Decew Falls Water Treatment Plant - 2024 Summary Report

This report summarizes the water flows for the Decew Falls Water Treatment Plant, drinking water system number 220002066, from Jan. 1 to Dec. 31, 2024.

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

Inspection rating

The Decew Falls Water Treatment Plant was granted a 98.5 per cent inspection rating during the 2024 Ministry of Environment, Conservation and Parks annual drinking water system inspection.

Summary of non-compliance

The process wastewater discharge monitoring program and / or discharge quality did not comply with requirements established in the Municipal Drinking Water Licence.

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	1890.852	1637.639	60.995	52.827	50.035	55.569	29.410	72.437	0.824
February	1738.557	1538.100	59.950	53.038	50.031	58.956	10.393	77.346	3.382
March	1712.880	1501.499	55.254	48.435	45.827	54.791	13.990	83.129	2.385
April	1664.062	1507.668	55.469	50.256	45.444	53.601	24.027	73.338	0.911
May	1952.441	1791.031	62.982	57.775	51.358	67.723	22.643	90.495	6.417
June	1962.674	1853.426	65.422	61.781	54.380	68.764	31.676	106.828	3.859
July	2156.879	2064.094	69.577	66.584	55.586	82.125	34.044	99.364	1.604
August	2113.627	2000.995	68.182	64.548	56.439	75.879	35.375	96.541	0.520
September	1900.524	1796.558	63.351	59.885	54.766	65.365	32.869	86.270	0.737
October	1789.076	1695.099	57.712	54.681	52.074	59.422	26.772	76.769	4.683
November	1697.829	1552.852	56.594	51.762	48.614	56.123	16.023	77.449	6.331
December	1751.806	1605.814	56.510	51.800	47.161	54.202	17.550	75.200	0.607

Flow totals

Total flow raw was 22,331.207 ML
Total flow treated was 20,544.775 ML

Minimums

Minimum day treated was 45.444 ML
Minimum flow rate treated was 10.393 ML

Maximums

Maximum day treated was 82.125 ML
Maximum flow rate treated was 106.828 ML

Averages

Total average day raw was 61 ML
Total average day treated was 56.114 ML
Total waste sludge average was 88.903 ML

Comparison of actual to system approved flow

Flow rates are required by Municipal Drinking Water Licence number 007-102.

Maximum daily flow: 227.300 ML
Maximum flow rate: 227.300 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	52.827	23.22%	55.569	24.41%	72.437	31.85%
February	53.038	23.33%	58.956	25.91%	77.346	34.00%
March	48.435	21.29%	54.791	24.06%	83.129	36.55%
April	50.256	22.08%	53.601	23.58%	73.338	32.24%
May	57.775	25.38%	67.723	29.78%	90.495	39.77%
June	61.781	27.14%	68.764	30.22%	106.828	46.98%
July	66.584	29.25%	82.125	36.12%	99.364	43.68%
August	64.548	28.37%	75.879	33.34%	96.541	42.45%
September	59.885	26.30%	65.365	28.72%	86.270	37.92%
October	54.681	24.02%	59.422	26.13%	76.769	33.74%
November	51.762	22.74%	56.123	24.68%	77.449	34.05%
December	51.800	22.78%	54.202	23.84%	75.200	33.08%