Trihalomethane (THMs) Levels in Public Water Supplies of Newfoundland and Labrador

The purpose of this report is to assess the status of THMs in provincial public water supplies and compare the results with the national guideline. It also serves as a progress report for the THM monitoring program in the province by identifying any data gaps and future monitoring needs. Additionally, the report outlines a future course of action that will be taken to reduce the amounts of THMs in public water supplies.

Report Cover

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Executive Summary (40 KB)
Acknowledgments (5 KB)
Table of Contents (15 KB)
Chapter 1.0 Introduction (10 KB)
Chapter 2.0 Disinfection By-Products (164 KB)
Chapter 3.0 Public Water Supplies and THM Monitoring Program (411 KB)
Chapter 4.0 Data Analysis and Discussion (3 MB)
Chapter 5.0 Preventative/Mitigative Measures (116 KB)
Chapter 6.0 Future Direction (10 KB)
Chapter 7.0 Conclusions/Recommendations (19 KB)
Chapter 8.0 References (8 KB)
Appendix A Communities with Surface Water Supplies in the Province (43 KB)
Appendix B THM Formation Potential of Surface Water Supplies in the Province (749 KB)
Appendix C Solicitation Letter for THM Monitoring Program (2000) (210 KB)
Appendix D THM Sampling Protocol and Field Sheet (1.1 MB)
Appendix E THM Database Forms and Community Report (1.3 MB)
Appendix F THM Data Printout (648 KB)
Appendix G Seasonal Data Gaps (38 KB)
Appendix H Summary of THM Data (37 KB)
Appendix I THM Data (Bromoform and Dibromochloromethane) (30 KB)
Appendix J Development of THM Guidelines (1 MB)
Report Cover Page (776 KB)

The analysis presented in this report is based on THM data collected during the period of Jan 1st, 1996 to Dec 31st, 1999.

For up to date data on THM levels go to the Trihalomethanes Data page.

Disclaimer: The official version of this document rests with the Department.

For additional information on drinking water quality or any other water resources related topics please contact us.

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