Integrated Water Treatment RFQ: Prepare Your Raw-Water Report

Direct Answer

Send the supplier the raw-water laboratory report together with its sampling context. Identify the water source, sampling location, sampling date and any treatment applied before the sample was collected.

Also state the intended product-water use and the required quality criteria. Ask the supplier to identify missing information and explain which assumptions remain provisional before final equipment selection.

A report without sampling context can leave uncertainty about which water the proposed system must treat.

Application Scenarios

For remote work sites and temporary camps, identify the source expected to supply the treatment package and whether that source may change during the project.

For rural or distributed water-supply projects, describe known seasonal changes and provide available records from different operating periods.

For industrial facilities, clarify whether the sample represents incoming source water, water after existing pretreatment or another process stream. These sampling locations should not be treated as interchangeable.

Selection Factors

Identify the Actual Equipment Feed

Mark the proposed treatment-package inlet on a simple process sketch. Show where the sample was taken relative to that point.

If existing filtration, chemical dosing, storage or other treatment occurs before the sampling point, describe it. Ask the supplier whether the available report represents the proposed feed or whether additional sampling is required.

Keep the original laboratory report available rather than supplying only selected values copied into an enquiry.

Explain When and How the Sample Was Obtained

Provide the sampling date, location and available collection records. State whether the sample was collected during normal operation or under another known condition.

If collection or handling details are missing, identify the gap. Ask the laboratory or responsible technical party to confirm the sampling requirements for any additional analysis.

This guide does not prescribe sample preservation methods or a universal testing panel.

Describe Known Variation

Provide available evidence of changes in source, appearance or operation. Distinguish measured results from observations.

For example, an observation that water becomes visibly cloudy after rainfall is useful context, but it is not a measured turbidity value. Label it as an observation and ask whether representative additional sampling is needed.

Do not invent a design range from a single result. Request that the proposal identify the feed conditions it assumes and any further verification required.

Define the Product-Water Requirement Separately

Describe the intended use and provide the applicable project water-quality specification.

Avoid using “clean water” as the only acceptance description. Ask the supplier to identify which requirements its proposed process is intended to address and what evidence is needed to support that selection.

For a documented PVDF ultrafiltration configuration, the membrane description alone should not be treated as proof that every project water-quality requirement will be met.

Raw-Water Information Table

Information	What to provide	What to clarify
Source	Source type and expected supply arrangement	Whether the source may change
Sampling point	Location on a process sketch	Whether it represents the proposed package inlet
Sampling date	Date and available operating context	Whether conditions were typical
Existing treatment	Treatment before the sample location	Whether the equipment will remain in service
Laboratory report	Original report, units and available method information	Missing or unclear results
Variation	Available reports and clearly labelled observations	Whether additional representative data are needed
Product-water use	Intended use and project quality requirements	Selection and acceptance basis

This table organizes an RFQ. It does not replace a project-specific sampling plan.

RFQ Checklist

Include:

Project location and intended water use.
Required treatment capacity and operating schedule.
Expected raw-water source.
Original laboratory report.
Sampling date and location.
A sketch showing the sample point and proposed equipment inlet.
Existing treatment upstream of the sample.
Available seasonal or operating records.
Product-water quality requirements.
Missing information and the party responsible for obtaining it.

Customized based on raw water conditions, required capacity and project requirements.

Ask the supplier to list its assumptions and distinguish a preliminary configuration from a selection supported by the required project information.

FAQ

Is one laboratory report always enough?

That must be assessed for the project. Provide the sampling context and known variation, then ask the responsible technical parties whether additional information is required.

Can I send a report from water after an existing filter?

Yes, but identify the sampling point and upstream treatment. Ask whether that water represents the proposed equipment feed.

What if the source changes during the year?

Describe the expected sources and provide available records for each. Ask which source conditions the proposal covers.

Can a supplier finalize the system without a water-quality target?

The intended use and acceptance requirements need to be defined. Request a proposal that clearly identifies unresolved requirements rather than assuming a general description is sufficient.

Prepare Your Project Enquiry

Send Grace Wang Environmental your original water report, sampling-point information, required capacity and intended water use. Request a proposal that identifies the assumed feed conditions and any additional information needed for selection.

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