Water Quality Reports - Decew

The Decew Falls Water Treatment Plant provides water to St. Catharines and portion of Thorold, Lincoln and Niagara-on-the-Lake.

Current Status

The values below represent the water quality leaving the water treatment plant on the date indicated with the exception of pH which is for distribution water.

These values are updated on a monthly basis and measured by a laboratory that is certified by the Ministry of Environment, Conservation and Parks.

Parameter	Value	Sample Date	Range	Target in Range
Alkalinity	86 mg/L	Oct. 6, 2021	30 - 500 mg/L	Safe and within our expected range
Hardness	116 mg/L	Oct. 6, 2021	30-250 mg/L	Safe and within our expected range
pH	7.25	Oct. 31, 2021	6.5-8.5	Safe and within our expected range
E. Coli	Not detected	Oct. 18, 2021	0 counts/100 mL	Safe and within our expected range
Total Coliforms	Not detected	Oct. 18, 2021	0 counts/100 mL	Safe and within our expected range
Lead	Not detected	Aug. 25, 2021	0-0.1 mg/L	Safe and within our expected range
Chloride	21.2 mg/L	Oct. 6, 2021	0-250 mg/L	Safe and within our expected range
Sodium	11.8 mg/L	Aug. 25, 2021	0-20 mg/L	Safe and within our expected range
Sulphate	35.5 mg/L	Oct. 6, 2021	0-200 mg/L	Safe and within our expected range
Fluoride	Not detected	Oct. 6, 2021	0-1.5 mg/L	Safe and within our expected range
Vinyl Chloride	Not detected	Aug. 25, 2021	0-0.001 mg/L	Safe and within our expected range
Calcium	32.3 mg/L	Oct. 6, 2021		No current standards or guidelines for this parameter
Magnesium	8.7 mg/L	Oct. 6, 2021		No current standards or guidelines for this parameter

For more information about the quality of water in your local distribution system, contact your area municipality.

Reports

Under Ontario Regulation 170/03 both the Regional Municipality of Niagara and the area municipalities have the responsibility to provide Water Quality Quarterly Reports.

2020

• 2020 Annual Water Quality Report
• 2020 Summary Report

2019

• 2019 Annual Water Quality Report
• 2019 Summary Report

2018

• 2018 Annual Water Quality Report
• 2018 Summary Report

Contact

Erin Shisler
Water Process Specialist
905-980-6000 ext. 3298
Email Erin Shisler

Water

Water Quality Reports

• Decew
• Grimsby
• Niagara Falls
• Port Colborne
• Rosehill
• Welland