Grimsby Water Treatment Plant - 2021 Summary Report

This report summarizes the water flows for the Grimsby Water Treatment Plant, drinking water system number 22000715, from Jan. 1 to Dec. 31, 2021.

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

Summary of non-compliance

The Grimsby 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.	354.617	401.412	11.439	12.970	9.421	12.496	6.462	18.085	0.568
Feb.	344.335	384.032	12.298	13.738	10.473	15.320	7.344	19.135	0.421
March	344.335	420.905	12.298	13.604	10.356	13.381	3.655	18.537	0.611
April	344.335	406.680	12.207	13.578	10.275	13.881	7.287	18.776	0.690
May	529.449	548.862	17.079	17.731	10.798	26.289	5.304	32.916	2.035
June	542.048	563.054	18.068	18.790	14.342	23.187	4.569	31.376	0.637
July	482.017	508.860	15.549	16.434	10.446	21.967	9.348	27.458	0.632
Aug.	584.020	598.168	18.839	19.317	12.313	24.669	10.159	30.231	0.805
Sept.	419.781	448.926	13.993	14.984	10.986	20.160	9.304	23.110	0.915
Oct.	368.375	398.957	11.883	12.892	10.449	15.945	8.451	21.147	2.133
Nov.	325.752	398.957	10.858	12.364	9.084	12.264	7.402	17.166	0.670
Dec.	329.650	377.945	10.634	12.211	8.847	12.324	7.139	16.999	0.556

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 5024.616 ML
Total flow treated was 5428.166 ML
Total waste sludge was 10.673 ML

Minimums

Minimum day treated was 8.847 ML
Minimum flow rate treated was 3.655 ML
Total waste sludge minimum was 0.421 ML

Maximums

Maximum day treated was 26.289 ML
Maximum flow rate treated was 32.916 ML
Total waste sludge maximum was 2.133 ML

Averages

Total flow treated average was 452.347 ML
Total average day raw was 13.754 ML
Total average day treated was 14.884 ML
Total waste sludge average was 0.889 ML

Comparison of actual to system approved flow

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

Maximum daily flow: 44.000 ML
Maximum flow rate: 44.000 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.	12.970	29.5%	12.496	28.4%	18.085	41.1%
Feb.	13.738	31.2%	15.320	34.8%	19.135	43.5%
March	13.604	30.9%	13.381	30.4%	18.537	42.1%
April	13.578	30.9%	13.881	31.5%	18.776	42.7%
May	17.731	40.3%	26.289	59.7%	32.916	74.8%
June	18.790	42.7%	23.187	52.7%	31.376	71.3%
July	16.434	37.4%	21.967	49.9%	27.458	62.4%
Aug.	19.317	43.9%	24.669	56.1%	30.231	68.7%
Sept.	14.984	34.1%	20.160	45.8%	23.110	52.5%
Oct.	12.892	29.3%	15.945	36.2%	21.147	48.1%
Nov.	12.364	28.1%	12.264	27.9%	17.166	39.0%
Dec.	12.211	27.8%	12.324	28.0%	16.999	38.6%