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  <!-- Core Pages -->
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  <!-- Category Pages -->
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    <loc>https://watertankcalculator.com/calculators/volume/</loc>
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  <!-- Volume & Capacity Calculators (11 tools) -->
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    <loc>https://watertankcalculator.com/calculators/volume/rectangular-water-tank-volume-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/volume/tank-liters-to-gallons-converter</loc>
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    <loc>https://watertankcalculator.com/calculators/volume/capsule-tank-volume-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/volume/cone-bottom-tank-volume-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/volume/spherical-water-tank-volume-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Household Sizing Calculators (6 tools) -->
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    <loc>https://watertankcalculator.com/calculators/household/daily-water-requirement-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/household/water-tank-size-for-home-calculator</loc>
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  <url>
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  <url>
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  <url>
    <loc>https://watertankcalculator.com/calculators/household/commercial-water-tank-size-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/household/school-institutional-water-tank-size-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Refill, Flow & Time Calculators (6 tools) -->
  <url>
    <loc>https://watertankcalculator.com/calculators/flow/tank-refill-time-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/flow/water-flow-rate-calculator</loc>
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  <url>
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  <url>
    <loc>https://watertankcalculator.com/calculators/flow/pipe-size-flow-rate-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/flow/water-meter-reading-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/flow/pump-horsepower-flow-rate-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Weight & Structural Load Calculators (5 tools) -->
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    <loc>https://watertankcalculator.com/calculators/weight/water-tank-weight-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://watertankcalculator.com/calculators/weight/rooftop-load-bearing-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
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  <url>
    <loc>https://watertankcalculator.com/calculators/weight/tank-weight-per-sqft-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://watertankcalculator.com/calculators/weight/safe-rooftop-tank-load-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Pressure & Height Calculators (6 tools) -->
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    <changefreq>monthly</changefreq>
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  <!-- Water Treatment Calculators (10 tools) -->
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    <changefreq>monthly</changefreq>
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  <url>
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  <url>
    <loc>https://watertankcalculator.com/calculators/treatment/water-tank-disinfection-calculator</loc>
    <changefreq>monthly</changefreq>
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    <loc>https://watertankcalculator.com/calculators/treatment/water-hardness-calculator</loc>
    <changefreq>monthly</changefreq>
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    <loc>https://watertankcalculator.com/calculators/treatment/tds-water-calculator</loc>
    <changefreq>monthly</changefreq>
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    <loc>https://watertankcalculator.com/calculators/treatment/water-ph-adjustment-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/treatment/potassium-permanganate-dosage-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://watertankcalculator.com/calculators/treatment/safe-water-storage-duration-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/treatment/uv-disinfection-tank-calculator</loc>
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    <loc>https://watertankcalculator.com/calculators/treatment/water-filter-flow-rate-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Rainwater Harvesting Calculators (7 tools) -->
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    <loc>https://watertankcalculator.com/calculators/rainwater/rainwater-harvesting-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
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    <loc>https://watertankcalculator.com/calculators/rainwater/roof-catchment-area-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/rainwater/annual-rainwater-collection-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://watertankcalculator.com/calculators/rainwater/first-flush-diverter-size-calculator</loc>
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    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/rainwater/rainwater-savings-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/rainwater/rainwater-harvesting-roi-calculator</loc>
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  <!-- Agricultural & Irrigation Calculators (9 tools) -->
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    <loc>https://watertankcalculator.com/calculators/agriculture/irrigation-water-requirement-calculator</loc>
    <changefreq>monthly</changefreq>
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    <loc>https://watertankcalculator.com/calculators/agriculture/crop-water-need-calculator</loc>
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  <url>
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  <url>
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  <url>
    <loc>https://watertankcalculator.com/calculators/agriculture/sprinkler-water-usage-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/agriculture/livestock-water-requirement-calculator</loc>
    <changefreq>monthly</changefreq>
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  <url>
    <loc>https://watertankcalculator.com/calculators/agriculture/irrigation-pump-size-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/agriculture/field-irrigation-tank-sizing-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/agriculture/greenhouse-water-usage-calculator</loc>
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  <!-- Cost & Comparison Calculators (8 tools) -->
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    <loc>https://watertankcalculator.com/calculators/cost/water-tank-cost-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/plastic-vs-steel-tank-cost-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/water-bill-savings-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/water-tank-installation-cost-estimator</loc>
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    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/water-delivery-vs-tank-cost-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/borehole-vs-mains-water-cost-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/water-storage-cost-per-liter-calculator</loc>
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  <url>
    <loc>https://watertankcalculator.com/calculators/cost/underground-vs-rooftop-tank-cost-calculator</loc>
    <changefreq>monthly</changefreq>
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  <!-- Emergency & Survival Calculators (6 tools) -->
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    <loc>https://watertankcalculator.com/calculators/emergency/emergency-water-storage-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/emergency/72-hour-water-supply-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/emergency/water-stockpile-duration-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/emergency/bug-out-bag-water-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/emergency/off-grid-water-storage-calculator</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <url>
    <loc>https://watertankcalculator.com/calculators/emergency/hurricane-disaster-water-prep-calculator</loc>
    <changefreq>monthly</changefreq>
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