City Of Aberdeen, MD
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About City Of Aberdeen
City Of Aberdeen serves about 18,006 people through 5,542 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 Harford County, Maryland. EPA system ID: MD0120001; phone on file: 410-272-2650. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
City Of Aberdeen's lead record
Against the period ending 2020 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Aberdeen is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
Where this result ranks
Of the 437 Maryland systems with a lead result, the median latest reading is 0 ppb; 3 are over 15 ppb right now and 21 have gone over at some point. City Of Aberdeen's reported as 0 (not detected) sits at the 48th percentile in Maryland and the 38th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Harford County
15 other systems share Harford County; 8 of them have a higher latest lead result than City Of Aberdeen. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Harford County D.P.W. | 104,567 | 0 (not detected) |
| Chapel Hill - Aberdeen Proving Grounds | 15,000 | 0 (not detected) |
| City Of Havre De Grace | 14,000 | 2 ppb |
| Maryland American Water Company | 13,200 | 2 ppb |
| Md American Water Greenridge | 2,351 | 0 (not detected) |
| Swan Harbour Dell Mobile Home Park | 500 | 6 ppb |
| Campus Hills Water Works | 250 | 2.4 ppb |
| Town Of Darlington | 250 | 0 (not detected) |
| Md American Water Lakeside Vista | 226 | 0 (not detected) |
| R & R Estates | 96 | 1.1 ppb |
Your move
Look up your address in City Of Aberdeen'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 City Of Aberdeen 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. Small systems behave differently: why small systems go over more often.