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.
These values are updated on a monthly basis and measured by a laboratory that is certified by the Ministry of the Environment and Climate Change.
| Parameter | Value | Sample Date | Range | Target in Range |
|---|---|---|---|---|
| Alkalinity | 86 mg/L | Dec. 4, 2019 | 30 - 500mg/L |  Safe and within our expected range |
| Hardness | 122 mg/L | Dec. 4, 2019 | 30 - 200mg/L | Safe and within our expected range |
| pH | 7.63 | Dec. 4, 2019 | 6.5 - 8.5 | Safe and within our expected range |
| E. Coli | Not detected | Jan. 27, 2020 | 0 counts/100mL | Safe and within our expected range |
| Total Coliforms | Not detected | Jan. 27, 2020 | 0 counts/100mL | Safe and within our expected range |
| Lead | Not detected | Nov. 6, 2019 | 0 - 0.01mg/L | Safe and within our expected range |
| Chloride | 20.2 mg/L | Dec. 4, 2019 | 0 - 250 mg/L | Safe and within our expected range |
| Sodium | 12.5 mg/L | Dec. 4, 2019 | 0 - 20mg/L | Safe and within our expected range |
| Sulphate | 29.8 mg/L | Dec. 4, 2019 | 0 - 500mg/L | Safe and within our expected range |
| Fluoride | Not detected | Dec. 4, 2019 | 0 - 1.5mg/L | Safe and within our expected range |
| Vinyl Chloride | Not detected | Nov. 6, 2019 | 0 - 0.001mg/L | Safe and within our expected range |
| Calcium | 33.9 mg/L | Dec. 4, 2019 | No current standards or guidelines for this parameter | |
| Magnesium | 9.04 mg/L | Dec. 4, 2019 | 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.
2019
2018
2017
Contact
Deanna Barrow, P.Eng.
Manager, Quality & Compliance (Water)
905-980-6000 ext. 3543
Email Deanna Barrow
© Niagara Region - 1815 Sir Isaac Brock Way, Thorold, ON, L2V 4T7 - Phone: 905-980-6000, Toll-free: 1-800-263-7215
