Calvert Manor, MD
Lead detected, under the action levels
Latest 90th-percentile lead: 0.8 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.
Calvert Manor at a glance
Calvert Manor serves about 300 people through 93 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Prince George'S County, Maryland. EPA system ID: MD0160004; phone on file: 301-292-9499. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2020 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Calvert Manor is 0.8 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.8 ppb |
| 2020 | 0 (not detected) |
| 2017 | 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. Calvert Manor's 0.8 ppb sits at the 55th percentile in Maryland and the 48th nationally (higher means more lead).
Other water systems in Prince George'S County
3 other systems share Prince George'S County; 1 of them has a higher latest lead result than Calvert Manor. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Bowie | 25,000 | 0 (not detected) |
| Cedarville Mobile Home Park | 780 | 1.5 ppb |
| Cheltenham Boys Village | 330 | 0 (not detected) |
Next steps for Accokeek, MD
Test your own tap with a certified lab first-draw sample; Accokeek, 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 Calvert Manor 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.