Stella Maris, MD
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
Stella Maris at a glance
Stella Maris serves about 873 people through 2 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws surface water, in Baltimore County, Maryland. EPA system ID: MD0030212; phone on file: 410-925-4663. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stella Maris is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 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. Stella Maris's reported as 0 (not detected) sits at the 37th percentile in Maryland and the 26th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Baltimore County
6 other systems share Baltimore County; 5 of them have a higher latest lead result than Stella Maris. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Glen Meadows Retirement Community | 468 | 0 (not detected) |
| Sunnybrook | 416 | 3 ppb |
| Chapel Hill Nursing Center | 125 | 2 ppb |
| Granite Mobile Home Park | 96 | 4.4 ppb |
| Gramercy Llc (Aka Koinonia Partnership ) | 40 | 8 ppb |
| Phoenix | 31 | 2 ppb |
What to do in your house
Look up your address in Stella Maris'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 Stella Maris 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.