Welland Water Treatment Plant - 2022 Summary Report

This report summarizes the water flows for the Welland Water Treatment Plant, drinking water system number 220002066, from Jan. 1 to Dec. 31, 2022.

This report satisfies the requirements of Ontario Regulation 170/03 - Drinking Water Systems.

Inspection rating

The Welland Water Treatment Plant was granted a 100 per cent inspection rating during the 2022 Ministry of Environment, Conservation and Parks annual drinking water system inspection.

Summary of non-compliance

The Welland Water Treatment Plant was operated in such a way that at no time did it fail to meet or exceed the requirements of the Safe Drinking Water Act, associated regulations, the system's approval or any order that may have been issued for this reporting period.

Summary of water treatment plant flows

The flow rates captured below are moments in time, and can be affected by various circumstances, such as pump changes or valve position. It is not unusual to have higher or lower than normal flows for this reason.

Month Total flow raw (ML) Total flow treated (ML) Average day raw (ML) Average day treated (ML) Minimum day treated (ML) Maximum day treated (ML) Minimum flow rate treated (ML/d) Maximum flow rate treated (ML/d) Total waste sludge (ML)
Jan. 791.900 745.639 25.545 24.093 19.603 27.312 18.032 58.523 57.420
Feb. 715.520 679.868 25.554 24.328 22.014 26.843 20.870 43.288 44.375
March 769.730 719.873 24.830 23.245 20.677 26.336 15.412 45.112 60.372
April 705.150 660.543 23.505 22.041 19.378 24.093 18.854 43.306 52.409
May 781.760 745.013 25.218 24.060 20.560 28.798 15.196 45.825 62.247
June 811.900 27.063 15.169 26.059 22.472 31.659 20.916 43.362 42.262
July 915.390 875.502 29.529 28.295 20.252 35.353 25.057 44.831 52.547
Aug. 895.790 853.648 28.896 27.580 23.226 32.320 21.395 43.100 56.998
Sept. 770.180 721.169 25.673 24.073 20.883 26.942 20.458 45.825 62.830
Oct. 728.050 684.388 23.485 22.104 19.490 25.736 20.371 42.862 53.148
Nov. 670.280 650.627 21.717 11.329 19.436 24.032 21.704 42.819 27.229
Dec. 735.810 701.296 23.736 22.655 20.924 24.196 23.130 46.994 39.483

The flow rates are moments in time, and can be affected by various circumstances, such as pump changes or valve position and therefore not unusual to have higher or lower than normal flows.

Flow totals

  • Total flow raw was 9291.460 ML
  • Total flow treated was 8818.289 ML
  • Total waste sludge was 611.320 ML

Minimums

  • Minimum day treated was 19.378 ML
  • Minimum flow rate treated was 15.196 ML
  • Total waste sludge minimum was 27.229 ML

Maximums

  • Maximum day treated was 35.353 ML
  • Maximum flow rate treated was 58.523 ML
  • Total waste sludge maximum was 62.830 ML

Averages

  • Total average day raw was 25.448 ML
  • Total average day treated was 24.188 ML
  • Total waste sludge average was 50.943 ML

Comparison of actual to system approved flow

Flow rates are required by Municipal Drinking Water Licence number 007-202.

Maximum daily flow: 65.000 ML
Maximum flow rate: 65.000 ML/day

Month Average day treated (ML) Per cent of average day treated rated capacity Maximum day treated (ML) Per cent of maximum day treated rated capacity Maximum flow rate treated (ML/d) Per cent of maximum flow rate rated capacity
Jan. 24.093 37% 27.312 30% 58.523 89%
Feb. 24.328 37% 26.843 34% 43.288 66%
March 23.245 36% 26.336 32% 45.112 68%
April 22.041 34% 24.093 30% 43.306 66%
May 24.060 37% 28.798 32% 45.825 69%
June 26.059 40% 31.659 35% 43.362 66%
July 28.295 44% 35.353 31% 44.831 68%
Aug. 27.580 42% 32.320 36% 43.100 65%
Sept. 24.073 37% 26.942 32% 45.825 69%
Oct. 22.104 34% 25.736 30% 42.862 65%
Nov. 21.717 33% 24.032 30% 42.819 65%
Dec. 22.655 35% 24.196 32% 46.994 71%
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