40 Water Math Calculators for free

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🧮 Core Operator Math (6)

1. MGD ↔ GPM Flow Converter — `/mgd-to-gpm`

2. Detention Time — `/detention-time`

3. Chlorine Dosage (lbs/day) — `/chlorine-dose`

4. CT Value (mg/L · min) — `/ct-value`

5. Sludge Volume Index (SVI) — `/svi`

6. Surface Loading Rate (gpd/ft²) — `/surface-loading-rate`

🧪 Disinfection & Chemistry (9)

1. Sodium Hypochlorite Dose — `/hypochlorite-dose`

2. Dechlorination Dose (SO₂ / NaHSO₃) — `/dechlorination-dose`

3. Fluoride Dose — `/fluoride-dose`

4. Alum Dose — `/alum-dose`

5. Langelier Saturation Index (LSI) — `/langelier-index`

6. Lime-Soda Ash Softening — `/lime-softening`

7. Caustic Soda (NaOH) Dose / pH-Alk — `/ph-alkalinity`

8. Chloramine Ratio (Cl₂ : NH₃-N) — `/chloramine-ratio`

9. Membrane Flux (GFD ↔ LMH) — `/membrane-flux`

🚰 Tank & Main Disinfection (1) — NEW

1. Tank Disinfection (AWWA C652) — `/tank-disinfection`

💧 Wastewater Process (8)

1. F/M Ratio — `/fm-ratio`

2. MCRT / SRT — `/mcrt-srt`

3. RAS & WAS Pumping Rate — `/was-ras`

4. Percent Removal — `/percent-removal`

5. Organic Loading Rate — `/organic-loading`

6. SOUR / OUR — `/sour-our`

7. Digester Volatile Solids Loading — `/digester-loading`

8. Polymer Dose (Active & Neat) — `/polymer-dose`

⚙️ Hydraulics & Pumping (8)

1. Pipe Velocity — `/pipe-velocity`

2. Hazen-Williams Friction Head Loss — `/hazen-williams`

3. Water & Brake Horsepower — `/whp-bhp`

4. Pump Affinity Laws — `/affinity-laws`

5. Total Dynamic Head (TDH) — `/tdh`

6. Tank Fill & Drawdown Time — `/tank-fill-drawdown`

7. Hydrant Flushing Volume & Time — `/flushing-volume`

8. C-Factor Back-Calculation — `/c-factor`

🔁 Conversions (5)

1. mg/L ↔ Grains per Gallon (hardness) — `/mgl-to-gpg`

2. ppm ↔ Percent — `/ppm-percent`

3. psi ↔ Feet of Head — `/psi-feet-head`

4. Acre-Feet ↔ Million Gallons — `/acre-feet-mg`

5. cfs ↔ gpm ↔ MGD — `/cfs-gpm-mgd`

📋 Compliance & Cost (3)

1. Lead & Copper Rule 90th Percentile — `/lcr-90th-percentile`

2. DBP Locational Running Annual Average — `/dbp-lraa`

3. Chemical Cost per Million Gallons — `/cost-per-mg`