Welland Water Treatment Plant - 2024 Summary Report

This report summarizes the water flows for the Welland Water Treatment Plant, drinking water system number 220002048, from Jan. 1 to Dec. 31, 2024.

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 2024 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)
January	735.870	716.270	23.738	23.131	20.610	26.498	23.739	46.050	33.358
February	691.390	673.211	23.841	23.240	21.524	25.640	23.331	43.237	32.494
March	728.810	699.361	23.510	22.588	19.800	27.414	26.550	42.650	47.409
April	697.860	677.804	23.262	22.618	20.150	24.316	25.269	43.025	36.027
May	795.430	772.673	25.659	24.953	22.272	30.268	20.827	43.269	51.862
June	836.350	814.931	27.878	27.197	22.760	39.100	22.277	49.340	65.666
July	888.530	870.594	55.456	28.121	23.244	33.326	15.613	43.062	30.324
August	879.680	850.967	28.377	27.490	24.040	34.248	19.320	43.069	41.670
September	808.560	785.332	26.952	26.208	22.944	29.320	25.962	43.356	34.596
October	771.850	756.820	24.898	24.438	21.212	27.164	24.056	43.088	23.174
November	713.650	694.207	23.788	23.164	18.852	27.536	13.525	43.138	26.988
December	783.190	762.662	25.264	24.625	21.080	29.092	22.006	43.413	29.894

Flow totals

Total flow raw was 9331.170 ML
Total flow treated was 9074.831 ML
Total waste sludge was 453.462 ML

Minimums

Minimum day treated was 18.852 ML
Minimum flow rate treated was 13.525 ML
Total waste sludge minimum was 23.174 ML

Maximums

Maximum day treated was 39.100 ML
Maximum flow rate treated was 49.340 ML
Total waste sludge maximum was 453.462 ML

Averages

Total average day raw was 27.719 ML
Total average day treated was 24.815 ML
Total waste sludge average was 37.789 ML

Comparison of actual to system approved flow

Flow rates are required by Municipal Drinking Water Licence number 007-104.

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
January	23.131	35.58%	26.498	40.75%	46.050	70.84%
February	23.240	35.75%	25.640	39.44%	43.237	66.50%
March	22.588	34.73%	27.414	42.16%	42.650	65.61%
April	22.618	34.78%	24.316	37.40%	43.025	66.18%
May	24.953	38.38%	30.268	46.55%	43.269	66.55%
June	27.197	41.83%	39.100	60.15%	49.340	75.90%
July	28.121	43.26%	33.326	51.26%	43.062	66.24%
August	27.490	42.29%	34.248	52.67%	43.069	66.24%
September	26.208	40.30%	29.320	45.10%	43.356	66.69%
October	24.438	37.58%	27.164	41.78%	43.088	66.27%
November	23.164	35.63%	27.536	42.35%	43.138	66.35%
December	24.625	37.87%	29.092	44.75%	43.413	66.78%