Toronto Property Owners: Compare Backwater Valve Quotes

Compare the published scopes first

Neither ANTA Plumbing nor RCC Waterproofing publishes an exact installation price, so compare their property-specific quotes against the same scope before comparing totals.[3][6]

RCC publishes the more detailed assessment-to-restoration workflow. ANTA publishes permit preparation, subsidy guidance and a Service Satisfaction Guarantee under which a licensed master plumber returns without charge if the customer is not completely satisfied.[3][6] ANTA’s page does not establish how long that promise applies or provide separate installation-warranty terms.[3]

Neither provider’s page confirms a deposit, payment schedule, cancellation or refund terms, or independently demonstrated performance. RCC’s page also does not state an installation warranty.[3][6] Treat these terms as unknown until they appear in the written quote or contract.

Use one installation scope for every quote

A backwater valve allows wastewater to leave while closing against reverse flow, but a fair comparison must include the work surrounding the valve.[1] Ask every provider to price the same property-specific scope:

• Diagnosis: investigate previous backups or blockages, confirm whether a valve is suitable and identify related work. Canada.ca treats this assessment as a pre-installation step.[1]
• Site and valve details: assess drainage and grading, and identify the proposed valve and installation location.[1]
• Installation: itemize permit work, excavation, pipe exposure, cutting or modification, valve placement and inspection coordination.[1][6]
• Access and restoration: include the access chamber, sealing, backfill and concrete restoration.[1][6]

Require each line to say included, excluded, allowance or not applicable. Wording such as “complete installation” does not establish who pays for difficult access, rerouting, extra excavation or another sewer line, all of which can affect installation complexity.[5]

Screen the valve against Toronto’s permit guidance

Toronto’s permit page states that a normally closed valve is prohibited in a building drain or building sewer. It says a fullport, normally open valve conforming to the appropriate CSA standard may be installed in a building drain serving only one occupancy.[2]

A normally open valve remains open for ordinary wastewater discharge and closes when backflow is detected. A normally closed valve opens in one direction when wastewater is discharged.[1] Canada Waterproofers and RCC promote normally closed products as providing “maximum protection,” but Toronto’s permit guidance presents a clear conflict for installations in a building drain or sewer.[2][4][6]

Require each quote to specify:

• the manufacturer and model;
• whether the valve is normally open or normally closed;
• the applicable CSA conformity;
• the proposed installation location; and
• confirmation that the configuration is acceptable for the Toronto permit application.

Labels such as flap-style or gate-style do not by themselves establish permit acceptance. The supplied vendor pages do not provide model-specific confirmation for a Toronto installation.[2][4][6]

Normalize the price before comparing totals

Published generic price estimates do not establish what either provider will charge for this property. Obtain site-specific, itemised CAD quotations from both bidders; compare totals only after valve design, access, excavation, inspection and restoration are specified.[3][6]

Ask each bidder to state assumptions about sewer access, obstacles, rerouting, the number of sewer lines and concrete restoration. Documented cost drivers include valve type, installation complexity, property size, labour, materials, permits, inspections and multiple or longer sewer lines.[5] Bidder-specific quantities, taxes and allowances must come from the written site quote.[3][6]

Verify credentials and commercial terms

Comparison guidance recommends checking experience, reputation, licensing and insurance, then requesting multiple quotes based on the same property information.[5] ANTA describes itself as City of Toronto licensed, but this is a provider claim. RCC says a licensed plumber must perform the installation. Neither page independently demonstrates provider performance.[3][6]

Request the applicable licence details and evidence of insurance. The contract should also state the total price and taxes, deposit, payment triggers, change-order process, cancellation or refund terms, installation and manufacturer warranties, and exclusions. The supplied ANTA and RCC pages do not confirm deposits, payment schedules, cancellation rights or installation-warranty terms.[3][6]

Assign responsibility for the permit and inspection

Toronto’s permit page provides a standalone drain-permit process for houses with one or two dwelling units and says plans are not required for those properties.[2] It directs multi-unit and non-residential applicants to separate Plumbing and Drain Permit Stand-Alone Application requirements.[2]

Require the quote to identify who will:

• prepare, submit and pay for the permit;
• respond to City questions;
• schedule and attend the inspection;
• correct deficiencies; and
• confirm inspection status before concrete restoration.

Toronto’s page lists the Application to Construct or Demolish Form and PDF document requirements. It directs applicants to use the Toronto Building Online Services Application Submission Tool.[2]

The permit schedule lists “Backwater Valves, Manholes, Catchbasins, Interceptors and Sumps Complete with Pumps” at $38.67 each, effective January 1, 2026.[2] This is a permit line item, not the total installation price.

For eligible Toronto homes, the City currently offers up to 80% of the invoiced cost for a backwater valve, capped at CAD $1,600 per device for up to two devices; eligibility, permits and inspection conditions still apply. Do not subtract a possible subsidy from a contractor quote until the City confirms that the work and property qualify.[7]

Choose the quote with fewer critical unknowns

1. Check the design: compare the exact model, configuration and location with Toronto’s permit guidance. The city’s page says normally closed valves are prohibited in a building drain or sewer.[2]
2. Confirm the site scope: require diagnosis, excavation, pipe modifications, access, sealing and concrete restoration, with exclusions identified.[1][6]
3. Assign permit and inspection work: name who obtains the permit, coordinates inspection and confirms when restoration can proceed. RCC says municipal approval occurs before concrete covering in its workflow.[6]
4. Resolve commercial terms: put the total price, payment schedule, cancellation terms, warranties and change-order rules in writing.[3][6]

Ask finalists to rewrite their quotes in the same line-item format and mark every unanswered field. Compare totals only after the scope and assumptions align.

References

1. Backwater valves – Canada.ca (canada.ca)
2. Backwater Valve – City of Toronto (toronto.ca)
3. Backwater Valve Installation Toronto – Stop Basement Flooding (antaplumbing.com)
4. Backwater Valve Installation In Toronto | Service And Repair (canadawaterproofers.com)
5. A Guide to Backwater Valve Installation (greenbuildingcanada.ca)
6. Backwater Valve Installation – RCC Waterproofing Wet Basement (rccwaterproofing.com)
7. Basement Flooding Protection Subsidy Program | City of Toronto (toronto.ca)