Florida. EPA system ID: FL4131202; phone on file: 305-888-2522. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Mdwasa/Rex Utilities's lead record
That is down 1.2 ppb from 2.2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Mdwasa/Rex Utilities is 2.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1 ppb |
| 2020 | 2.2 ppb |
| 2018 | 1.8 ppb |
How Mdwasa/Rex Utilities 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. Mdwasa/Rex Utilities's 1 ppb sits at the 53rd percentile in Florida and the 56th nationally (higher means more lead).
Neighbouring systems
24 other systems share Miami-Dade County; 15 of them have a higher latest lead result than Mdwasa/Rex Utilities. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mdwasa - Main System | 2,377,460 | 3.1 ppb |
| Hialeah, City Of | 238,000 | 0.9 ppb |
| North Miami Beach | 180,000 | 2.1 ppb |
| Miami Beach, City Of | 100,000 | 7 ppb |
| North Miami, City Of | 89,349 | 1.8 ppb |
| Fkaa J. Robert Dean W.T.P. | 86,000 | 4 ppb |
| Homestead, City Of | 80,000 | 2.5 ppb |
| Hialeah Gardens | 22,200 | 1.5 ppb |
| Opa Locka, City Of | 16,479 | 0.9 ppb |
| Florida City | 13,453 | 1.2 ppb |
Next steps for Miami, FL
Test your own tap with a certified lab first-draw sample; Miami, 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 Mdwasa/Rex Utilities 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. Size matters more than most people expect: small vs large water systems.