The Colony Mud 1d, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.88 ppb (monitoring period 2026-2026). 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.
The Colony Mud 1d at a glance
The Colony Mud 1d serves about 276 people through 92 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 groundwater, in Bastrop County, Texas. EPA system ID: TX0110056; phone on file: 512-848-1381. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
The highest 90th-percentile result EPA holds for The Colony Mud 1d is 1.88 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.88 ppb |
How The Colony Mud 1d 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. The Colony Mud 1d's 1.88 ppb sits at the 80th percentile in Texas and the 68th nationally (higher means more lead).
Neighbouring systems
21 other systems share Bastrop County; 1 of them has a higher latest lead result than The Colony Mud 1d. 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 1b | 657 | 0 (not detected) |
| The Colony Mud 1e | 468 | 0.24 ppb |
| Bastrop County Mud 1 | 354 | 0.56 ppb |
Next steps for Austin, TX
Test your own tap with a certified lab first-draw sample; Austin, 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 The Colony Mud 1d 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. The action level is dropping - the 10 ppb rule from 2027.