Backflow testing in Oshawa

Oshawa’s building stock, from a backflow point of view

Oshawa is the largest municipality in Durham and the one with the widest spread of property types, which means the widest spread of devices. In rough order of how often they turn up:

• Multi-residential. Central and south Oshawa have a lot of walk-ups and mid-rise rentals from the 1960s and 1970s, plus newer towers downtown and condo stock in the north. Every building over six units is in the program. Most have a DCVA on the domestic service; the ones with boiler plants also have an RPZ on the make-up line. See the apartments and condos page.
• Downtown commercial. Offices, restaurants, bars, the courthouse district, and the newer developments around the university and college downtown campuses. Restaurants and bars carry RPZs; offices usually a DCVA. After-hours slots are the norm downtown.
• Health and education. Lakeridge Health Oshawa and the medical and dental offices clustered around it are severe hazard, RPZ territory. The Ontario Tech, Durham College and Trent Durham campuses have institutional facilities departments that manage their own compliance; the plazas, restaurants and student housing that serve them are the ones that call us. See medical and dental and institutional.
• Industrial. Along the 401 corridor, Simcoe Street South, Farewell Street, and the newer Northwood Business Park up by the 407 and the airport. Multiple devices per site is normal: process, boiler, wash bay, domestic. See the industrial page.
• Retail plazas along Simcoe, King, Taunton and Harmony, with a landlord’s premise device and often tenant devices in restaurants and salons.

The one thing every Oshawa owner should know

The rule is Regional. By-law 24-2018 was passed by Durham Regional Council, the notice comes from BSI Online on the Region’s behalf, and the report goes back through BSI to the Region. Some search results describe an “Oshawa backflow program” as though the city runs it. It does not, and treating it that way leads people to look for the wrong contact. If you have a notice, the notice page explains it; if you want to know what the test involves, how it works does.

Water context

Oshawa is served by Regional water from the Lake Ontario water supply plant in the city (the Region lists Ajax, Whitby, Oshawa, Bowmanville and Newcastle as its lakeshore plants). All of it is Regional supply under the by-law. A property in the rural north of the city on a private well only is outside the program; a property with both a well and a Regional connection is inside it, with the well counted as an auxiliary supply.

Scheduling in Oshawa

Because there is so much building stock in a compact area, Oshawa gets visits most weeks and a day can cover several buildings without much driving. Practical patterns:

Building type	Usual slot
Downtown restaurants and bars	Before open or after close
Offices and clinics near the hospital	Early morning, before staff and patients
Apartment and condo buildings	Mid-morning or early afternoon on a weekday, super notified
Industrial along the 401	Between shifts, or a planned outage
Plazas	Landlord’s premise device and tenant devices on one visit

If your notice’s due date is close, say so. Oshawa is on the route often enough that a tight date can usually be met.

Older buildings and older devices

The age of central Oshawa’s stock shows up in mechanical rooms. Things that come up more here than in newer towns: shut-off valves that have not been turned in a decade, devices tucked behind later renovations, RPZs installed in pits before the standard ruled that out, and occasionally a non-testable device on the service. None of that stops the annual test from being arranged; it changes what the tester finds and what gets flagged for the owner. We tell you plainly, and repairs or corrections go to a licensed plumber.

What it costs and what you get

Per device, per property, with the $25 BSI filing fee included and the report submitted for you within the by-law’s 28-day window. Tag on the device, report copy for your five-year file, filing confirmation, and a reminder 30 days before next year. The cost page explains what moves the number.