Don't Wait for a Flood to Call
Stormwater system failures don't happen overnight. There are always warning signs — but most property owners and facility managers don't know what to look for until water is already pooling on the parking lot or backing up into the building.
Here are the seven signs that mean you need to call for emergency service — or schedule urgent maintenance before the next rain event makes things worse.
1. Water Pooling Where It Didn't Before
If you're seeing standing water in parking lots, near buildings, or in landscaped areas that previously drained fine, something has changed underground. Common causes include collapsed pipes, blocked catch basins, or sediment buildup reducing pipe capacity.
2. Sinkholes or Ground Settlement
Depressions forming in pavement or soil near storm drains indicate that underground pipes have failed and soil is washing into the void. This is a structural emergency — sinkholes can expand rapidly, especially during rain events, and pose serious safety risks.
3. Gurgling or Unusual Sounds from Drains
Air trapped in partially blocked pipes produces gurgling sounds when water tries to flow past the obstruction. If your floor drains, catch basins, or roof drains are making noise during rain events, you have a blockage building downstream.
4. Foul Odors Near Storm Drains
Storm sewers shouldn't smell. If you detect sewage odors near storm drain inlets, it could indicate a cross-connection between the sanitary and storm sewer systems — an illicit discharge that violates your NPDES permit and creates health hazards.
5. Visible Erosion Around Outfalls
Check where your storm sewer discharges to a ditch, stream, or detention basin. If you see significant erosion, undercutting, or sediment deposits, your system may be carrying more flow than designed — often because upstream capacity is reduced by blockages.
6. Backing Up During Moderate Rain
Your stormwater system should handle normal rainfall without issues. If water backs up through catch basin grates or manhole covers during typical rain events, the system's capacity is seriously compromised. This usually means pipes are partially blocked with sediment, grease, or debris.
7. Discolored Water Discharging from Outfalls
If water leaving your storm sewer outfall is brown, oily, or has a visible sheen, pollutants are passing through your system untreated. This is both an environmental concern and a compliance violation that needs immediate investigation.
{blog_cta()}What to Do When You Spot These Signs
- Document the issue — Take photos and notes about location, timing, and severity
- Mark the area — If there's a sinkhole or safety hazard, barricade it immediately
- Call a professional — Our 24/7 emergency response team can deploy vacuum trucks and inspection equipment quickly
- Don't ignore it — Every rain event makes a compromised system worse. A problem that costs hundreds to fix today can become a five-figure emergency next month
EnviroFlow's Emergency Response
We maintain a fleet of Vactor trucks and CCTV inspection units ready to deploy across Northeast Ohio 24 hours a day, 7 days a week. When you call our emergency line, here's what happens:
- Immediate phone consultation to assess severity
- Crew dispatched with appropriate equipment
- On-site assessment and immediate mitigation
- Full documentation and follow-up recommendations
24/7 Emergency Line: (440) 290-1550