Holland Forest, MD
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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 Holland Forest
Holland Forest serves about 139 people through 51 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in St. Mary'S County, Maryland. EPA system ID: MD0180051; phone on file: 240-925-3139. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Holland Forest is 2.7 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 2.7 ppb |
How Holland Forest compares
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. Holland Forest's reported as 0 (not detected) sits at the 14th percentile in Maryland and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in St. Mary'S County
36 other systems share St. Mary'S County; 5 of them have a higher latest lead result than Holland Forest. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lexington Park | 43,030 | 0 (not detected) |
| Patuxent Naval Air Station (Navfac-Wash) | 22,000 | 0 (not detected) |
| Town Of Leonardtown | 5,000 | 0 (not detected) |
| Country Lakes | 3,016 | 0 (not detected) |
| Cedar Cove | 2,728 | 0 (not detected) |
| Saint Marys College | 2,200 | 0 (not detected) |
| Wicomico Shores | 1,262 | 0 (not detected) |
| Greenbrier | 1,161 | 0 (not detected) |
| Breton Bay | 1,012 | 0 (not detected) |
| Lord Calvert Trailer Park | 892 | 0 (not detected) |
Next steps for California, MD
Look up your address in Holland Forest'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 Holland Forest 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.