Wastewater System - Ingersoll
The County maintains a diverse portfolio of assets that are required to provide the community of Ingersoll with the safe collection and treatment of wastewater. The Ingersoll Wastewater Treatment Plant (WWTP) provides wastewater treatment for residential, commercial, and industrial users in the Town of Ingersoll. The Ingersoll WWTP also provides treatment for septic tank waste, hauled waste, holding tank waste, and landfill leachate from within the County.
The wastewater collection network transports residential, commercial, and industrial waste to the WWTP for treatment. The wastewater collection network consists of a mix of gravity mains, low pressure mains and forcemains. Wastewater flows by gravity wherever possible, where changing elevations require the use of sewage pumping stations (SPS). Other specialized structures such as manholes, valve vaults, meter stations, diversion structures and siphons are required to convey wastewater to the WWTP.
Inventory
| Asset Component | Unit | Current Inventory | Replacement Costs |
| Wastewater Treatment Plant | site | 1 | $30,487,535 |
| Sanitary Pumping Station | bldg | 2 | 494,163 |
| Other Facilities | bldg | 2 | 266,497 |
| Equipment | total | N/A | 19,055,484 |
| Sanitary Main (﹥=450mm) | metre | 8,215 | 13,021,231 |
| Sanitary Main (﹤450mm) | metre | 93,609 | 69,826,967 |
| Sanitary Service Connection | each | 5,295 | 24,293,460 |
| Total Replacement Cost | $157,445,337 | ||
The replacement cost valuation for the linear assets in this portfolio are based on current tender prices, where available. The replacement cost valuation for vertical assets is based on the latest information available, which includes current replacement costs, insurance valuations, inflation, and valuations from studies and assessments completed in prior years.
Condition
The assessment approach for our wastewater assets utilizes a combination of physical assessments, asset attributes, such as material and sizing, as well as established anticipated useful lives.
The percentage of assets in poor or critical condition has decreased from 19% as reported in the 2022 AMP to 17%. The percentage of assets in good or excellent condition has essentially remained unchanged at 62%. As assets continue to age their condition rating will decline until lifecycle strategies are triggered and completed.
Key Performance
| Key Service Attribute | LOS Statement | Performance Measure | 2022 | 2023 | Target |
| Reliability | Providing wastewater services with minimal interruptions | % of properties within the system boundary connected to the municipal wastewater system | 96% | 97% | TBD |
| The number of connection-days per year due to wastewater backups compared to the total number of properties connected to the municipal wastewater system. | 2 connection-days to 6,325 connections | 1 connection-day to 6,460 connections | TBD | ||
| Environmental Stewardship | Providing wastewater services that have minimal impacts on the environment | The number of effluent violations per year due to wastewater discharge compared to the total number of properties connected to the municipal wastewater system. | 1 violation to 6,325 connections | 1 violation to 6,460 connections | 0 |
Funding Gap Analysis
This portfolio is currently funded through an annual contribution to the Wastewater - Ingersoll reserve, by wastewater rates in Ingersoll, along with an annual allocation of interest earned.
The graph illustrates the anticipated asset management needs (expenditures) and anticipated funding for the 10-year period of 2024-2033, reflecting an approximate $17.7 million surplus in funding availability over the period.
The projected lifecycle needs suggest that minimal linear replacements are required within the 2024 to 2033 period as the oldest installation date related to sanitary mains currently populated in the asset management systems is 1940. Over the next few years County staff will work to incorporate CCTV condition ratings into the County’s asset management systems. Once incorporated, the projected lifecycle needs will be more reflective of the actual state of linear assets. Linear sanitary projects within the 2024 to 2033 period included in the County’s 2024 long-term capital plan, above the value of the projected linear lifecycle needs, have been incorporated into the projected non-lifecycle needs.
In accordance with the Water and Wastewater Rates Policy, the annual contribution to reserve should increase annually with inflation.