6m x 6m Water Tank Capacity, DPWH Specs, and Material Options in the Philippines

A 6m x 6m callout is a dimension, not a fixed capacity. A 6m x 6m footprint measures 36 square meters, and DPWH-funded projects such as school buildings, rural health units, and evacuation centers often specify this footprint directly in the technical drawings without stating a matching capacity in liters, because capacity depends on the wall height or depth noted elsewhere in the plans. A 1 meter deep tank and a 3 meter deep tank on the same 6m x 6m base hold very different volumes, so before you can quote, size, or fabricate against this callout, you need the missing depth figure. JOHOB Hardware Trading supplies FRP, HDG, and stainless steel modular tanks nationwide, and can build to a 6m x 6m footprint at whatever depth your project drawings call for, sourced through an ISO 9001 certified partner factory. If your bid documents show only 6m x 6m with no depth, the standard practice is to confirm the missing dimension with the project engineer before submitting a quote, so the capacity and material grade you propose match what will pass a design review. Keep the DPWH drawing reference number and the confirmed depth on file alongside your supplier's technical datasheet, since procurement and audit reviews on public infrastructure projects commonly ask for both at turnover.

Once you know the depth, converting a 6m x 6m footprint to usable capacity is straightforward: multiply the 36 square meter footprint by the depth in meters, then by 1,000 liters per cubic meter. At 1 meter depth, a 6m x 6m tank holds 36,000 liters. At 1.5 meters, it holds 54,000 liters. At 2 meters, it holds 72,000 liters. At 2.5 meters, it holds 90,000 liters. At 3 meters, it holds 108,000 liters. These figures assume the full 6m x 6m internal footprint with no allowance for wall thickness or freeboard, so treat them as a design reference and confirm final capacity against your supplier's fabrication drawing, since modular panel systems can lose a small margin of internal footprint to panel flanges and bracing. JOHOB Hardware Trading fabricates modular tanks in these increments and larger nationwide, across NCR, Luzon, Visayas, Mindanao, and PEZA and SBMA zones, with standard lead times of 21 to 35 days for ex-stock configurations and 45 to 90 days for made-to-order sizes and depths.

A 6m x 6m tank can be built in FRP (fiberglass reinforced plastic), hot-dip galvanized (HDG) steel, or stainless steel, and the right material depends on the water use, budget, and site conditions rather than the footprint itself. FRP modular tanks, supplied under the TankSmith sister brand, resist corrosion in coastal and high-humidity sites and are typically the lowest-cost option per liter at this size. HDG modular steel tanks cost less per panel than stainless steel and suit fire reserve or non-potable storage where corrosion exposure is moderate. Stainless steel tanks cost more but are the standard choice where water quality, hygiene, or long-term structural life outweigh upfront price, such as potable water storage in hospitals or food facilities. All three are supplied as modular, bolted panel systems, which means a 6m x 6m footprint ships and assembles on site from standard panel sizes rather than as one welded shell, keeping delivery and site access practical for most DPWH project locations nationwide. JOHOB Hardware Trading quotes all three materials against the same footprint and depth so you can compare landed cost before committing to a specification.

Before you finalize a 6m x 6m tank order for a DPWH-funded or publicly bid project, confirm the certifications that procurement and audit reviews typically ask for. JOHOB Hardware Trading's supplied tank panels carry WRAS certification, the UK water-contact safety standard, alongside ISO 9001 quality management certification from the manufacturing partner and TUV SUD testing. Where the tank package includes electrical components such as level controllers or transfer pumps, those carry CE marking, and any pressure-rated components meet ASME standards where applicable. Ask your supplier for the certificate documents in writing before order placement, not after delivery, since procurement and audit reviews on public infrastructure projects commonly request these at project turnover and a missing certificate can delay acceptance. JOHOB Hardware Trading is not PCAB-accredited and does not represent otherwise; the certifications listed here apply to the tank panels and components supplied, not to construction or installation licensing. Keep the certificate set together with your DPWH drawing reference and the confirmed depth from the sizing step above, so the full package is ready for whoever runs the turnover inspection.

Standard 6m x 6m tank configurations ship ex-stock in 21 to 35 days; made-to-order depths, materials, or accessory packages run 45 to 90 days, so build your DPWH project timeline around whichever applies to your confirmed specification. Pricing is quote-based rather than publicly listed, since landed cost depends on material, depth, and delivery site; 12% VAT applies for VAT-registered buyers, and PEZA, SBMA, or export-registered buyers qualify for zero-VAT treatment on the same tank package. JOHOB Hardware Trading delivers nationwide, covering NCR, Luzon, Visayas, Mindanao, and PEZA, SBMA, and Clark zones, and responds to RFQs within 1 business day. To get an accurate quote for a 6m x 6m DPWH tank, send the confirmed depth, material preference, delivery site, and whether the buyer is VAT-registered, PEZA, or SBMA-registered, so the quote reflects the correct tax treatment and lead time from the first reply.