St. Marys Cement Inc. (Canada)

Bowmanville, ON · Organization as named in National Pollutant Release Inventory (NPRI) – facility data, 2024

Emissions (18)

Date	Record	Value	How this was linked
2024	Bowmanville Cement Plant Cement manufacturing · Bowmanville · ON · NPRI 5841 Top substances: Nitrogen oxides (expressed as nitrogen dioxide) (1,954.1 t), Carbon monoxide (712.5 t), Total particulate matter (238.1 t)	3,341.2 t	Exact normalized name + same province
2024	St. Marys Cement Plant Cement manufacturing · St. Marys · ON · NPRI 5871 Top substances: Sulphur dioxide (855.5 t), Nitrogen oxides (expressed as nitrogen dioxide) (816.9 t), Carbon monoxide (281.2 t)	2,341 t	Exact normalized name + same province
2024	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	926,880.8	Exact normalized name + same province
2024	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	487,806.3	Exact normalized name + same province
2023	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,028,212.3	Exact normalized name + same province
2023	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	574,369.6	Exact normalized name + same province
2022	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,161,425.5	Exact normalized name + same province
2022	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	540,220.5	Exact normalized name + same province
2021	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,381,115.3	Exact normalized name + same province
2021	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	551,901.2	Exact normalized name + same province
2020	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,471,590.8	Exact normalized name + same province
2020	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	528,329.1	Exact normalized name + same province
2019	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,342,658	Exact normalized name + same province
2019	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	514,224.8	Exact normalized name + same province
2018	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,521,094.4	Exact normalized name + same province
2018	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	517,986	Exact normalized name + same province
2016	Bowmanville Cement Plant Cement Manufacturing · Bowmanville · ON · NPRI 5841	1,641,586.6	Exact normalized name + same province
2016	St. Marys Cement Plant Cement Manufacturing · St. Marys · ON · NPRI 5871	547,140	Exact normalized name + same province

Source: National Pollutant Release Inventory (NPRI) – facility data, 2024 — Environment and Climate Change Canada · Licence: Open Government Licence – Canada 2.0 · retrieved 2026-10-18 · Official source ↗

Source: Greenhouse Gas Reporting Program (GHGRP) – emissions by facility, 2004–present — Environment and Climate Change Canada · Licence: Open Government Licence – Canada 2.0 · retrieved 2026-10-18 · Official source ↗

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