Grimsby Water Treatment Plant - 2023 Summary Report

This report summarizes the water flows for the Grimsby Water Treatment Plant, drinking water system number 220007150, from Jan. 1 to Dec. 31, 2023.

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 2023 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.	408.500	383.422	13.177	12.419	11.214	13.185	8.038	16.610	0.780
Feb.	377.672	354.863	13.488	12.725	11.564	13.636	0.000	17.396	0.650
March	418.207	393.170	13.491	12.739	11.127	13.901	6.827	17.729	1.734
April	429.002	405.694	14.300	13.582	12.058	16.328	7.034	19.563	0.694
May	535.168	510.889	17.263	16.541	12.515	21.840	9.598	28.007	1.691
June	576.842	554.178	19.228	18.528	15.214	25.348	4.018	31.477	0.780
July	538.196	514.122	17.361	16.639	12.644	19.354	10.687	24.176	1.431
Aug.	490.550	468.830	15.824	15.174	12.541	17.483	9.783	22.357	0.780
Sept.	496.795	476.944	16.560	15.941	10.478	17.680	0.000	20.676	0.694
Oct.	467.477	443.585	15.080	14.353	11.977	17.741	8.150	22.605	1.908
Nov.	431.786	408.539	14.393	13.663	11.947	15.754	6.955	37.502	1.604
Dec.	423.150	399.348	13.650	12.929	11.765	14.264	8.341	20.092	0.867

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 5,593.345 ML
Total flow treated was 5,313.584 ML
Total waste sludge was 13.615 ML

Minimums

Minimum day treated was 10.478 ML
Minimum flow rate treated was 0.000 ML
Total waste sludge minimum was 0.650 ML

Maximums

Maximum day treated was 25.348 ML
Maximum flow rate treated was 31.477 ML
Total waste sludge maximum was 1.908 ML

Averages

Total average day raw was 15.318 ML
Total average day treated was 14.603 ML
Total waste sludge average was 1.135 ML

Comparison of actual to system approved flow

Flow rates are required by Municipal Drinking Water Licence number 007-105.

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.	12.419	28.2%	13.185	29.9%	16.610	37.7%
Feb.	12.725	28.9%	13.636	30.9%	17.396	39.5%
March	12.739	28.9%	13.901	31.5%	17.729	40.2%
April	13.582	30.8%	16.328	37.1%	19.563	44.4%
May	16.541	37.5%	21.840	49.6%	28.007	63.6%
June	18.528	42.1%	25.348	57.6%	31.477	71.5%
July	16.639	37.8%	19.354	43.9%	24.176	54.9%
Aug.	15.174	34.4%	17.483	39.7%	22.357	50.8%
Sept.	15.941	36.2%	17.680	40.1%	20.676	46.9%
Oct.	14.353	32.6%	17.741	40.3%	22.605	51.3%
Nov.	13.663	31.0%	15.754	35.8%	37.502	85.2%
Dec.	12.929	29.3%	14.264	32.4%	20.092	45.6%