Denton County Fwsd 7, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.24 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.
Who runs the water here
Denton County Fwsd 7 serves about 12,837 people through 4,279 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 Denton County, Texas. EPA system ID: TX0610228; phone on file: 940-728-5050. They can tell you what your service line is made of and whether they pay to replace it.
Denton County Fwsd 7's lead record
Against the period ending 2025 (1.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Denton County Fwsd 7 is 2.4 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.24 ppb |
| 2025 | 1.3 ppb |
| 2024 | 1.75 ppb |
| 2023 | 1.56 ppb |
| 2022 | 1.4 ppb |
| 2021 | 1.1 ppb |
| 2020 | 1.4 ppb |
| 2019 | 1.5 ppb |
| 2018 | 1.6 ppb |
| 2017 | 2.4 ppb |
| 2016 | 1.5 ppb |
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. Denton County Fwsd 7's 1.24 ppb sits at the 70th percentile in Texas and the 60th nationally (higher means more lead).
Nearby utilities
73 other systems share Denton County; 19 of them have a higher latest lead result than Denton County Fwsd 7. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Denton | 150,037 | 1.5 ppb |
| City Of Lewisville | 140,880 | 1.48 ppb |
| Mustang Sud | 127,911 | 1.33 ppb |
| Town Of Flower Mound | 80,000 | 1.6 ppb |
| City Of The Colony | 45,367 | 0.62 ppb |
| Town Of Little Elm | 43,348 | 2.17 ppb |
| City Of Corinth | 23,213 | 2.3 ppb |
| Lake Cities Municipal Utility Authority | 17,826 | 2.78 ppb |
| City Of Highland Village | 16,500 | 2.62 ppb |
| Trophy Club Mud 1 | 13,649 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Lantana, 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 Denton County Fwsd 7 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. Systems that went over once often dip back under; here is what that means.