Water use, whether for general purposes or human consumption, is regulated by specific legislations and monitored by state and city agencies. The final purpose is to ensure the quality and control the pollution, while respecting the environment and the consumers, and ensuring the sustainable use of water sources.

Bachema is NBR ISO/IEC 17025-certified. We have the technical capability to carry out environmental sampling and chemical analyses of fresh, salt and brackish water. Most analyses conducted in our laboratory are of fresh water. We offer a full scope of physico-chemical analyses for groundwater and surface water, including:

  • VOC – volatile organic compounds;
  • SVOC – semi-volatile organic compounds;
  • TPH – total petroleum hydrocarbons;
  • PAH – polycyclic aromatic hydrocarbons;
  • PCB – polychlorinated biphenyls;
  • organochlorine and organophosphate pesticides;
  • heavy metals;
  • salts and anions;
  • pH, among others.

Bachema is in full compliance with all current Brazilian regulations. We are proud to offer our clients the most reliable water analysis results for the following media:


Bachema conducts analyses of groundwater from (deep or shallow) artesian wells and monitoring wells, aimed at ensuring the protection of the aquifer throughout a well’s service life.

Groundwater quality in an artesian well should be assessed often. The following regulations must be complied with over the service life of a well:

  • DAEE Ordinance No. 717, of Dec/12/1996 – regulates water abstraction grants for the right to use water resources, i.e., for well construction – the technical report to apply for a permit to bore and operate a well must include physico-chemical and microbiological analyses of the water.
  • CETESB Board Decision DD No. 256/2016/E, of Oct/22/2016 – Guiding Levels for Soil and Groundwater in the State of São Paulo.
  • CONAMA Resolution No. 396, of Apr/03/2008 – establishes parameters for groundwater classification, provides environmental guidelines for groundwater compliance, pollution prevention and pollution control.
  • Consolidation Ordinance MS-GM No. 5 (former Ordinance 2914) – establishes procedures for the control and survey of the water quality of artesian wells intended for human consumption and provides potability standards.
  • CONAMA Resolution No. 420 of Dec/28/2009 – establishes screening criteria and screening levels for soil and groundwater quality.

Surface water

Surface water is the water from what are technically known as water bodies, i.e.: rivers, creeks, ponds, lakes, streams, etc. The Brazilian National Water Agency (ANA) classifies water bodies according to target quality and intended use.

Bachema conducts surface water analyses in line with the following regulations:

  • CONAMA Resolution No. 357, of Mar/17/2005 – classifies surface water bodies, provides environmental guidelines, and establishes standards for wastewater discharge.
  • CONAMA Resolution No. 430, of May/13/2011 – establishes conditions, parameters, standards and guidelines for the management of wastewater discharges into water bodies.

Other regulations may apply depending on water use (e.g.: human consumption).

Water intended for human consumption and potability standards

Potable water intended for ingestion, or for the preparation and production of food and personal hygiene products, must be analyzed, regardless of its source.
Bachema conducts water potability analyses, as per the regulations that control water potability, including:

  • Consolidation Ordinance MS-GM No. 5 (former Ordinance 2914) – establishes procedures to control and survey the water quality of artesian wells intended for human consumption, and provides potability standards.
  • Resolution SS 65, of Apr/12/2005 – establishes procedures and responsibilities associated with the control and surveillance of potable water quality in the state of São Paulo, in addition to making other provisions.