Dallas County Mud 4, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). 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.
Dallas County Mud 4 at a glance
Dallas County Mud 4 serves about 150 people through 50 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Dallas County, Texas. EPA system ID: TX0570186; phone on file: 972-982-8461. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Dallas County Mud 4 is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
How Dallas County Mud 4 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. Dallas County Mud 4's reported as 0 (not detected) sits at the 9th percentile in Texas and the 13th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Dallas County
32 other systems share Dallas County; 14 of them have a higher latest lead result than Dallas County Mud 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dallas Water Utility | 1,356,479 | 1.09 ppb |
| City Of Irving | 264,546 | 1 ppb |
| City Of Garland | 248,822 | 1.22 ppb |
| City Of Grand Prairie | 201,843 | 1.2 ppb |
| City Of Mesquite | 158,412 | 1.05 ppb |
| City Of Carrollton | 136,170 | 0 (not detected) |
| City Of Richardson | 122,615 | 2.05 ppb |
| City Of Rowlett | 68,123 | 2.6 ppb |
| City Of Desoto | 57,999 | 0 (not detected) |
| City Of Cedar Hill | 50,904 | 0 (not detected) |
What to do in your house
Look up your address in Dallas County Mud 4'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 Dallas County Mud 4 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. A zero today does not rule out a jump later - the rules are tightening in 2027.