Port Colborne Water Treatment Plant - 2025 Summary Report

This report summarizes the water flows for the Port Colborne Water Treatment Plant, drinking water system number 220002075, from Jan. 1 to Dec. 31, 2025.

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

Inspection rating

The Port Colborne Water Treatment Plant was granted a 100 per cent inspection rating during the 2025-2026 Ministry of Environment, Conservation and Parks annual drinking water system inspection.

Summary of non-compliance

The Port Colborne 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 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 daily treated (ML)	Minimum flow rate treated (ML/d)	Maximum flow rate treated (ML/d)	Total waste sludge (ML)
January	318.570	308.193	10.276	9.942	6.790	14.090	7.610	17.108	1.587
February	320.798	309.332	11.457	11.048	8.997	13.010	5.518	15.046	1.910
March	339.272	326.445	10.944	10.530	8.540	13.320	7.867	27.309	2.198
April	283.930	274.370	9.464	9.146	7.380	11.100	5.651	17.231	1.971
May	282.422	264.924	9.110	8.546	6.658	9.920	7.882	27.014	1.767
June	279.148	266.416	9.305	8.881	7.135	10.550	7.979	17.908	1.517
July	279.460	266.170	9.015	8.586	6.665	10.597	7.364	17.210	2.344
August	257.200	240.610	8.297	7.762	5.910	9.973	6.789	19.631	2.088
September	231.850	220.160	7.728	7.339	5.650	8.980	5.979	20.088	2.002
October	244.860	230.540	7.899	7.437	6.099	8.973	7.566	17.338	1.752
November	262.750	244.190	8.758	8.140	6.280	10.615	8.059	26.753	1.674
December	253.940	237.270	8.192	7.654	5.530	9.900	6.756	17.755	1.278

Flow totals

Total flow raw was 3354.200 ML
Total flow treated was 3188.620 ML
Total waste sludge was 22.088 ML

Minimums

Minimum day treated was 5.530 ML
Minimum flow rate treated was 5.518 ML/day
Total waste sludge minimum was 1.278 ML

Maximums

Maximum day treated was 14.090 ML
Maximum flow rate treated was 27.309 ML/day
Total waste sludge maximum was 2.344 ML

Averages

Total average day raw was 9.204 ML
Total average day treated was 8.751 ML
Total waste sludge average was 1.841 ML

Comparison of actual to system approved flow

Flow rates are required by Municipal Drinking Water Licence number 007-101.

Maximum daily flow: 36.000 ML
Maximum flow rate: 36.000 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
January	9.942	28%	14.090	39%	17.108	48%
February	11.048	31%	13.010	36%	15.046	42%
March	10.530	29%	13.320	37%	27.309	76%
April	9.146	25%	11.100	31%	17.231	48%
May	8.546	24%	9.920	28%	27.014	75%
June	8.881	25%	10.550	29%	17.908	50%
July	8.586	24%	10.597	29%	17.210	48%
August	7.762	22%	9.973	28%	19.631	55%
September	7.339	20%	8.980	25%	20.088	56%
October	7.437	21%	8.973	25%	17.338	48%
November	8.140	23%	10.615	29%	26.753	74%
December	7.654	21%	9.900	28%	17.755	49%