Decew Falls Water Treatment Plant - 2021 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, 2021.

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

Summary of non-compliance

The Decew Falls 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.	1562.895	1355.839	50.416	43.737	44.509	57.904	15.690	100.496	3.64
Feb.	1454.699	1252.320	51.954	44.726	44.764	55.042	20.413	96.853	3.77
March	1644.981	1420.821	53.064	45.833	49.267	57.201	13.900	73.007	0.95
April	1571.244	1376.492	52.375	45.883	49.405	56.137	16.459	76.941	6.68
May	1955.482	1705.115	63.080	55.004	51.139	84.013	21.424	94.649	6.24
June	1993.705	1777.053	66.457	59.235	58.630	75.612	33.117	89.311	4.84
July	1978.259	1748.107	63.815	56.391	57.153	72.644	30.997	87.551	0.87
Aug.	2249.079	2002.685	72.551	64.603	57.824	84.170	34.533	103.122	1.08
Sept.	1845.196	1641.084	61.507	54.703	51.642	69.753	25.718	86.602	3.25
Oct.	1696.181	1514.971	54.716	48.870	47.322	59.399	20.326	78.197	2.78
Nov.	1554.811	1374.951	51.827	45.832	46.823	56.986	15.862	83.160	3.25
Dec.	1598.227	1381.280	51.556	44.557	47.622	58.788	21.689	67.872	3.90

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 21104.759 ML
Total flow treated was 18550.718 ML
Total waste sludge was 41.259 ML

Minimums

Minimum day treated was 44.509 ML
Minimum flow rate treated was 13.900 ML
Total waste sludge minimum was 0.867 ML

Maximums

Maximum day treated was 84.170 ML
Maximum flow rate treated was 103.1220 ML
Total waste sludge maximum was 0.867 ML

Averages

Total flow treated average was 1545.893 ML
Total average day raw was 57.776 ML
Total average day treated was 50.781 ML
Total waste sludge average was 0.867 ML

Comparison of actual to system approved flow

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

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
Jan.	43.737	19.2%	57.904	25.5%	100.496	44.2%
Feb.	44.726	19.7%	55.042	24.2%	96.853	42.6%
March	45.833	20.2%	57.201	25.2%	73.007	32.1%
April	45.883	20.2%	56.137	24.7%	76.941	33.8%
May	55.004	24.2%	84.013	37.0%	94.649	41.6%
June	59.235	26.1%	75.612	33.3%	89.311	39.3%
July	56.391	24.8%	72.644	32.0%	87.551	38.5%
Aug.	64.603	28.4%	84.170	37.0%	103.122	45.4%
Sept.	54.703	24.1%	69.753	30.7%	86.602	38.1%
Oct.	48.870	21.5%	59.399	26.1%	78.197	34.4%
Nov.	45.832	20.2%	56.986	25.1%	83.160	36.6%
Dec.	44.557	19.6%	58.788	25.9%	67.872	29.9%