Water Analysis Interpreter

Turn raw, well, surface, boiler, cooling or wastewater analyses into KPIs, a guide-threshold table and an Envora process train. Screening only; jar tests and site design are required.

Calculator

Select sample and target, then enter known parameters; blanks are ignored. Optional alkalinity, silica, SDI, free chlorine, ammonium, phosphate, aluminium and trace contaminants (As in µg/L) improve the screen (mg/L; turbidity NTU, EC µS/cm).

Sample and target

Changes stage order; blank parameters are ignored.

Physical

Optional. If blank, turbidity is a coarse SDI proxy before RO — not a substitute for an SDI test.

Salinity

If TDS is blank, ≈ 0.64 × EC (µS/cm) is used. For mS/cm enter ×1000.

Optional. Needed with pH, hardness and TDS for a Langelier-like scaling/corrosion hint.

Ions
Pollution

Optional; the COD/BOD ratio hints at biodegradability.

Polyamide RO/UF membranes are chlorine-sensitive; carbon or SMBS dechlorination is considered.

Trace contaminants / heavy metals

All optional; blanks are ignored. As, Pb, Cr and Ni are in µg/L (WHO/TS 266 screen). If the report is in mg/L, enter ×1000 (0.01 mg/L As = 10 µg/L).

Drinking-style guide 10 µg/L (0.01 mg/L). If high: adsorption (GFH / activated alumina), coagulation+filtration or RO.

Guide ≈ 1.5 mg/L. If high: RO or activated alumina.

Drinking/irrigation concern often ≈ 1 mg/L. Geothermal and seawater: SWRO + IX.

Total Cr; Cr(VI) speciation is out of scope.

BaSO₄ scaling on RO; review together with sulfate.

Optional odour/corrosion note; aeration / stripping.

Disclaimer: Calculations use general engineering relations and are for preliminary assessment only. They are not sufficient for design, quotation, equipment selection or investment decisions. Contact Envora Global for detailed hydraulic, chemical and process design.

The interpreter maps a lab report onto trains Envora actually builds: drinking-water plants (screening → coagulation–flocculation → lamella/settling → sand/multimedia → carbon → Fe/Mn → softening → UF → RO → disinfection) and wastewater plants (equalization → DAF → physchem → activated sludge or MBR → filtration → RO reuse if needed).

Sample type (well, surface, boiler feed, cooling, wastewater) and target (potable/process, boiler, cooling, discharge, reuse) change which stages are shortlisted. Alkalinity, silica, free chlorine, ammonium, phosphate, aluminium, SDI and trace contaminants (As in µg/L, F, B, Pb/Cr/Ni, Ba, H₂S) are optional; blanks are ignored.

Thresholds are conservative WHO / TS 266-inspired guides plus industrial membrane practice — not a legal discharge or potable licence. A Langelier-like scaling/corrosion hint is produced only when pH, alkalinity, hardness and TDS are all present; missing alkalinity is stated, not faked.

Who is it for?

Process and plant engineers, feasibility teams and investor advisors with a partial analysis who need a first look at an Envora drinking-water, wastewater, desalination or reuse train.

How it works

Choose sample type and target. Use report units (mg/L, NTU, dimensionless pH and SDI, EC in µS/cm). Leave unknowns blank. Calculate returns KPI tiles, a guide-threshold table, an ordered Envora train, risk notes and links to RO, dosing, tank and the wastewater selector.

Assumptions and limits

Thresholds are guidance (WHO/TS 266 and conservative membrane practice); legal limits vary by site. Qualitative LSI uses total hardness as a Ca²⁺ proxy when calcium is missing, and says so. No jar test, speciation, SDI column or membrane projection. The output is not a quotation.

Frequently asked questions

Can I interpret an incomplete analysis?

Yes. Only filled fields are used. Without alkalinity there is no Langelier hint; without SDI, turbidity is noted as a coarse proxy. Arsenic, fluoride, boron and heavy metals are ignored if blank. A core set (pH, TDS or EC, hardness, turbidity) improves the screen.

Is this a potable-water certificate or a quotation?

No. The tool produces a screening report. Potable, process or discharge compliance is decided with an accredited lab, the regulation, jar tests and Envora process design.

Which Envora services does the train map to?

Drinking-water plants (pretreatment, filtration, softening, UF/RO, disinfection), wastewater plants (equalization, DAF, biology, MBR, precipitation), seawater RO and refinery/oily wastewater. Very high TDS pushes the desalination page.

What if RO is suggested?

Move to the RO calculator with feed TDS and desired permeate, then dosing for antiscalant and the tank tool for equalization or a day tank. If wastewater character dominates, use the process selector. Final membrane selection needs SDI and vendor software.

Work with our specialists for detailed design and quotation

Envora Global’s engineering team prepares a project-specific pre-assessment covering water characterization, P&IDs, equipment lists, OPEX/CAPEX and turnkey delivery.