← Back to Blog•Reading water reports•October 18, 2026

Edmonton's monthly and annual water reports answer different questions

Thick teal binder and thin ochre folder beside a blank-grid calendar, glass and pencil.
Generated illustration of report folders and a calendar. The invented covers and calendar carry no EPCOR report, reporting date or water test.AI-generated editorial artwork; not source documents or measured samples.

Edmonton's monthly water reports let you inspect a shorter period and more specific tables than an annual overview alone. EPCOR separates monthly bacteriological summaries, parameter summaries and detailed quality/operations reports from the annual quality/operations report. Browse the drinking-water report series.

Choose the report for the question before copying a number. A monthly mean, a year-to-date range and a sampling target describe different things, even when they appear beside one another. These reports cover August 2026 and the 2025 annual programme; none is a measurement taken at a visitor's tap today.

A month keeps the sequence visible

The detailed August 2026 report has day-by-day tables as well as monthly minimum, maximum and average rows. It keeps raw North Saskatchewan River water separate from treated water entering distribution. Open the August quality/operations report.

That structure lets you locate a day within the month and keep its treatment boundary attached. A raw-water entry answers a source-water question. It should not be copied into a description of finished drinking water, even when the date matches. The annual report's broader period cannot replace those daily labels when you are asking about a particular August entry.

The monthly report also includes a notation guide. It explains D as daily, M as monthly and Q as quarterly, and identifies hardness as a calcium-carbonate equivalent. See the same report's notation page. Read the row's own frequency and unit instead of assuming every parameter follows the schedule of the row above it.

Open blank lined notebook, unnumbered calendar, ochre folder and water glass.
Generated illustration of a notebook and desk calendar. The empty rows show no monitoring frequency, measured trend or Edmonton result.AI-generated editorial illustration; not a monthly report or test record.

Compare the sampling boundary as well as the date

The shorter August parameter summary places monthly counts, means and ranges alongside year-to-date columns. Its alkalinity count is 62, while its aluminum count is 2. Read the August parameter summary.

Those are separate parameter counts within that report, not a count of households served or proof that every parameter was tested daily. Keep the parameter name with the count and distinguish the monthly column from the year-to-date column. Comparing two figures only because they occupy similar positions on different pages can lose the period or sample boundary.

The bacteriological summary separates plant, reservoir and distribution entries. Its distribution section records 251 bacteriological tests against a target of 210 for August 2026. The total-coliform presence/absence range includes positive and negative results. Read both pages of the August bacteriological summary.

A count above a sampling target describes coverage against that target. It does not mean every result passed, or identify which accommodation was sampled. Read organism-specific rows and the report's location labels before drawing a conclusion from a headline count.

Two separate glass bottles with blank tags and a closed teal folder before an invented river view.
Generated illustration of keeping sampling locations separate. The bottles are invented props and contain no actual collected Edmonton samples or test results.AI-generated conceptual artwork; not a laboratory photograph or source survey.

Check whether the target changed

EPCOR's 2025 distribution-system section gives monthly sampling targets of 195 for January to March and 210 for April to December. Read the 2025 annual report, section 8.4.

Keep each target with its stated months. The annual history explains that a denominator changed during 2025; the August 2026 summary supplies its own later target. Neither should be silently applied to every month in another year. A meaningful comparison starts with the same sample category and an explicit period.

These documents were checked on 15 October 2026, with unknown publication dates kept separate from their reporting periods. Their presence in an archive supplies no current advisory status. For visitor context, use the Edmonton city guide; for an instruction affecting your stay, check its actual area and update using the water-notice guide.

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