City Of Red Oak, TX
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
City Of Red Oak at a glance
City Of Red Oak serves about 18,577 people through 4,832 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Ellis County, Texas. EPA system ID: TX0700031; phone on file: 972-617-6831. 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 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Red Oak is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 1.1 ppb |
| 2017 | 2 ppb |
Where this result ranks
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. City Of Red Oak's reported as 0 (not detected) sits at the 48th percentile in Texas and the 38th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
23 other systems share Ellis County; 7 of them have a higher latest lead result than City Of Red Oak. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Waxahachie | 50,814 | 0 (not detected) |
| Rockett Sud | 46,614 | 0 (not detected) |
| City Of Midlothian | 27,699 | 1.68 ppb |
| Mountain Peak Sud | 25,302 | 1.98 ppb |
| City Of Ennis | 24,891 | 0 (not detected) |
| Sardis Lone Elm Wsc | 20,736 | 1.4 ppb |
| Buena Vista Bethel Sud | 8,218 | 0 (not detected) |
| City Of Ovilla | 4,532 | 0 (not detected) |
| City Of Ferris | 4,204 | 3.4 ppb |
| City Of Palmer | 3,015 | 0 (not detected) |
What to do in your house
Look up your address in City Of Red Oak'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 City Of Red Oak 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. Small systems behave differently: why small systems go over more often.