Data Updates

The Maine Tracking Network is ever-evolving. This page highlights the data portal topics we updated from 2019 to present.

  • Annual update refers to a scheduled update that may include new years of data, new measures (e.g., hospitalizations, emergency department visits), new display types (e.g., near real-time, trend-charts), or even new data portal topics.

  • Erratum refers to an identified data discrepancy. For an explanation of what took place and if changes in procedures were needed and added, please refer to the Details column.

Please email us at or fill out the Contact Us form with any questions or comments.

Date Data Portal Topic Type of Update Details
05/07/2021 Tickborne Diseases Annual Update and New Display 2019 and 2020 incidence data for anaplasmosis, babesiosis, and Lyme disease. New near real-time dashboard with weekly counts of emergency department visits for tick exposures.
03/03/2021 Private Well Water Annual Update 2017 household survey data about homes on well water and testing behavior
01/31/2021 Cold-Related Illness New Content Area Hospital and emergency department visit data from 2001-2018 and a near real-time dashboard updated daily.
01/22/2021 Childhood Lead Poisoning Annual Update 2019 lead poisoning and lead screening data
10/29/2020 Childhood Lead Poisoning New Display New enhanced maps for Maine's six high-risk areas for lead poisoning.
07/13/2020 Public Water Supply New Display New system-level summaries of data about arsenic, disinfection by-products and nitrates/nitrites.
02/25/2020 COPD Annual Update 2016 and 2017 emergency department and hospitalization data.
02/04/2020 Childhood Lead Poisoning Annual Update 2018 lead poisoning, lead screening, poverty, and pre-1950 housing data.
01/16/2020 Tickborne Diseases New Display Near real-time tab with preliminary totals for tickborne diseases in 2019.
01/09/2020 Radon  New Content Area Summary levels from more than 57,000 radon in air test results available at the town, county, and state level, as well as eight years of household survey data about testing, levels above normal, and whether those levels were fixed.
01/09/2020 Birth Defects Annual Update 2016 and 2017 prevalence rates.
10/02/2019 Acute Myocardial Infarction Annual Update 2014 and 2016 hospitalization data and town-level data.
05/07/2019 Tickborne Diseases Annual Update 2018 incidence data for anaplasmosis, babesiosis, and Lyme disease.
05/07/2019 Heat Illness Annual Update 2012-2017 emergency department and hospitalization data and 2014 data about homes with air conditioning.
02/10/2019 Private Well Water Erratum The table display for county-level water quality data with Column Options "Multiple Analytes" was updated incorrectly in June 2018. Data values were doubled due to a one-time database conversion issue. The error did not affect any other tables, charts, or maps displays, and all other data are correct. This error was identified on February 10, 2019, and resolved immediately.
 01/26/2019 Childhood Lead Poisoning Annual Update 2017 lead poisoning, lead screening, poverty, and pre-1950 housing data.