Rosehill Water Treatment Plant - 2015 Summary Report

Prepared under Ontario Regulation 107/03

The Rosehill Water Treatment Plant was operated in such a way that it met or exceeded the requirements of the Act, the regulation, the system’s approval or any order that may have been issued for this reporting period with the following exception:

During the Ministry Environment and Climate Change (MOECC) inspection of the Rosehill Water Treatment Plant, Niagara was found to be in non-compliance with Section 13 (1) 2 of O. Reg. 170/03 which requires the retention of records for at least two years.

In October 2015, an action plan was submitted to the MOECC which contained the following corrective actions:

  • SCADA programming/permission changes to prevent inadvertent enabling or disabling the associated alarm tag(s);
  • A worksheet/checklist to be developed by SCADA technicians to minimize or mitigate issues during SCADA upgrades;
  • A review of all alarm/event logs was conducted at all six water treatment plants, including the review of iHistorian data; and
  • Prepare and submit a proposal for modifications to regulatory relief for consideration by the MOECC.

Summary of Flows

Date Total Flow Raw (ML) Total Flow Treated (ML) Average Day Raw (ML) Average Day Treated (ML) Maximum Day Treated (ML) Minimum Day Treated (ML) Maximum Flow Rate Treated (ML/d) Minimum Flow Rate Treated (ML/d) Waste Sludge (ML)
January 396.019 362.478 12.775 11.693 12.792 10.84 16.171 4.684 9.68
February 395.709 365.709 14.132 13.061 15.334 11.33 20.718 0.001 4.537
March 426.029 390.947 13.743 12.611 14.408 11.565 18.829 6.103 7.19
April 393.78 357.152 13.126 11.905 12.838 11.026 16.803 4.769 10.629
May 472.756 430.687 15.25 13.893 15.86 11.683 26.154 5.487 5.083
June 435.99 399.852 14.533 13.328 15.17 12.311 23.094 7.094 6.895
July 501.259 463.551 16.17 14.953 17.491 12.904 29.231 6.41 6.579
August 510.475 472.868 16.467 15.254 17.596 13.598 26.53 7.949 6.91
September 465.001 430.749 15.5 14.358 17.576 12.168 26.615 0.924 10.56
October 428.304 392.14 13.816 12.65 13.19 11.723 19.573 1.349 5.813
November 406.226 365.69 13.541 12.19 12.796 11.684 23.829 0.001 7.998
December 416.614 381.064 13.439 12.292 14.522 11.031 31.077 5.829 5.185
Total 5,248.16 4,812.89 87.059
Minimum 10.84 0.001 4.537
Maximum 17.596 31.077 10.629
Average 14.374 13.182 7.255

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.

Comparison of Actual to System Approved Flow

Flow rates as set in the Municipal Drinking Water Licence # 007-103 and Drinking Water Works Permit # 007-203.

Maximum daily flow: 50 ML
Maximum flow rate: 50 ML/day

Date Average Day Treated (ML) % of Rated Capacity Maximum Day Treated (ML) % of Rated Capacity Maximum Flow Rate Treated (ML/d) % of Rated Capacity
January 11.693 23.40% 12.792 25.60% 16.171 32.30%
February 13.061 26.10% 15.334 30.70% 20.718 41.40%
March 12.611 25.20% 14.408 28.80% 18.829 37.70%
April 11.905 23.80% 12.838 25.70% 16.803 33.60%
May 13.893 27.80% 15.86 31.70% 26.154 52.30%
June 13.328 26.70% 15.17 30.30% 23.094 46.20%
July 14.953 29.90% 17.491 35.00% 29.231 58.50%
August 15.254 30.50% 17.596 35.20% 26.53 53.10%
September 14.358 28.70% 17.576 35.20% 26.615 53.20%
October 1.20 0.02 13.19 26.40% 19.573 39.10%
November 12.19 24.40% 12.796 25.60% 23.829 47.70%
December 12.292 24.60% 14.522 29.00% 31.077 62.20%

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