The water purification It is an issue that has gained prominence in recent times, especially in Spain. This statement is essential because it captures the essence of the Royal Decree 3/2023, the new compliance regulation in Spain that establishes the technical and health criteria for drinking water quality, its monitoring, and its supply; it took effect in January of this year. Water treatment faces constant challenges, and with the entry into force of this regulation, the landscape changes dramatically.
Water quality in Spain faces multiple challenges. The Drought, exacerbated by climate change, reduces water availability and quality. Surface water sources, such as rivers and lakes, can be contaminated by industrial waste and chemicals. Furthermore, in January 2023, Royal Decree 3/2023 established stricter standards for drinking water quality, protecting public health and promoting a safe and sustainable water supply.
The entry into force of Royal Decree 3/2023 in January 2023 marked a significant step forward in ensuring the quality of drinking water for consumption in Spain. This new legal framework replaces the previous Royal Decrees 902/2018 and 140/2003 and transposes Directive (EU) 2020/2184.
What Changes Does Royal Decree 3/2023 Introduce?
Reduction of Maximum Contaminant Levels.
The New Decree lowers the upper limits of certain contaminants, such as arsenic, lead, or trihalomethanes. This is because these contaminants can have a negative impact on human health.
New Controller Parameters.
The decree includes new control parameters, such as the detection of microplastics or emerging substances.
Emphasis on Prevention.
The Royal Decree strengthens measures to prevent contamination of water intended for human consumption. It establishes measures to control sources of pollution, such as wastewater and industrial waste.
Changes in the new regulations regarding turbidity
The Royal Decree 3/2023 Article 36 provides that, for new or existing water intake structures, At least one filtration step must be performed before the water disinfection phase. appropriate, in these cases:
- a) Surface water intakes and spring water;
- b) Groundwater Intakes when the turbidity of the collected water exceeds 1 Nephelometric Turbidity Unit (NTU) in more than 5% of the annual samples, must be installed Filtration before January 2, 2024.
- c) Cwhen the health authority deems it appropriate as necessary, based on the risk assessment.
AZUD Solutions for Improving Water Quality
The technology solutions play an essential role in complying with these regulations. Specialized equipment, advanced filtration systems, and purification techniques are essential tools in this process. With water treatment as the primary goal, it is imperative that both public institutions and private companies collaborate to ensure that the water reaching our homes is safe and of high quality.
In AZUD We understand the importance of ensuring the quality of drinking water for consumption. Our experience in water treatment solutions allows us to offer effective solutions for maintaining water clarity and safety. Thanks to our extensive experience in water treatment, we have developed containerized solutions AZUD WATERTECH DW that meet today’s demands:
- Filtration in existing facilities and in new infrastructure.
- Ultrafiltration from surface water to improve turbidity.
- Specialized processes for the removal of arsenic, nitrates, and sulfates.

Our model of solutions includes systems that combine various technologies, from disc filtration through zeolite bed filtration to ultrafiltration and reverse osmosis. With these solutions, we guarantee that the water is not only safe to drink but also complies with all current regulations, including the recent Royal Decree 3/2023.

If you’d like to learn more about our containerized water treatment solutions or receive personalized advice from our team of experts, Contact AZUD We can’t wait to help you!











































































