Aransas County Mud 1, TX
Exceeded the action level in the past
Latest 90th-percentile lead: 3.49 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Aransas County Mud 1 at a glance
Aransas County Mud 1 serves about 615 people through 210 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 Aransas County, Texas. EPA system ID: TX0040042; phone on file: 361-729-5922. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 1.31 ppb from 4.8 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Aransas County Mud 1 is 16 ppb across 3 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.49 ppb |
| 2022 | 4.8 ppb |
| 2019 | 16 ppb over 15 |
How Aransas County Mud 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. Aransas County Mud 1's 3.49 ppb sits at the 93rd percentile in Texas and the 85th nationally (higher means more lead).
Other water systems in Aransas County
4 other systems share Aransas County; 0 of them have a higher latest lead result than Aransas County Mud 1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Rockport | 11,186 | 3.42 ppb |
| Holiday Beach Wsc | 2,553 | 0.77 ppb |
| Lamar Improvement District | 450 | 0.56 ppb |
| Sunset Bay | 123 | 0.96 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Rockport, 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 Aransas County Mud 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. What a 90th-percentile result does and does not tell you: how to read a lead result. More in what a past exceedance means today.