We have 27 parcels measured as septic in ZIP 99001 itself (Spokane County, Washington), out of 819 parcels in our records for this ZIP, of which 426 are recorded as on sewer.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Spokane County, Washington | 100% | 27 | 36,413 | 127,463 |
1 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 |
|---|---|---|---|
| Vietzke Trenchless | Airway Heights | (509) 244-9607 | 3.6 (16) |
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 measured 27 parcels as septic in ZIP 99001 itself, out of 819 parcels in our records for this ZIP.
ZIP 99001 falls in Spokane County, Washington.