ZIP 98391 falls in Pierce County, Washington, where we hold 200,696 parcels measured as septic county-wide. We do not have a per-ZIP parcel count for this county, so this is the county total, not a count specific to ZIP 98391.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Pierce County, Washington | 100% | 172,075 | 200,696 | — |
6 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 |
|---|---|---|---|
| Bosco Septic & Sewer | Bonney Lake | (253) 777-5995 | 5.0 (1) |
| Bosco Septic & Sewer | Sumner | (253) 777-5995 | 5.0 (1) |
| STI Septic Service | Bonney Lake | (425) 306-1666 | 5.0 (1) |
| Class Act Septic & Excavation | Bonney Lake | (253) 392-5460 | — |
| Bosco Septic & Sewer | Bonney Lake | (360) 324-9982 | — |
| BOSCO Septic & Sewer LLC | Bonney Lake | (206) 251-6900 | — |
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 hold 200,696 parcels measured as septic for Pierce County, Washington as a whole, not broken out by ZIP.
ZIP 98391 falls in Pierce County, Washington.