Town Of Sunnyvale, TX
Exceeded the action level in the past
Latest 90th-percentile lead: 2.22 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Town Of Sunnyvale
Town Of Sunnyvale serves about 8,839 people through 3,348 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Dallas County, Texas. EPA system ID: TX0570059; phone on file: 972-226-7177. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Town Of Sunnyvale's lead record
Against the period ending 2024 (1.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Town Of Sunnyvale is 43.29 ppb across 11 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.22 ppb |
| 2024 | 1.7 ppb |
| 2023 | 1.85 ppb |
| 2022 | 2.14 ppb |
| 2022 | 1.77 ppb |
| 2021 | 43.29 ppb over 15 |
| 2020 | 1.68 ppb |
| 2019 | 0.98 ppb |
| 2018 | 1.12 ppb |
| 2017 | 1.34 ppb |
| 2016 | 2.82 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. Town Of Sunnyvale's 2.22 ppb sits at the 85th percentile in Texas and the 75th nationally (higher means more lead).
Nearby utilities
32 other systems share Dallas County; 2 of them have a higher latest lead result than Town Of Sunnyvale. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dallas Water Utility | 1,356,479 | 1.09 ppb |
| City Of Irving | 264,546 | 1 ppb |
| City Of Garland | 248,822 | 1.22 ppb |
| City Of Grand Prairie | 201,843 | 1.2 ppb |
| City Of Mesquite | 158,412 | 1.05 ppb |
| City Of Carrollton | 136,170 | 0 (not detected) |
| City Of Richardson | 122,615 | 2.05 ppb |
| City Of Rowlett | 68,123 | 2.6 ppb |
| City Of Desoto | 57,999 | 0 (not detected) |
| City Of Cedar Hill | 50,904 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Sunnyvale, 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 Town Of Sunnyvale 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. Why an old exceedance still matters: over the limit before, under it now.