WEMSIS Data and Reports

WEMSIS Home WEMSIS log-in

Active agency reporting statistics as of May 5, 2025

Overall EMS Reporting

EMS Agencies Reporting to WEMSIS - 383 (83%)

Total number of EMS Agencies - 459

Estimated total response volume captured in WEMSIS - 98%

Transport Agencies

Active Transport Agencies Reporting to WEMSIS - 287 (94%)

Total number of Active Transport Agencies - 306

Estimated transport response volume captured in WEMSIS - 99%

Non-Transport Agencies

Active non-Transport Agencies Reporting to WEMSIS - 96 (63%)

Total number of Active non-Transport Agencies - 153

Estimated non-transport response volume captured in WEMSIS - 88%

WEMSIS Reports

WEMSIS Data quality report

WEMSIS Data Quality Report

The purpose of the WEMSIS data quality report is to engage data providers and stakeholders in our efforts to improve data quality. This document provides a statewide level report on the completeness of WEMSIS data elements that the WEMSIS assessment staff has identified as priority data elements. We anticipate to update and post this completeness report on a quarterly basis so that we can monitor data quality improvement over time.

Opioid Overdose Surveillance Report

The Emergency Medical Services Opioid Overdose Surveillance Report provides monthly information on opioid related responses by ambulance and aid services who submit data to WEMSIS.

2025
2024
2023

Additional Reports

Washington State Annual EMS Opioid Reports