Contaminated fuel tanks are the #1 cause of backup generator failures. Sludge, water, and microbial growth accumulate over time — quietly degrading your fuel until the moment you need it most.
FuelCare’s tank cleaning service removes contaminants that filters and additives can’t reach. We clean the interior walls, extract sediment, separate water, and leave your tank ready to store fuel that actually works when the power goes out.
Most facility managers don’t think about tank cleaning until something fails. Here are the warning signs:
If you’re replacing filters more often than usual, contamination is building up in your tank. Filters catch particles — but they can’t remove the source.
Water collects at the bottom of fuel tanks through condensation and seal degradation. Even small amounts create an environment for microbial growth.
Healthy diesel is clear amber. If your fuel sample looks dark, cloudy, or has visible particles, your tank needs attention.
Lab analysis showing high particulate counts, water content above 200 ppm, or microbial contamination means your tank — not just your fuel — needs cleaning.
Industry best practice is tank cleaning every 3-5 years for standby generator tanks, more frequently for high-turnover fuel storage.
Before we touch your tank, we test your fuel. Our certified lab analysis establishes baseline contamination levels — particulate count, water content, microbial presence, and fuel stability. This tells us exactly what we’re dealing with.
We pump existing fuel into clean, filtered temporary storage tanks. This protects your fuel investment while we work on the tank interior.
Using specialized equipment, we clean the interior walls, baffles, and floor of your tank at pressures that remove adhered sludge, biofilm, and corrosion products. This is what separates professional cleaning from fuel polishing — we clean the tank itself, not just the fuel.
All loosened material is vacuumed out and contained for proper disposal. We don’t leave contamination behind to re-enter your fuel supply.
Before returning fuel to your tank, we run it through multi-stage filtration and water separation. Fuel is filtered to 1 micron and water content is reduced below 100 ppm.
A final fuel sample confirms cleaning effectiveness. You receive a complete documentation package: before/after lab results, photos, cleaning certificates, and compliance records.
Bulk fuel storage tanks from 500 to 50,000+ gallons. Steel, fiberglass, and double-wall configurations. We access through existing openings or coordinate confined space entry when needed.
Regulated underground tanks require careful cleaning protocols that maintain EPA compliance. We handle permitting, waste disposal, and documentation.
The smaller tanks directly feeding your backup generators. These are often overlooked but critical — a contaminated day tank means your generator won’t start when you need it.
Diesel-driven fire pumps require clean fuel at all times. We clean and test these tanks on schedules that maintain fire code compliance.
Fleet fueling depots, fuel farms, and multi-tank facilities. We can clean multiple tanks in sequence with minimal disruption to your fueling operations.
| Approach | Removes Sludge | Removes Water | Kills Biofilm | Cleans Walls | Lasts |
|---|---|---|---|---|---|
| Chemical additives | No | Disperses only | Partially | No | Weeks |
| Fuel polishing | Filters particles | Yes | No | No | Months |
| Tank cleaning | Yes | Yes | Yes | Yes | 3-5 years |
Chemical additives disperse water into your fuel rather than removing it. Fuel polishing filters the fuel but leaves contamination adhered to tank walls — where it re-contaminates fresh fuel. Professional tank cleaning addresses the root cause.
For best results, we recommend tank cleaning followed by fuel polishing — clean the container first, then polish the fuel.
Every tank cleaning includes a complete documentation package:
For healthcare facilities, we provide documentation formatted for Joint Commission and CMS survey readiness.
Not sure if your tank needs cleaning? We’ll test your fuel and inspect your tank — the assessment tells you exactly what’s needed and what it costs. No surprises.
