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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.

ParameterValueSample DateRangeTarget in Range
Alkalinity90 mg/LApril 13, 202230 - 500 mg/LTarget in range Safe and within our expected range
Hardness126 mg/LApril 13, 202230-250 mg/LTarget in range Safe and within our expected range
pH7.41 April 26, 20226.5-8.5Target in range Safe and within our expected range
E. ColiNot detectedApril 19, 20220 counts/100 mLTarget in range Safe and within our expected range
Total ColiformsNot detectedApril 19, 20220 counts/100 mLTarget in range Safe and within our expected range
LeadNot detectedNov. 17, 20210-0.1 mg/LTarget in range Safe and within our expected range
Chloride21.5 mg/LApril 13, 20220-250 mg/LTarget in range Safe and within our expected range
Sodium11.3 mg/LNov. 17, 20210-20 mg/LTarget in range Safe and within our expected range
Sulphate33.7 mg/LApril 13, 20220-200 mg/LTarget in range Safe and within our expected range
FluorideNot detectedApril 13, 20220-1.5 mg/LTarget in range Safe and within our expected range
Vinyl ChlorideNot detectedNov. 17, 20210-0.001 mg/LTarget in range Safe and within our expected range
Calcium36.7 mg/LApril 13, 2022 No current standards or guidelines for this parameter
Magnesium8.44 mg/LApril 13, 2022 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.

2021

2020

2019

Contact

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

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