Water & Environment

The services of the Laboratoire départemental 31 EVA guarantee water quality and contribute to health and environment protection: microbiological research, physico-chemical analysis, metals and organic micropollutants, microbiological analysis, biological indicators ... Our staff will accompany you on a wide range of services.

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Sampeling and collection
Field Analyzes and measurements
Lab analyzes
Trainings
Reports and interpretation
Advice and accompaniment

More about…

SATESE (Technical support service for wastewater treatment plant operators)

Commissioned on the context of collective sanitation by the Haute-Garonne County Council and the Adour Garonne Water Agency, the laboratoire départemental 31 EVA, put its expertise in water and environmental analysis at the service of Information on wastewater treatment and manages the technical assistance service at wastewater treatment plants:

Expertise and follow-up of the facilities: functional evaluation and of quality of the discharges.
Computerized exchange transmission on water data (SANDRE format)
Purification performance aid files
Studies of new processes
Advice during construction, extension or improvement operations
Territorial animation
Implementation of the self-monitoring manual
Monitoring of the impact on the natural environment
Interventions on other departments

MVAB (Agricultural sludge valorization Mission)

Our environmental analysis professionals put their know-hows at the service of the information on the fate of sewage sludge:

Preparation of spreading plans in accordance with regulations: preliminary studies and declaration files
Organization of contruction sites, coordination of spinneret actors: sludge producers, users and service providers.
Consideration of hydrological, cultural and human criteria to determine soil suitability for spreading.
Writing of agronomic follow-up and annual synthesis reports.
Technical support to communities
Participation in the development and use of a national assessment grid for spreading practices.
Collection and analysis of all sludge spreading data from the department.

RSA (Station alert Network of Haute Garonne)

More than 90% of the water consumed in Haute-Garonne comes from rivers, canals, etc. These drinking water resources are monitored continuously thanks to 4 warning stations, preventing any accidental pollution that could quickly have important consequences for consumers.

Our services

MATRICES
SAMPLING AND COLLECTION
FIELD ANALYSES AND MESUREMENTS
LAB ANALYZES
TRAINING
REPORTS AND INTERPRETATION
ADVICE AND ACCOMPANIMENT

MATRICES

WATER rinking water, surface and underground natural water, bathing water (swimming pool and leisure areas), thermal and mineral water, industrial water, urban wastewater, waste water, hospital waters,…

ENVIRONNEMENT :

Waste: leach test, clinker, pre-landfill analyzes, deposits, compost, retention pond waste ...
Sludge: sludge from wastewater treatment plants (urban water), sludge from drinking water treatment plants, sludge from industrial wastewater treatment plants ...
Sediments and bryophytes: rivers, lakes, ports ...
Soils: for agriculture, environmental analysis ...

SAMPLING AND COLLECTION

The Laboratoire departmental 31 EVA has the necessary sampling equipment for water and different environmental matrices: it has equipped vehicles and boats adapted to all field interventions and to transport your samples in compliance with normative and regulatory requirements.

SAMPLING

Our "external intervention" team is specially trained and empowered to perform the sampling on all types of environmental matrices, instantaneously or continuously. They will advise you on the type of intervention that should be done thanks to their in-depth knowledge of the regulations and their field experience.

COLLECTION

Our staff can also go directly to your site and only collect your samples.

FIELD ANALYSES AND MESUREMENTS

FIELD ANALYSES

The field analyzes give an overview at the time of sampling: PH, conductivity, dissolved oxygen, oxidizing agents, turbidity, sulphides, TAC, redox, transparency, temperature, etc.

MESURES TERRAIN

Discharge flow measurements of free flowing or loaded wastewater
Measurements of stream flows with current meter
Piezometric hight
Measurements with defined duration recording (ph, flow, temperature, oxygen, etc.)
Depth profiles of water bodies
Oxygenation tests
Bathymetries
Etc.

LAB ANALYZES

PHYSICO-CHEMICAL ANALYZES

Thanks to its advanced equipment (lien vers page détaillée), the Laboratoire 31 EVA carries out efficient and reliable physico-chemical analyzes of water and environmental matrices:

General physico-chemistry: pH, nitrogen, conductivity, MES, COD, BOD, TOC, etc ...), AOX, different types of detergents, etc.
Organic micropollutants: Hydrocarbons, pesticides (herbicides, fungicides, insecticides, metabolites, etc.), polychlorinated biphenyls, polychlorinated biphenyls, polychlorinated biphenyls, Medicated residues, chlorophenols, organostan compounds, endocrynal disrupters, etc.
Metallic elements: detection of major presence and traces of all types of metals
Various analyzes: granulometry, loss on fire, flash point

MICROBIOLOGICAL ANALYSIS

The high-level teams in the lab carry out precise microbiological analyzes on all types of microorganisms using advanced and quick methods (malditoff spectrometry lien vers page): bacteria, yeasts and molds, parasites, viruses (including Norovirus), legionella (by regulatory technique or PCR), endotoxins, cyanobacteria, etc

Alternative rapid methods (24 h results) are also used to detect some organisms: coliform bacteria, Pseudomonas, Enterococci and Escherichia coli.

ECOTOXICOLOGICAL ANALYZES

In the field of ecotoxicology, the LD 31 EVA proposes a Daphnia mobility inhibition test defining the toxicity or not of a matrix (industrial or urban waste, waste, water, etc.).

MEASUREMENT OF HYDROBIOLOGICAL INDEXES

Our experts assess the quality of the environment through the determination of biological indexes (IGBN and IGB-DCE).

TRAINING

The laboratoire departmental 31 achieves quality training for the sampeling of legionella.

REPORTS AND INTERPRETATION

For any water or environmental analysis, the Laboratoire 31 EVA delivers an analyses report. In the case of complex interventions, a detailed report specifying the method of implementation, sampling and results can be sent.

Our teams are also at your disposal to help interpreting the results. They will be communicated to you by mail and / or e-mail and are available at any time in your personal space, which also allows you to have access to partial results when validations have be done.

ADVICE AND ACCOMPANIMENT

From the definition of your need to the results, our team supports you in every step and advises you to find the appropriate solutions for water and environmental analysis. For example, we can make for you a summary report of the results.

Some interventions

Legionella detection

Private project

You will find here soon a full description of one of our interventions in this field of activity.

Industrial water analyzes