Southern Oaks Water Supply, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 3.08 ppb (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. 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.
About Southern Oaks Water Supply
Southern Oaks Water Supply serves about 2,304 people through 768 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Freestone County, Texas. EPA system ID: TX0810034. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is up 3.08 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Southern Oaks Water Supply is 3.08 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.08 ppb |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
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. Southern Oaks Water Supply's 3.08 ppb sits at the 91st percentile in Texas and the 83rd nationally (higher means more lead).
Neighbouring systems
19 other systems share Freestone County; 2 of them have a higher latest lead result than Southern Oaks Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Teague | 5,688 | 5.03 ppb |
| South Freestone County Wsc | 3,753 | 0 (not detected) |
| City Of Fairfield | 3,005 | 2.58 ppb |
| Butler Wsc | 1,842 | 0 (not detected) |
| Pleasant Grove Wsc | 1,839 | 0.4 ppb |
| City Of Fairfield Boyd Unit | 1,690 | 2.39 ppb |
| City Of Fairfield Westwood Utility | 1,563 | 1.38 ppb |
| City Of Wortham | 980 | 0 (not detected) |
| City Of Streetman | 573 | 0 (not detected) |
| City Of Kirvin | 549 | 7 ppb |
Next steps for Texas
Test your own tap with a certified lab first-draw sample; your state 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 Southern Oaks Water Supply 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.