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
Alkalinity100 mg/LDec. 14, 202230 - 500 mg/LTarget in range Safe and within our expected range
Hardness107 mg/LDec. 14, 202230-250 mg/LTarget in range Safe and within our expected range
pH7.43 Jan. 11, 20236.5-8.5Target in range Safe and within our expected range
E. ColiNot detectedJan. 3, 20230 counts/100 mLTarget in range Safe and within our expected range
Total ColiformsNot detectedJan. 3, 20230 counts/100 mLTarget in range Safe and within our expected range
LeadNot detectedNov. 15, 20220-0.1 mg/LTarget in range Safe and within our expected range
Chloride21.7 mg/LDec. 14, 20220-250 mg/LTarget in range Safe and within our expected range
Sodium11.1 mg/LNov. 15, 20220-20 mg/LTarget in range Safe and within our expected range
Sulphate36 mg/LDec. 14, 20220-200 mg/LTarget in range Safe and within our expected range
FluorideNot detectedDec. 14, 20220-1.5 mg/LTarget in range Safe and within our expected range
Vinyl ChlorideNot detectedNov. 15, 20220-0.001 mg/LTarget in range Safe and within our expected range
Calcium29.4 mg/LDec. 14, 2022 No current standards or guidelines for this parameter
Magnesium8.06 mg/LDec. 14, 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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