Stormwater treatment devices are designed to protect our waterways, but like any piece of infrastructure, they only work effectively when they’re well-maintained. A system that isn’t performing puts you at risk of non-compliance, costly repairs, and reduced water quality outcomes.
We often hear the question: “How do I know if my stormwater system needs attention?” Here are five tell-tale signs it’s time to schedule a maintenance inspection.
1. Sediment Build-Up
If you notice sediment accumulating at inlets, forebays, or treatment chambers, it’s a clear sign that your system is working, but also that it’s reaching capacity. Excess sediment reduces flow, limits treatment performance, and increases the risk of blockages during heavy rainfall.
2. Standing Water of Poor Drainage
Stormwater systems are designed to convey and treat flows efficiently. If water is ponding for extended periods or draining slowly, there could be a blockage or hydraulic restriction. This is more than a nuisance; it can compromise the treatment process and create safety hazards.
3. Visible Litter and Debris
Trash and gross pollutants that aren’t being captured, or that are visible overflowing from catch basins and treatment devices - signal that your system is overdue for a clean. Regular removal keeps your device compliant with stormwater regulations and prevents downstream pollution.
4. Vegetation Overgrowth or Decline
For systems that incorporate bioretention or green infrastructure, vegetation health is a key indicator of performance. Overgrowth, invasive weeds, or declining plants can all point to a need for maintenance. Healthy vegetation ensures both hydraulic performance and pollutant removal efficiency.
5. Odour or Unpleasant Discharge
Any foul smell, oily sheen, or discoloured discharge at outlets is a red flag. It suggests that contaminants are bypassing treatment, and your system is no longer protecting downstream environments as intended.
Why Proactive Maintenance Matters
Ignoring these signs can lead to escalating costs, from device replacement to regulatory penalties. By contrast, proactive maintenance ensures your stormwater assets are working as designed, protecting both your investment and the environment.
At Stormwater360, our Certified Maintenance Provider (SWCMP) Program gives asset owners confidence that systems are inspected, cleaned, and performing at their best with full transparency and reporting. Learn more about the program HERE.