We have 779 parcels measured as septic in ZIP 99003 itself (Spokane County, Washington), out of 1,731 parcels in our records for this ZIP.
| 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 |
|---|---|---|---|
| Escalated Construction | Chattaroy | (509) 720-3775 | — |
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 779 parcels as septic in ZIP 99003 itself, out of 1,731 parcels in our records for this ZIP.
ZIP 99003 falls in Spokane County, Washington.