5-Ton-Per-Hour RO System: What Water Quality Data You Need to Provide for a Quotation

When you ask for a 5-ton-per-hour RO system quotation, the first thing an experienced water treatment engineering team will ask is: “What does your source water look like?”

It’s not a delay tactic. It’s the difference between a system that runs reliably for years and one that fouls membranes, wastes water, and misses your production targets.

At Chuxin Mingwei, we design non‑standard, site‑specific water treatment solutions — not catalogue units. That means the quotation is always built around your actual water quality, not a generic assumption. Here’s what you need to provide.

Why “5 tons per hour” is not enough

Two facilities with the same 5 m³/h output requirement can end up with completely different system configurations — and costs — because their source water and target water quality are different.

As noted in industry practice, the same nominal capacity (tons/hour) can involve different raw water profiles, product water specifications, automation levels, material grades, and delivery scopes (FAQ-QUOTE-01). The pretreatment steps, membrane arrangement, recovery rate, and cleaning strategy all depend on what’s in the water.

Even if you’re treating municipal tap water, the quality varies by region. Groundwater often carries high hardness, iron, and manganese. Surface water can have seasonal turbidity spikes and organic matter. Without data, any quotation is a guess — and the risk lands on your operations.

What water quality data must you provide?

To prepare a 5‑ton‑per‑hour RO system quotation, we request the following minimum water quality parameters. A recent laboratory analysis report is ideal, but we can also guide you through a sampling plan if you don’t have one.

1. Source water type and location

Start with the basic: is it municipal tap water, well water, river water, lake water, or spring water? The water source category tells us what types of contaminants to expect.

2. Key chemical and physical parameters

These are the most impactful on RO system design:

• Turbidity (NTU)
• — high turbidity requires more robust multimedia filtration or ultrafiltration pretreatment.
• Total Suspended Solids (TSS)
• — similar to turbidity, affects the fouling potential.
• Total Hardness (as CaCO₃)
• — high hardness demands a softener, or you risk scaling on the membrane surface.
• Iron (Fe) and Manganese (Mn)
• — iron should be below 0.05 mg/L for RO feed; otherwise, you need manganese greensand or oxidation filtration.
• Total Dissolved Solids (TDS) or Conductivity
• — the primary driver for membrane selection and whether you need one-pass or two-pass RO.
• pH
• — affects scaling potential and RO membrane performance; extreme pH may require adjustment.
• Temperature
• — membrane output varies with temperature; cold water may need a pre-heater or larger membrane area.
• Free Chlorine / Residual Chlorine
• — if present, an activated carbon filter is mandatory to protect the membrane.
• Silica
• — high silica can cause irreversible scaling; often requires special antiscalant or pretreatment.
• Alkalinity
• — influences carbonate scaling risk.
• Microbiological indicators
• — if bacterial load is high, you may need UV or chemical dosing before RO.

This list reflects the reality that different source waters bring different levels of suspended solids, residual chlorine, hardness, iron, manganese, TDS, conductivity, and microbiological risk (ART-A01). Each parameter triggers a specific pretreatment component.

3. Target product water quality

What will the 5 m³/h permeate water be used for?

• Drinking water or bottled water
• — typically requires conductivity ≤ 10 µS/cm and microbial control.
• Food/beverage process water
• — may need specific mineral balance or TDS limits.
• Pharmaceutical or electronics
• — might require ≥ 15 MΩ·cm resistivity, pushing you toward RO + EDI or polishing mixed-bed.

Without a clear target, we cannot determine the required membrane array, post-treatment, or whether a simple single-pass RO is sufficient.

4. Peak and daily water demand

A 5 m³/h nominal output is one thing, but real usage is often different.

• What is your peak hourly demand?
• How many hours per day will the system run?
• Do you need a permeate water storage tank and distribution pump?

We also need to know if backwash water, CIP water, and cleaning cycles are part of the total water balance. These can affect the intake water quantity and pretreatment sizing.

Additional information that shapes the quotation

Beyond water quality, a few more details prevent surprises later:

• Available power supply
• (voltage, phase, frequency)
• Available floor space and ceiling height

*

• Drainage and waste handling

*

• Ambient temperature range

*

• Automation preference
• (basic PLC, full HMI, remote monitoring)

These don’t directly change the RO membrane design, but they influence the skid layout, instrumentation, and installation cost.

How the data actually affects cost and configuration

When you provide the complete water quality profile, the quotation becomes a technical configuration rather than a price estimate. For example:

• High hardness
• → softener added → higher capital but prevents membrane scaling.
• High iron/manganese
• → oxidation filter added → safeguards membrane life.
• Low TDS, good water
• → simpler pretreatment, possibly single-pass RO → lower cost.
• High TDS or target conductivity < 10 µS/cm
• → likely two-pass RO → higher cost, higher energy consumption.
• Cold source water
• → larger membrane area or a heat exchanger → increases footprint and cost.

Without this data, a low quotation might omit critical pretreatment, and a high quotation might include unnecessary stages. Both are bad for your project.

What if you don’t have a water analysis?

If you’re still at the planning stage, you can send us a raw water sample. We can arrange testing through a certified laboratory. Meanwhile, we can provide a preliminary budgetary quotation based on assumed water quality, clearly marked as “conditional on verification.” This gives you a range to start planning, but the final price and guarantees are only confirmed once the actual water quality is known.

Next step: submit your water quality data

For a 5-ton-per-hour RO system that reliably meets your production needs, your first step is to assemble the data points above. Send them to our engineering team, along with your target water quality and daily usage pattern.

We’ll return a configuration‑specific quotation that outlines the pretreatment, membrane array, instrumentation, controls, and installation scope — all matched to your real conditions.

Contact Chuxin Mingwei — a water treatment equipment manufacturer focused on application‑matched engineering, not click‑and‑buy pricing. Provide your water quality data and request a customized RO system quotation today.