Dale City, VA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 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.
Dale City at a glance
Dale City serves about 72,062 people through 20,895 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws surface water, in Prince William County, Virginia. EPA system ID: VA6153625; phone on file: 703-517-1056. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Dale City is 1 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 1 ppb |
How Dale City compares
Of the 996 Virginia systems with a lead result, the median latest reading is 0 ppb; 3 are over 15 ppb right now and 59 have gone over at some point. Dale City's reported as 0 (not detected) sits at the 49th percentile in Virginia and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Prince William County
10 other systems share Prince William County; 4 of them have a higher latest lead result than Dale City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pwcsa - East | 168,747 | 0 (not detected) |
| Pwcsa - West | 136,409 | 0 (not detected) |
| Mcb Quantico - Mainside | 19,000 | 1.98 ppb |
| Quantico Mcb-Camp Barrett | 8,689 | 3.8 ppb |
| Bull Run Mountain/Evergreen (Brme) | 1,803 | 2.27 ppb |
| Quantico, Town Of | 650 | 0 (not detected) |
| Linton Hall School | 350 | 0 (not detected) |
| Woodbridge Mhp Llc | 320 | 7.3 ppb |
| Pwcsa - Hoadly Manor | 207 | 0 (not detected) |
| Pwcsa - Carters Grove | 105 | 0 (not detected) |
Next steps for Woodbridge, VA
Look up your address in Dale City'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 Dale City 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.