Laboratory for the Analysis of Water for Human Consumption

The Lisbon Laboratory has been accredited in accordance with standard NP EN ISO/IEC 17025, with
Certificate No. L0242 (
Technical Annex L0242-1) since 1999, to analyse 171 parameters/species, including the collection of samples. The laboratory conducts the analytical control of the quality of the water collected, treated, put into the network and distributed throughout the whole company system right up to the customer’s faucet.
The Vale da Pedra Laboratory was accredited in 2008 in accordance with standard NP EN ISO/IEC 17025, with the support of incentives granted under the PRIME programme. It holds Certificate No. L0242 (
Technical Annex L0242-2), for 19 parameters, 13 of which in the physical-chemical area and 6 in the microbiology area. The laboratory conducts the analytical control of water collected from the river Tagus, treated in the Vale da Pedra Water Treatment Plant and introduced into the company’s system, as well as that for the waters collected and introduced in the network in the Vila Franca de Xira area.
For further information on the accreditation of the laboratories for EPAL water testing, please
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Water Meter Laboratories
The Water Meter Laboratory was accredited on 07 July 1994 by the IPQ (Portuguese Quality Institute), in accordance with standard NP EN ISO 45001, to carry out tests on the water meters. It is currently accredited by IPAC, in accordance with standard NP EN ISO/IEC 17025, as a Calibration Laboratory (
Accreditation Certificate No. M0022 and Technical Annex No. M0022-1) and Test Laboratory (
Accreditation Certificate No. L0407 and Technical Accreditation Annex No. L0407-1) for mechanical and non-mechanical clean cold-water meters.
The Water Meter Laboratory has been recognised by the IPQ as a Water Meter Metrological Verification Body since October 1994, which enables it to act as third party laboratory in carrying out operations of first checks of cold drinking water meters that are part of the public service network (IPQ Order No. 1340/2014 of 06 December 2013). EPAL is authorised to use its own seal as part of the metrological control operations of the water meters that it conducts.
EPAL has been recognised since 1990 as a Qualified Water Meter Repair Body, which covers the repair activities carried out by the water meter maintenance technical area, which is made up of a Water Meter Workshop and Laboratory.