Calgary water, sewer & drainage 311 requests
Water, Sewer & Drainage 311 requests filed in Calgary since January 2021.
Current release
Data through April 30, 2026
Data from January 2021 through April 30, 2026
Source data: Open data ↗
File a 311 request in Calgary → This page shows historical data only.
Total Requests
112.3K
in the water, sewer & drainage category
Latest Month
1.9K
April 2026
Share of total
4.3%
of all Calgary 311 requests
Median Resolution
9.0d
half of requests close faster
Monthly water, sewer & drainage requests
How many water, sewer & drainage 311 requests Calgary residents file each month.
How this category is defined
What counts as water, sewer & drainage: Water main breaks and leaks, sewer backups, storm drain clogs, catch basin concerns, and flooding.
In Calgary’s raw 311 data, the following 7 service_type values are counted as water, sewer & drainage:
- WATS - Catch Basin Concerns
- WATS - Service and Main Valve Issues
- WATS - Sewage Back-up
- WATS - Sewer Maintenance
- WATS - Water Main Break or Leak
- WATS - Water Meter Issues
- WATS - Water Outage
To reproduce these counts against the raw feed
SELECT count(*)
FROM <calgary_311_raw>
WHERE service_type IN (
'WATS - Catch Basin Concerns',
'WATS - Service and Main Valve Issues',
'WATS - Sewage Back-up',
'WATS - Sewer Maintenance',
'WATS - Water Main Break or Leak',
'WATS - Water Meter Issues',
'WATS - Water Outage'
)Analyst tip: Austin uses 'AW -' (Austin Water) and 'WPD -' (Watershed Protection Department) prefixes. Calgary uses 'WATS -' (Water and Sewer). NYC uses 'WATER LEAK' and 'Water System'. Baton Rouge has a broader 'ENVIRONMENTAL ISSUES' that may include non-water items — cross-check against the raw feed if precision matters.
See how water, sewer & drainage is defined for every tracked city →
Source & provenance
Counts on this page are derived from Calgary’s official open 311 data feed, covering January 2021 through April 30, 2026. Category assignment uses an AI-generated mapping from the city’s raw service types to a normalized cross-city category. View the underlying dataset at data.calgary.ca.