The Annual Water Quality Report summarizes the quality of drinking water from the Decew Falls Water Treatment Plant from January 1 to December 31, 2018.
The Niagara Falls Water Treatment Plant Summary Report is available for inspection.
A conventional surface water treatment plant incorporates the following steps in its purification process:
The plant has a rated daily flow capacity of 145,475m3/day. Primary disinfection is achieved through utilizing sodium hypochlorite and ultraviolet light as enhancement.
The Niagara Falls Water Treatment Plant supplies water to the City of Niagara Falls, parts of the City of Thorold and parts of Town of Niagara-on-the-Lake. The Niagara Falls Water Treatment Plant is located at 3599 Macklem Street, Niagara Falls, Ontario.
The water treatment chemicals used over this reporting period are:
|Incident Date||Parameter||Result||Unit of Measure||Corrective Action||Corrective Action Date|
|June 20, 2018||Total Coliforms||1||CFU/100 ml||Resample. Resample results within regulatory limits||June 22, 2018|
To ensure safe and efficient operations, the following major repairs or upgrade projects took place:
Starting in 2018, reported units of measure have been updated to match the units of measure included within Ontario Regulation 169/03 - Ontario Drinking Water Quality Standards.
Reported results that are shown with a less than symbol (<) before the value indicates that the sample result is below the lowest possible detection limit for the parameter.
Total Coliform and E.coli bacteria tests are performed on raw, treated and distributed drinking water.
Microbiological testing done under the Schedule 10, 11 or 12 of Regulation 170/03, during this reporting period.
|Test||Number of Samples||Range of E.Coli or Fecal Results (minimum number)-(maximum number)||Range of Total Coliform Results (minimum number)-(maximum number)||Number of HPC* Samples||Range of HPC Results (minimum number)-(maximum number)|
|Raw||52||0-80||0-8,100||Not applicable||Not applicable|
*HPC (heterotrophic plate count) bacteria indicate biological growth. They are not harmful to humans and do not represent poor drinking water quality.
Operational testing done under Schedule 7, 8 or 9 of Regulation 170/03 during the period covered by this Annual Report.
|Test||Number of Samples||Range of Results (minimum number)-(maximum number)|
*NTU (nephelometric turbidity units) is a unit that measures the lack of water clarity.
An analyzer continuously monitors the water treatment process and records results on a predetermined frequency. Continuous monitors use 8760 as the number of samples.
Summary of additional testing and sampling carried out in accordance with the requirement of an approval, order or other legal instrument.
|Date of legal instrument issued||Parameter||Date Sampled||Result||Unit of Measure|
|Municipal Drinking Water Licence: January 12, 2017||Total Suspended Solids (to environment)||Monthly Annual Average||10.0||mg/L|
Inorganic substances include heavy metals and dissolved minerals that may be present in treated drinking water. The following is a summary of inorganic parameters tested or the most recent sample results.
|Parameter||Sample Date||Result Value||Unit of Measure||Exceedance|
|Antimony||Nov. 5, 2018||<0.0005||mg/L||0|
|Arsenic||Nov. 5, 2018||<0.001||mg/L||0|
|Barium||Nov. 5, 2018||0.017||mg/L||0|
|Boron||Nov. 5, 2018||0.017||mg/L||0|
|Cadmium||Nov. 5, 2018||<0.0001||mg/L||0|
|Chromium||Nov. 5, 2018||<0.001||mg/L||0|
|Mercury||Nov. 5, 2018||<0. 0001||mg/L||0|
|Selenium||Nov. 5, 2018||<0.0005||mg/L||0|
|Sodium||Dec. 3, 2018||9.3||mg/L||0|
|Uranium||Nov. 5, 2018||<0.001||mg/L||0|
|Fluoride||Dec. 3, 2018||0.048||mg/L||0|
|Nitrite||Dec. 3, 2018||<0.008||mg/L||0|
|Nitrate||Dec. 3, 2018||0.19||mg/L||0|
*Only for drinking water systems testing under Schedule 15.2; this includes large municipal non-residential systems, small municipal non-residential systems, non-municipal seasonal residential systems, large non-municipal non-residential systems, and small non-municipal non-residential systems.
Summary of lead testing under Schedule 15.1 during this reporting period
(applicable to the following drinking water systems; large municipal residential systems, small municipal residential systems, and non-municipal year-round residential systems)
|Location Type||Number of Samples||Range of Lead Results (min to max)||Unit of Measure||Exceedance|
|Plumbing||4||0 - <0.0001||mg/L||0|
|Distribution||4||0 - <0.0001||mg/L||0|
Trace organic test parameters include: volatile organic substances, pesticides, solvents, dioxins, PCB's, and disinfection by-products. The following is a summary of organic parameters tested or the most recent sample results.
|Parameter||Sample Date||Result Value||Unit of Measure||Exceedance|
|Alachlor||Nov. 5, 2018||<0.000236||mg/L||0|
|Atrazine + N-dealkylated metobolites||Nov. 5, 2018||<0.0005||mg/L||0|
|Azinphos-methyl||Nov. 5, 2018||<0.000177||mg/L||0|
|Benzene||Nov. 5, 2018||<0.0001||mg/L||0|
|Benzo(a)pyrene||Nov. 5, 2018||<0.000005||mg/L||0|
|Bromoxynil||Nov. 5, 2018||<0.000104||mg/L||0|
|Carbaryl||Nov. 5, 2018||<0.001||mg/L||0|
|Carbofuran||Nov. 5, 2018||<0.001||mg/L||0|
|Carbon Tetrachloride||Nov. 5, 2018||<0.0002||mg/L||0|
|Chlorpyrifos||Nov. 5, 2018||<0.000177||mg/L||0|
|Diazinon||Nov. 5, 2018||<0.000177||mg/L||0|
|Dicamba||Nov. 5, 2018||<0.000091||mg/L||0|
|1,2-Dichlorobenzene||Nov. 5, 2018||<0.0002||mg/L||0|
|1,4-Dichlorobenzene||Nov. 5, 2018||<0.0003||mg/L||0|
|1,2-Dichloroethane||Nov. 5, 2018||<0.0002||mg/L||0|
|1,1-Dichloroethylene (vinylidene chloride)||Nov. 5, 2018||<0.0003||mg/L||0|
|Dichloromethane||Nov. 5, 2018||<0.0002||mg/L||0|
|2-4 Dichlorophenol||Nov. 5, 2018||<0.00039||mg/L||0|
|2,4-Dichlorophenoxy acetic acid (2,4-D)||Nov. 5, 2018||<0.001||mg/L||0|
|Diclofop-methyl||Nov. 5, 2018||<0.00013||mg/L||0|
|Dimethoate||Nov. 5, 2018||<0.000177||mg/L||0|
|Diquat||Nov. 5, 2018||<0.002||mg/L||0|
|Diuron||Nov. 5, 2018||<0.006||mg/L||0|
|Glyphosate||Nov. 5, 2018||<0.02||mg/L||0|
|HAA||Running annual average||14.6*||mg/L|
|Malathion||Nov. 5, 2018||<0.000177||mg/L||0|
|2-Methyl-4-chlorophenoxyacetic acid (MPCA)||Nov. 5, 2018||<0.0065||mg/L||0|
|Metolachlor||Nov. 5, 2018||<0.000188||mg/L||0|
|Metribuzin||Nov. 5, 2018||<0.000188||mg/L||0|
|Monochlorobenzene||Nov. 5, 2018||<0.0005||mg/L||0|
|Paraquat||Nov. 5, 2018||<0.005||mg/L||0|
|Pentachlorophenol||Nov. 5, 2018||<0.0003||mg/L||0|
|Phorate||Nov. 5, 2018||<0.000118||mg/L||0|
|Picloram||Nov. 5, 2018||<0.00026||mg/L||0|
|Polychlorinated Biphenyls(PCB)||Nov. 5, 2018||<0.00006||mg/L||0|
|Prometryne||Nov. 5, 2018||<0.0000589||mg/L||0|
|Simazine||Nov. 5, 2018||<0.000177||mg/L||0|
|THM||Running annual average||0.027*||mg/L||0|
|Terbufos||Nov. 5, 2018||<0.000118||mg/L||0|
|Tetrachloroethylene||Nov. 5, 2018||<0.0003||mg/L||0|
|2,3,4,6-Tetrachlorophenol||Nov. 5, 2018||<0.0002||mg/L||0|
|Triallate||Nov. 5, 2018||<0.000118||mg/L||0|
|Trichloroethylene||Nov. 5, 2018||<0.0002||mg/L||0|
|2,4,6-Trichlorophenol||Nov. 5, 2018||<0.0002||mg/L||0|
|Trifluralin||Nov. 5, 2018||<0.000118||mg/L||0|
|Vinyl Chloride||Nov. 5, 2018||<0.0001||mg/L||0|
*The maximum distribution sample point running annual average (calculated in the last quarter of 2018) was used for this report.
At no time did inorganic or organic parameters exceed half the standard prescribed in Schedule 2 of Ontario Drinking Water Quality Standards.