Pressure Washing and Cleaning Chemical Storage: Tank Selection and Installation Guide
Pressure Washing and Cleaning Chemical Storage
Commercial pressure washing operations, janitorial services, and industrial cleaning companies need reliable chemical storage for soaps, detergents, degreasers, sanitizers, and rinse water. These chemicals vary widely in density and aggressiveness — some are mild enough for a water-only tank, others require full chemical-rated storage with specific gravity well above 1.0. Getting the tank rating wrong means the chemical eats through the fittings or attacks the tank walls.
Why Tank Selection Matters for Pressure Washing and Cleaning Chemical Storage
Not every polyethylene tank works for every application. The wrong tank can mean chemical incompatibility, premature failure, regulatory violations, or simply wasted money on features you don't need. This guide walks you through the specific requirements for pressure washing and cleaning chemical storage and matches you with the right tank from our catalog.
Key Requirements
- Chemical Compatibility — Verify every cleaning chemical against the polyethylene compatibility chart. Most soaps and detergents are compatible, but some solvents and oxidizers are not.
- Specific Gravity — Most cleaning solutions are close to water density (SG 1.0-1.2), but concentrated products can exceed 1.3. Check the SDS.
- Portability — Many cleaning operations are mobile. Loaf tanks and applicator tanks mount to trailers and trucks.
- Multiple Chemicals — Never mix chemicals in a single tank. Use separate tanks for each chemical and clearly label them.
Recommended Tank Types
Vertical Chemical Storage
Stationary base storage for cleaning chemical inventory.
Shop Vertical Chemical Storage
Loaf and Utility Tanks
Low-profile tanks for truck and trailer mounting. Carry chemicals and rinse water to job sites.
Installation Considerations for Pressure Washing and Cleaning Chemical Storage
Labeling
OSHA requires all chemical containers to be labeled with the chemical name, hazard warnings, and handling instructions. This applies to storage tanks as well as original containers. Use weatherproof labels and replace them when they become illegible.
Rinse Water Management
Pressure washing generates contaminated rinse water that may require capture and proper disposal. Many jurisdictions prohibit discharge of cleaning chemicals into storm drains. Check local regulations and plan for rinse water containment.
Sizing Your Tank
Tank sizing for pressure washing and cleaning chemical storage depends on your usage rate, refill frequency, and peak demand. The general formula is:
Required Capacity = Daily Usage × Days Between Refills × 1.2 Safety Factor
The 1.2 safety factor accounts for peak usage days, delivery delays, and the fact that you should never run a tank completely dry (the sediment at the bottom can clog fittings and pumps). If your application has seasonal peaks, size for peak demand rather than average demand.
Maintenance Specific to Pressure Washing and Cleaning Chemical Storage
Standard polyethylene tank maintenance applies: quarterly visual inspection, fitting checks, foundation verification, and vent maintenance. For pressure washing and cleaning chemical storage specifically, pay extra attention to:
- Chemical compatibility: If you change chemicals or suppliers, verify the new formulation is compatible with polyethylene and within the tank's specific gravity rating before adding it to the tank.
- Residue buildup: Some liquids leave residue on tank walls over time. Annual interior inspection and cleaning prevents buildup from affecting liquid quality or reducing effective capacity.
- Fitting condition: Applications with frequent connect/disconnect cycles wear fittings faster. Replace threaded fittings at the first sign of thread damage — a cross-threaded or stripped fitting is a leak waiting to happen.
- Secondary containment: If required by your local regulations, inspect containment berms, dikes, or trays during each tank inspection. Secondary containment only works if it's intact.
Frequently Asked Questions
What size tank do I need for pressure washing and cleaning chemical storage?
Start with your daily usage rate and multiply by the number of days between refills, then add 20% for safety margin. For example, if you use 50 gallons per day and refill weekly, you need: 50 × 7 × 1.2 = 420 gallons minimum. Round up to the next standard size — in this case, 500 gallons.
Do I need a chemical-rated tank or a water-only tank?
If you are storing anything other than clean water, choose a chemical-rated tank (SG 1.5 or higher). The thicker walls and higher material rating provide safety margin for chemical exposure, and you won't need to replace the tank if you switch liquids later. Water-only tanks save money but limit your future options.
What permits do I need?
Permit requirements depend on your location, the tank size, and what you are storing. Water storage typically requires no permits below 5,000 gallons. Chemical storage often requires permits, secondary containment, and fire marshal review. Agricultural exemptions may apply for farm chemical storage. Always check with your local building department and fire authority before installation.
Can I install the tank myself?
For tanks under 500 gallons, DIY installation is straightforward if you follow proper site preparation and plumbing practices. For larger tanks, we recommend professional installation — the weight involved creates safety risks, and improper placement can void the warranty. Either way, a proper foundation is non-negotiable.
How do I handle delivery and placement?
Small tanks (under 200 gallons) ship via UPS/FedEx ground. Mid-size tanks (200-1000 gallons) ship LTL on a pallet — you'll need a forklift or request liftgate delivery. Large tanks (1000+ gallons) ship via flatbed and require equipment for unloading. Call us to coordinate delivery logistics for your specific site conditions.
Need expert guidance on tank selection for pressure washing and cleaning chemical storage? Call (866) 418-1777 — we'll help you size, select, and plan your installation.