We have 42 parcels measured as septic in ZIP 99203 itself (Spokane County, Washington), out of 540 parcels in our records for this ZIP, of which 382 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 |
|---|---|---|---|
| Quality Excavation | Spokane | (509) 413-7731 | — |
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 42 parcels as septic in ZIP 99203 itself, out of 540 parcels in our records for this ZIP.
ZIP 99203 falls in Spokane County, Washington.