City Of Los Fresnos, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 2.57 ppb (monitoring period 2024-2026). 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.
City Of Los Fresnos at a glance
City Of Los Fresnos serves about 6,009 people through 2,003 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Cameron County, Texas. EPA system ID: TX0310004; phone on file: 956-233-5768. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (1.76 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Los Fresnos is 2.57 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.57 ppb |
| 2023 | 1.76 ppb |
| 2020 | 2.4 ppb |
| 2017 | 1.4 ppb |
| 2016 | 1.7 ppb |
Where this result ranks
Of the 4,447 Texas systems with a lead result, the median latest reading is 0.28 ppb; 15 are over 15 ppb right now and 202 have gone over at some point. City Of Los Fresnos's 2.57 ppb sits at the 88th percentile in Texas and the 78th nationally (higher means more lead).
Neighbouring systems
20 other systems share Cameron County; 0 of them have a higher latest lead result than City Of Los Fresnos. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Brownsville Public Utilities Board | 201,249 | 0 (not detected) |
| Harlingen Water Works System | 85,900 | 0 (not detected) |
| Laguna Madre Water District | 46,674 | 0 (not detected) |
| East Rio Hondo Wsc | 25,509 | 0 (not detected) |
| City Of San Benito | 24,250 | 0 (not detected) |
| El Jardin Wsc | 9,423 | 1.81 ppb |
| Olmito Wsc | 8,952 | 0 (not detected) |
| City Of La Feria | 7,226 | 1.6 ppb |
| City Of Primera | 5,811 | 0 (not detected) |
| Valley Mud 2 Rancho Viejo | 3,644 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Los Fresnos, TX 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 City Of Los Fresnos 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. Size matters more than most people expect: small vs large water systems.