Water Treatment Sizing Calculator
Static · formula-only · worked example computed when this page was built · no live data
The Water Treatment Sizing Calculator finds the design flow, the treatment the raw water needs (turbidity, iron, disinfection), and the filter size that delivers it. Example: for 200 people on deep-well water at 10 NTU turbidity and 0.5 mg/L iron, at 120 L/person/day, Daily demand = 24 m³/day, Peak flow = 1.5 m³/h, Turbidity class = Slightly Turbid, Treated iron = 0.03 mg/L, Disinfection = UV + Chlorination, Filter diameter = 500 mm (per PNS 1998 / PNSDW).
How it works
Computed from your inputs per PNS 1998 / PNSDW. Anything the worked example does not state uses this calculator's standard default; the interactive version shows every input and lets you change it.
Worked example (Plumbing & Pumps)
Inputs: 200 people on deep-well water at 10 NTU turbidity and 0.5 mg/L iron, at 120 L/person/day.
| Result | Value |
|---|---|
| Daily demand | 24 m³/day |
| Peak flow | 1.5 m³/h |
| Turbidity class | Slightly Turbid |
| Treated iron | 0.03 mg/L |
| Disinfection | UV + Chlorination |
| Filter diameter | 500 mm |
Computed by WorkHive's calculation engine when this page was built; standard: PNS 1998 / PNSDW.
How to use this calculator
- Read the worked example. It uses 200 people on deep-well water at 10 NTU turbidity and 0.5 mg/L iron, at 120 L/person/day and shows every number in the method.
- Follow the formula with your own figures: it returns Daily demand, Peak flow, Turbidity class, Treated iron, Disinfection, Filter diameter, computed per PNS 1998 / PNSDW.
- To compute interactively, open the Water Treatment Sizing Calculator inside WorkHive's free Engineering Design suite (link below). It runs the same method with your inputs.
FAQ
What is a water treatment plant sizing calculator?
The Water Treatment Sizing Calculator is a free online tool that finds the design flow, the treatment the raw water needs (turbidity, iron, disinfection), and the filter size that delivers it. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following PNS 1998 / PNSDW. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive is free: this worked example is open to everyone, and the interactive calculator runs inside the free Engineering Design suite after a free sign-up (your work is saved to your account). WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive Water Treatment Sizing Calculator in WorkHive. Free, and a free sign-up saves your calculations, BOMs and scope-of-works to your account.