Grimsby Water Treatment Plant - 2022 Summary Report

This report summarizes the water flows for the Grimsby 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 Grimsby 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 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.	359.524	394.444	11.598	12.742	8.563	13.917	0.000	18.802	1.041
Feb.	352.367	366.824	12.585	13.121	10.733	14.614	7.751	17.986	0.262
March	411.480	380.885	13.274	12.721	11.015	17.297	6.982	18.219	1.691
April	418.153	389.809	13.938	13.039	12.423	15.796	0.574	18.913	0.607
May	499.819	476.156	16.123	15.409	13.409	21.272	6.991	27.544	0.997
June	568.562	543.011	18.952	18.150	14.141	24.648	0.000	30.376	1.691
July	651.669	628.695	21.022	20.328	16.649	25.322	0.000	30.757	0.607
Aug.	590.206	567.245	19.039	18.349	15.222	22.686	3.199	26.201	0.780
Sept.	486.591	465.565	16.220	15.568	12.909	21.810	8.198	25.845	0.737
Oct.	447.134	420.798	14.424	13.626	12.207	16.494	0.000	20.930	2.688
Nov.	410.249	385.949	13.675	12.917	11.892	15.296	8.111	18.510	0.564
Dec.	410.134	385.799	13.230	12.496	11.948	14.505	6.458	17.104	0.654

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 5,605.888 ML
Total flow treated was 5,405.180 ML
Total waste sludge was 12.320 ML

Minimums

Minimum day treated was 8.563 ML
Minimum flow rate treated was 0.000 ML
Total waste sludge minimum was 0.262 ML

Maximums

Maximum day treated was 25.322 ML
Maximum flow rate treated was 30.757 ML
Total waste sludge maximum was 2.688 ML

Averages

Total average day raw was 15.340 ML
Total average day treated was 14.872 ML
Total waste sludge average was 1.027 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%	8.563	19%	18.802	43%
Feb.	13.738	31.2%	10.733	24%	17.986	41%
March	13.604	30.9%	11.015	25%	18.219	41%
April	13.578	30.9%	12.423	28%	18.913	43%
May	17.731	40.3%	13.409	30%	27.544	63%
June	18.790	42.7%	14.141	32%	30.376	69%
July	16.434	37.4%	16.649	38%	30.757	70%
Aug.	19.317	43.9%	15.222	35%	26.201	60%
Sept.	14.984	34.1%	12.909	29%	25.845	59%
Oct.	12.892	29.3%	12.207	28%	20.930	48%
Nov.	12.364	28.1%	11.892	27%	18.510	42%
Dec.	12.211	27.8%	11.948	27%	17.104	39%