Services / ISO 46001 certification
ISO 46001 water efficiency management certification, from $800
For factories, hotels, campuses and offices that want to manage water use in a planned way and show customers the results, with a certificate audited by EUROTECH.
From $800Certified by EUROTECH
- Accredited by IAB and INTAQS
- Issuing certificates since 2004
- Online or on-site audits worldwide
- Verify any EUROTECH certificate
What ISO 46001 certification covers
ISO 46001:2019 sets the requirements for a water efficiency management system. It helps any organization that uses water, whether in production, cooling, cleaning, irrigation, kitchens or bathrooms, to measure its use, find where water is wasted and improve efficiency over time. It does not cover drinking water quality or wastewater treatment, which are dealt with by other rules.
The core of the standard is the water review. You map where water comes from, how much each use consumes and where it goes, often as a water balance. From that you set water efficiency indicators, a baseline to compare against, objectives and action plans. The standard also asks you to consider alternative sources, such as rainwater harvesting or reuse, where they make sense.
The audit checks that this chain is in place and working: the data, the indicators, the actions and the results, inside a management system with the same structure as ISO 14001 and ISO 50001.
- Stage 1 review of the water review, water balance, indicators and baseline
- Stage 2 audit of monitoring, operational controls and action plans
- Certification decision and three-year certificate
- Certificate listed on our verification portal
- Yearly surveillance audits and recertification
The scope on the certificate names the sites and activities covered, so customers can see whether the water efficiency claim applies to the products or services they buy.
Options: on its own or with ISO 14001 and ISO 50001
Some organizations certify ISO 46001 on its own because water is their main resource issue, for example in water-stressed regions or water-intensive sectors such as food and beverage, textiles, hospitality and agriculture. Others add it to an ISO 14001 environmental system, where water is often already a significant aspect.
ISO 46001 and ISO 50001 work in a similar way, with a review, a baseline, indicators and improvement, and they often share metering and data systems. Running them together can reduce effort, especially where hot water or cooling links energy and water use.
Water data reviews can be done online. For sites with complex water systems, such as cooling towers, process water treatment or irrigation, part of the Stage 2 audit is best carried out on site, so the auditor can see meters, controls and the main water uses.
A common starting point is a simple metering plan: add meters to the largest uses first, then refine. The standard does not require meters everywhere, but it does require enough data to know where your water goes and whether efficiency is improving.
What decides the price
ISO 46001 certification with EUROTECH starts at $800. Audit time depends on how complex your water use is.
- Annual water consumption and number of water sources
- Number of significant water uses: process, cooling, cleaning, landscaping, sanitary
- Number of people whose work affects water use
- Sites in scope
- Integration with ISO 14001 or ISO 50001
We confirm audit days and every fee in a written quote. A water balance that reconciles with your bills and meter readings is the most useful document to have ready.
Sites that reuse water or treat it on site usually need more audit time, because the auditor reviews the extra systems, their monitoring and how reuse is counted in the indicators.
How ISO 46001 certification works with us
Step 1
Scope and quote
We agree the sites and water uses in scope and quote the ISO 46001 audit in writing.
Step 2
Stage 1 review
We review your water review, water balance, baseline and efficiency indicators.
Step 3
Stage 2 audit
The auditor traces significant water uses from meters to controls and action plans.
Step 4
Certificate and surveillance
After the decision you receive the ISO 46001 certificate, with yearly surveillance audits.
Water stress and rules differ by place
We certify ISO 46001 for organizations in the USA, Europe, Asia and Africa. The case for water efficiency depends heavily on location. In water-stressed regions, abstraction limits, drought restrictions and rising tariffs make efficiency a business continuity issue. In other regions, the drivers are customer expectations, sustainability reporting and cost.
Water abstraction permits, discharge consents and local water use restrictions are legal requirements your system must identify and comply with. During the audit we sample that compliance, along with any reporting you submit to authorities.
Customers and investors increasingly ask about water use in sustainability questionnaires and ESG reports. Data from an ISO 46001 system, with a baseline and indicators, answers those questions with evidence.
Seasonal patterns matter too. Irrigation, cooling and tourism-related demand often peak in summer, so indicators should allow for season, and the audit timing may be planned to see peak operation.
What to expect during the audit
The auditor will test the water balance. Expect questions on how you measure each significant use, how often meters are read, how unmetered uses are estimated and how the total compares with what the utility bills show. Large unexplained differences often point to leaks or missing meters.
Next comes the link from data to action. The auditor will pick one or two significant uses and follow them: the indicator, the target, the actions taken and the results since the baseline. Operational controls are checked too, such as leak detection routines, cleaning procedures that limit water use and maintenance of water-using equipment.
Procurement is reviewed as well. The standard expects water efficiency to be considered when you buy water-using equipment or design new facilities, so be ready to show a recent purchase or project where water use was part of the decision.
Staff awareness is checked through short interviews: whether operators know the main water uses in their area, what to do when they see a leak and how to report it.
Findings are graded as major or minor, and the certification decision rests on the evidence. You receive a written report explaining each finding.
Keeping the certificate
Keep reading meters, keep the water balance current and review the baseline when something significant changes, such as a new production line or a change in occupancy. Take water performance to management review and update action plans with owners and dates.
Surveillance audits look at the trend in your water efficiency indicators and the actions behind it. Staff awareness matters as well: people who operate cleaning, cooling or irrigation systems should know which settings drive water use.
Share results with staff and, where useful, with customers. Visible progress keeps people engaged and gives you reliable figures for sustainability reports.
Over the cycle, extend metering where data is weakest.
Questions buyers ask
How much does ISO 46001 certification cost?
With EUROTECH it starts at $800. Water consumption, sources, significant uses, people, sites and integration set the final price.
Does ISO 46001 cover drinking water or wastewater quality?
No. It covers water efficiency: how much water you use and how well. Quality and treatment are covered by other rules.
What is a water balance?
A map of where water comes from, how much each use consumes and where it goes, reconciled with meter readings and bills.
Can ISO 46001 be combined with ISO 14001?
Yes. Both use the same structure, and water is often already a significant aspect in an ISO 14001 system.
Which edition is current?
ISO 46001:2019.
Who uses ISO 46001?
Any water user, especially in water-intensive sectors such as food and beverage, textiles, hospitality, agriculture and campuses.
Related services
- ISO 14001 certification
From $800
- ISO 50001 certification
From $800
- ESG reporting
From $2,500
Get a quote for ISO 46001 certification
Tell us your company, sites and the standard you need. We reply with a written quote and the audit plan.
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