City Of Mercedes, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 3.74 ppb (monitoring period 2023-2025). 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.
City Of Mercedes at a glance
City Of Mercedes serves about 16,258 people through 6,061 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 surface water, in Hidalgo County, Texas. EPA system ID: TX1080007; phone on file: 956-565-3114. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2022 (3.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Mercedes is 8.7 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.74 ppb |
| 2022 | 3.2 ppb |
| 2021 | 8.7 ppb |
| 2020 | 7.2 ppb |
| 2017 | 4.5 ppb |
How City Of Mercedes compares
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 Mercedes's 3.74 ppb sits at the 94th percentile in Texas and the 86th nationally (higher means more lead).
Nearby utilities
23 other systems share Hidalgo County; 0 of them have a higher latest lead result than City Of Mercedes. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| North Alamo Wsc | 171,195 | 0.32 ppb |
| Mcallen Public Utility | 145,050 | 2.3 ppb |
| City Of Edinburg | 85,224 | 0 (not detected) |
| City Of Pharr | 79,715 | 1.09 ppb |
| City Of Mission | 77,058 | 1.83 ppb |
| Sharyland Wsc | 68,562 | 1 ppb |
| Agua Sud | 53,796 | 1 ppb |
| City Of Weslaco | 40,033 | 1.5 ppb |
| City Of San Juan | 30,000 | 0 (not detected) |
| City Of Alamo | 21,065 | 1 ppb |
Next steps for Mercedes, TX
Test your own tap with a certified lab first-draw sample; Mercedes, 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 Mercedes 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.