Thunderbird Apartments, MD
Lead detected, under the action levels
Latest 90th-percentile lead: 4.9 ppb (monitoring period 2026-2026). 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
Thunderbird Apartments serves about 40 people through 2 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Charles County, Maryland. EPA system ID: MD1080029; phone on file: 301-645-2696. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 2.5 ppb from 2.4 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Thunderbird Apartments is 4.9 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 4.9 ppb |
| 2025 | 2.4 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | -5 ppb |
| 2016 | -5 ppb |
| 2016 | 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. Thunderbird Apartments's 4.9 ppb sits at the 91st percentile in Maryland and the 90th nationally (higher means more lead).
Nearby utilities
48 other systems share Charles County; 2 of them have a higher latest lead result than Thunderbird Apartments. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Waldorf - Charles County Dpw | 84,296 | 0 (not detected) |
| Town Of La Plata | 11,535 | 0 (not detected) |
| Bryans Road | 6,260 | 0 (not detected) |
| Town Of Indian Head | 4,100 | 0 (not detected) |
| Naval Support Facility, Indian Head | 3,321 | 5.7 ppb |
| Potomac Heights | 1,800 | 0 (not detected) |
| Swan Point | 945 | 0 (not detected) |
| Cliffton On The Potomac | 744 | 0 (not detected) |
| Hunters Brooke/Falcon Ridge Subd | 614 | 0 (not detected) |
| Charles County Gardens Water | 551 | 1.8 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Waldorf, MD 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 Thunderbird Apartments 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. The action level is dropping - the 10 ppb rule from 2027.