East Medina County Sud Unit 1, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 0.8 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.
About East Medina County Sud Unit 1
East Medina County Sud Unit 1 serves about 6,153 people through 2,051 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 groundwater, in Medina County, Texas. EPA system ID: TX1630010; phone on file: 830-709-3879. 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 2023 (1.52 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for East Medina County Sud Unit 1 is 5.5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.8 ppb |
| 2023 | 1.52 ppb |
| 2020 | 1.7 ppb |
| 2017 | 3.1 ppb |
| 2016 | 5.5 ppb |
How East Medina County Sud Unit 1 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. East Medina County Sud Unit 1's 0.8 ppb sits at the 60th percentile in Texas and the 48th nationally (higher means more lead).
Neighbouring systems
27 other systems share Medina County; 10 of them have a higher latest lead result than East Medina County Sud Unit 1. 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 |
| 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 |
| East Medina County Sud Unit 3 | 1,365 | 0 (not detected) |
| City Of Natalia | 1,336 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Devine, 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 East Medina County Sud Unit 1 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. Systems that went over once often dip back under; here is what that means.