The Colony Mud 1b, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
About The Colony Mud 1b
The Colony Mud 1b serves about 657 people through 220 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 Bastrop County, Texas. EPA system ID: TX0110054; phone on file: 512-435-2300. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for The Colony Mud 1b is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
Against other Texas systems
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. The Colony Mud 1b's reported as 0 (not detected) sits at the 23rd percentile in Texas and the 24th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
21 other systems share Bastrop County; 10 of them have a higher latest lead result than The Colony Mud 1b. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aqua Wsc | 86,325 | 1.39 ppb |
| City Of Bastrop | 13,209 | 0 (not detected) |
| City Of Elgin | 13,188 | 0 (not detected) |
| Bastrop County Wcid 2 | 7,269 | 1.41 ppb |
| City Of Smithville | 4,901 | 0.98 ppb |
| The Colony Mud 1a | 2,262 | 0 (not detected) |
| Bastrop County Wcid 1 | 696 | 0 (not detected) |
| The Colony Mud 1e | 468 | 0.24 ppb |
| Bastrop County Mud 1 | 354 | 0.56 ppb |
| K & K Water North | 318 | 3.04 ppb |
What to do in your house
Look up your address in The Colony Mud 1b'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 The Colony Mud 1b 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.