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Cleaning chemicals out of an IBC tote starts with identifying exactly what was stored in it. Do not begin by adding soap, bleach, vinegar, or another cleaner.
If the tote held an unknown chemical, pesticide, fuel, solvent, strong acid, strong alkali, or another hazardous material, the safest choice is usually not to clean it for rainwater reuse yourself. Use a qualified IBC reconditioner or dispose of the tote according to the product label and local requirements.
For a tote that held a known, non-hazardous, water-soluble material, careful draining, repeated rinsing, detergent washing, and thorough flushing may make it suitable for some non-potable uses. Non-potable means the water is not intended for drinking.
A tote that once held toxic chemicals should not be converted into a drinking-water tank just because it looks and smells clean. CDC guidance specifically advises against using water-storage containers that previously held toxic chemicals such as pesticides.
Find Out What Was in the Tote First
Look for the original product label before opening, rinsing, cutting, or working inside the tote.
You need to know:
- The exact chemical or product name
- Whether the product was hazardous
- Whether it dissolves in water
- Whether it reacts with water or common cleaners
- What personal protective equipment is required
- How rinse water must be handled
- Whether the container is allowed to be reused
If you have the product name, locate its current Safety Data Sheet, often called an SDS. The SDS provides information about hazards, protective equipment, spills, storage, and disposal.
Do not rely on a seller saying that a tote was "washed," "rinsed," or "food grade." Ask what it originally contained.
If nobody can tell you, treat the contents as unknown.
When the previous contents are unknown
An unknown tote is a poor choice for a rainwater system.
You cannot tell what chemical was present by looking at the plastic. A missing odor does not prove that harmful residue is gone.
For garden watering, animal water, household reuse, or any application where people may contact the water, starting with a tote with a documented history is much safer than trying to rehabilitate an unknown container.
Decide Whether the Tote Should Be Reused at All
The former contents matter more than how dirty the tote looks.
A tote that held a food ingredient
An IBC that held something such as a known food ingredient may be a reasonable candidate for cleaning and non-potable rainwater storage, provided the container itself is still suitable.
The residue may still take substantial washing to remove. Oils, syrups, and thick concentrates can cling to valves and corners.
The tote's previous food use also does not make collected rainwater safe to drink. Drinking-water use requires suitable collection, storage, treatment, maintenance, and water-quality testing.
A tote that held a known non-hazardous, water-soluble product
Some documented, non-hazardous residues can be removed through draining, water rinsing, and an appropriate detergent wash.
Check the SDS and manufacturer's instructions first. Confirm how the rinse water should be disposed of.
A tote that held pesticides
Do not repurpose a pesticide IBC as a household rainwater tank.
EPA requires pesticide users to follow the container-cleaning and handling directions on the pesticide label. Even where rinsing is required, the goal is proper container management, not automatically making the container suitable for a new household use.
Older EPA guidance also warns that even thoroughly rinsed pesticide containers can retain small amounts of pesticide and should not be reused for other purposes.
A tote that held fuel, oil, solvents, or hazardous industrial chemicals
Do not assume repeated water washing will make these totes suitable for rainwater.
Some chemicals are poorly soluble in water. Others can remain in seams, valves, gaskets, or plastic surfaces. Cleaning them may also produce hazardous wastewater.
A commercial IBC reconditioner or hazardous-material professional is the better option.
A tote that held strong acids, bases, oxidizers, or reactive materials
Do not experiment with homemade neutralizing solutions.
Adding the wrong chemical can create heat, pressure, splashing, or harmful gases. Follow the SDS and use a qualified professional when chemical neutralization is required.
How to Clean a Tote With a Known, Low-Risk Residue
The following approach is for a tote whose former contents have been positively identified and confirmed to be non-hazardous and suitable for water-based cleaning.
It is not a decontamination procedure for pesticides, solvents, corrosives, fuels, or unknown chemicals.
1. Drain the remaining material correctly
Empty as much of the original material as possible through the tote's normal outlet.
Do not dump chemical residue onto soil, into a storm drain, or into a waterway.
How the remaining product and rinse water should be handled depends on what the product is. Check its label, SDS, and local waste requirements.
2. Check the valve, cap, and seals
Residue often collects in places that are harder to see than the main tank.
Inspect:
- Bottom valve
- Outlet threads
- Valve cavity
- Top cap
- Gaskets
- Seals
- Corners around the bottom of the bottle
If a seal or valve cannot be cleaned adequately, replacement may be more practical than trying to wash contamination out of it.
Make sure replacement parts are compatible with both the tote and its intended water use.
3. Rinse with an appropriate cleaning liquid
For a known water-soluble, non-hazardous residue, water may be suitable.
Use only a cleaning liquid that the product information says is compatible with the residue.
Do not randomly mix cleaners. In particular, never combine bleach with acids, ammonia, or unidentified chemical residue.
Move the rinse liquid across as much of the interior surface as practical without entering the tote.
Drain the rinse liquid into an appropriate collection container rather than automatically releasing it onto the ground.
4. Wash with detergent when appropriate
If the SDS and former product allow normal water cleaning, a suitable detergent can help loosen remaining residue.
The goal is to remove material from:
- Walls
- Bottom
- Corners
- Outlet area
- Valve
- Accessible fittings
Do not climb into an IBC tote.
An IBC is a confined space with a small opening and is not designed for a person to enter for cleaning. If a tote cannot be cleaned without entry, leave that work to properly equipped professionals.
5. Rinse until detergent and removable residue are gone
Drain the wash water and rinse again with clean water.
Several rinses may be needed for thick or sticky materials. There is no universal number of rinses that proves every chemical has been removed.
Evaluating a suitable way to clean out an ibc tote helps verify how the selected parts interface in service.
That is an important difference from certain pesticide-label procedures. EPA may require specific triple-rinse procedures for particular pesticide containers, but those directions apply to the labeled pesticide and container-management process. They are not a general recipe for turning any chemical tote into a rainwater tank.
6. Clean or replace removable fittings
A clean-looking tank can still have residue trapped in its outlet.
Depending on the tote design, accessible removable parts may need separate cleaning or replacement.
Do not force apart a valve that is not designed for servicing. Damaged outlet fittings can create serious leaks once hundreds of gallons of water are stored above them.
7. Inspect the tote after cleaning
Check for:
- Remaining residue
- Film on the walls
- Staining
- Strong odor
- Damaged plastic
- Cracks
- Swelling or distortion
- Damaged valve parts
- Brittle seals
Odor and appearance can help you find obvious contamination, but neither can prove that a hazardous chemical has been removed.
If there is any doubt about the tote's history or cleanliness, choose another container.
What Should You Do With the Rinse Water?
This part is easy to overlook.
When you wash a chemical tote, the chemical does not disappear. It moves into the rinse water.
That rinse water may therefore need the same careful handling as the original product.
Do not automatically:
- Pour it into a storm drain
- Dump it beside a building
- Spread it over a garden
- Empty it into a creek or pond
- Pour it into a septic system
- Send it down a household drain
For pesticides, follow the product's label instructions. EPA notes that pesticide container labels contain required cleaning and container-handling directions that users must follow.
For other chemicals, check the SDS and your local waste authority's requirements.
Can Bleach Make a Chemical Tote Safe?
Bleach is a disinfectant. It is not a universal chemical-removal agent.
It may help sanitize an already suitable water-storage container after physical cleaning, but sanitation and chemical decontamination are different jobs.
Bleach will not prove that solvents, pesticides, fuels, oils, heavy metals, or unidentified chemicals have been removed.
It can also react dangerously with some chemical residues.
Do not add bleach until you know what was in the tote and have confirmed that the materials are compatible.
Can You Pressure Wash an IBC Tote?
A pressure washer can help remove some physical residue from an appropriate tote, but it does not change the basic safety decision.
You still need to know:
- What chemical was present
- Whether water is an appropriate cleaner
- How the wastewater will be collected
- Whether aerosols or splashes could create an exposure risk
Avoid creating a mist from hazardous or unidentified residues.
Never put your head or body through the tote opening to improve your reach.
Can a Cleaned Chemical Tote Hold Rainwater?
It depends on both the previous chemical and what you plan to do with the collected rainwater.
A properly cleaned tote with a documented low-risk history may be useful for applications such as certain landscape or irrigation systems.
The standard should be much higher when the water could contact:
- People
- Food
- Animals
- Indoor plumbing
- Drinking-water equipment
For drinking water, start with a container specifically suitable for potable-water storage rather than trying to convert an IBC with a toxic-chemical history.
Potable water means water considered suitable for drinking. A storage tank being clean is only one part of potable-water safety.
CDC advises using food-grade containers for safe water storage and specifically says not to use containers previously used for toxic chemicals.
Do Not Judge a Tote by Its Color
The color of an IBC bottle does not tell you what it previously contained.
Likewise, a recycling mark on the plastic does not establish its previous contents or prove that it is suitable for drinking-water storage.
The safest purchase is one with traceable previous contents and clear information about its intended reuse.
For a rainwater system, that history is often more valuable than getting a cheaper tote that requires uncertain chemical cleanup.
Check the Tote Before Filling It With Rainwater
Once you have a suitable, cleaned tote, inspect the rest of the system before filling it.
Make sure:
- The base supports the full load
- The cage is not badly damaged
- The bottom valve closes correctly
- Adapters fit the actual outlet thread
- The lid and openings can keep debris and insects out
- Overflow water has a safe path away from foundations
- The tote is protected from vehicle impacts and tipping
- Freezing conditions are considered if the system stays outdoors
Water is heavy. A full IBC can weigh several thousand pounds depending on its capacity, so the supporting surface must be firm, level, and suitable for the load.
Cleaning the inside is only useful if the container is structurally sound afterward.
When to Stop Cleaning and Choose Another Tote
Replacing the tote is usually the better decision when:
- The previous contents are unknown
- The label is missing and the contents cannot be verified
- It held pesticides
- It held fuel or solvents
- It held a highly toxic or reactive chemical
- The SDS requires specialized decontamination
- You cannot safely collect or dispose of the wastewater
- Strong residue remains after appropriate cleaning
- The plastic, valve, or seals are damaged
- You want the tote for drinking-water storage but its prior chemical history is questionable
An IBC tote is replaceable. Creating an uncertain water source is rarely worth the effort saved by reusing the wrong container.
Frequently Asked Questions
How many times should I rinse a chemical IBC tote?
There is no universal number. The proper cleaning method depends on the exact previous contents. Some pesticide labels specify triple rinsing, but that requirement does not mean three rinses will make every chemical container safe for rainwater reuse. Follow the product label and SDS.
Can I use vinegar to clean chemicals from an IBC tote?
Do not use vinegar unless you know exactly what the previous chemical was and have confirmed that an acid cleaner is appropriate. Vinegar can react with some residues and should never be mixed with bleach.
Can I use dish soap to clean an IBC tote?
For a known, non-hazardous residue that is compatible with water cleaning, detergent may help remove oils or films. It is not a reliable way to decontaminate a tote that held toxic chemicals, pesticides, fuels, solvents, or unknown materials.
Is a cleaned IBC tote safe for drinking water?
Not necessarily. CDC advises against using water-storage containers that previously held toxic chemicals. For potable use, use a container suitable for drinking-water storage and treat rainwater safety as a complete system involving collection, treatment, testing, and maintenance.
Can I use a chemical tote for watering my garden?
Only after you know exactly what it contained and determine that the tote is appropriate for that use. An unknown or hazardous chemical history is a good reason to choose another tote, especially around food crops.
Does a lack of chemical smell mean the tote is clean?
No. Odor can reveal some remaining contamination, but a lack of odor cannot prove that harmful residues are gone.
Should I remove the IBC bottle from its cage for cleaning?
Usually there is no need to remove the bottle merely to rinse it. Removing or handling a large tank can introduce other safety problems. Keep the tote stable, avoid entering it, and use a professional service if proper cleaning requires access you cannot achieve safely.
