Arlington County - Willston Area, VA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 ppb (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. 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.
Arlington County - Willston Area at a glance
Arlington County - Willston Area serves about 1,352 people through 313 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Arlington County, Virginia. EPA system ID: VA6013500; phone on file: 703-228-7612. 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 2022 (1.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Arlington County - Willston Area is 1.4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.6 ppb |
| 2022 | 1.4 ppb |
| 2020 | 1.1 ppb |
| 2019 | 1.3 ppb |
| 2017 | 0.7 ppb |
How Arlington County - Willston Area 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. Arlington County - Willston Area's 0.6 ppb sits at the 54th percentile in Virginia and the 45th nationally (higher means more lead).
Other water systems in Arlington County
1 other system shares Arlington County; 0 of them have a higher latest lead result than Arlington County - Willston Area. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Arlington County | 215,000 | 0.6 ppb |
Next steps for Arlington, VA
Test your own tap with a certified lab first-draw sample; Arlington, VA 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 Arlington County - Willston Area 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. Systems that went over once often dip back under; here is what that means.