East Medina County Sud Unit 3, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Who runs the water here
East Medina County Sud Unit 3 serves about 1,365 people through 455 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Medina County, Texas. EPA system ID: TX1630030; phone on file: 830-709-3879. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
East Medina County Sud Unit 3's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for East Medina County Sud Unit 3 is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
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. East Medina County Sud Unit 3's reported as 0 (not detected) sits at the 30th percentile in Texas and the 28th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
27 other systems share Medina County; 18 of them have a higher latest lead result than East Medina County Sud Unit 3. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Benton City Wsc | 32,000 | 0.7 ppb |
| Yancey Wsc | 12,186 | 3.5 ppb |
| City Of Hondo | 11,044 | 1.4 ppb |
| East Medina County Sud Unit 1 | 6,153 | 0.8 ppb |
| City Of Devine | 4,335 | 0.8 ppb |
| City Of Castroville | 3,913 | 7.2 ppb |
| East Medina County Sud Unit 2 | 2,505 | 0.7 ppb |
| West Medina Wsc | 1,683 | 0.5 ppb |
| City Of La Coste | 1,488 | 4.6 ppb |
| City Of Natalia | 1,336 | 0 (not detected) |
What to do in your house
Look up your address in East Medina County Sud Unit 3'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 East Medina County Sud Unit 3 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. Small systems behave differently: why small systems go over more often.