ZIP 21108 falls in Anne Arundel County, Maryland, where we hold 1 septic-related documents. We have not classified septic-versus-sewer status for this county, and we do not have a per-ZIP parcel count -- see the county page for what we hold and where the records are kept.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Anne Arundel County, Maryland | 100% | 1 | — | — |
5 businesses on record with an address in this ZIP: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | City | Phone | Rating |
|---|---|---|---|
| Billings Outback Septic | Millersville | (410) 923-2500 | 5.0 (7) |
| RJ's Septic Service | Millersville | (410) 923-1465 | 5.0 (3) |
| R J'S Plumbing & Heating | Millersville | (410) 969-1977 | 4.0 (4) |
| Robert F Beall & Sons | Millersville | (410) 987-0970 | 3.7 (9) |
| Stormwater Facilities | Millersville | (410) 923-2084 | — |
Land-area overlap is from the 2020 Census Bureau ZCTA5-to-county relationship file, not an estimate of ours. Parcel and document counts are rows we hold, not a survey of every property in the ZIP. Last verified 2026-09-01.
We have not measured septic-versus-sewer status for this county yet.
ZIP 21108 falls in Anne Arundel County, Maryland.