City Of Duncanville, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2021-2023). 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
City Of Duncanville serves about 39,413 people through 14,684 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 Dallas County, Texas. EPA system ID: TX0570007; phone on file: 469-616-8368. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 1.1 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for City Of Duncanville is 2.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.1 ppb |
| 2020 | 0 (not detected) |
| 2017 | 2.6 ppb |
How City Of Duncanville 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. City Of Duncanville's 1.1 ppb sits at the 67th percentile in Texas and the 58th nationally (higher means more lead).
Other water systems in Dallas County
32 other systems share Dallas County; 10 of them have a higher latest lead result than City Of Duncanville. 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; Duncanville, 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 City Of Duncanville 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. Systems that went over once often dip back under; here is what that means.