Diagnostik- & Forschungsinstitut für Hygiene, Mikrobiologie und Umweltmedizin

Standardized methods and governmental quality control (accredited according to EN ISO/IEC 17020 and EN ISO/IEC 17025) guarantee professional sample collection and high-quality chemical and microbiological analysis and reports.

We are happy to assist you with technical questions and can provide expertise, assessments and consulting regarding drinking water, bathing water and surface water testing.

The assessments we make can also be used as requested by agencies such as the food safety agency or building authority.

Range of services

Drinking water

Drinking water testing according to the Drinking Water Ordinance (TWV)

  • Minimum testing
    • Chemical parameters:
      • Temperature
      • Color, appearance, taste
      • Coloring (436nm)
      • pH value
      • Electrical conductivity (20°C)
      • Calcium, magnesium, sodium, potassium
      • Total water hardness
      • Carbonate hardness
      • Acid capacity
      • Iron, manganese, ammonium, nitrite, nitrate, chloride, sulfate
      • TOC (total organic carbon)
    • Bacteriological parameters
      • CFU 22 (colony forming units at 22°C incubation temperature)
      • CFU 37 (colony forming units at 37 °C incubation temperature)
      • Escherichia coli
      • Enterococci
      • Pseudomonas aeroginosa (after treatment)
      • Clostridium perfringens (after treatment)
    • Other parameters on request
  • Routine testing
    • Chemical parameters:
      • Temperature
      • Color, appearance, taste
      • Coloring (436nm)
      • pH value
    • Bacteriological parameters
      • CFU 22 (colony forming units at 22°C incubation temperature)
      • CFU 37 (colony forming units at 37 °C incubation temperature)
      • Escherichia coli
      • Enterococci
      • Pseudomonas aeroginosa (after treatment)
      • Clostridium perfringens (after treatment)
    • Other parameters on request
  • Extensive monitoring (complete testing)
    • Chemical parameters:
      • Temperature
      • Color, appearance, taste
      • Coloring (436nm)
      • pH value
      • Electrical conductivity (20°C)
      • Calcium, magnesium, sodium, potassium
      • Total water hardness
      • Carbonate hardness
      • Acid capacity
      • Iron, manganese, ammonium, nitrite, nitrate, chloride, sulfate
      • TOC (total organic carbon)
      • Bromate, fluoride
      • Aluminum, nickel, chrome, arsenic, mercury, antimony, selenium, zinc, copper, lead, cadmium, uranium
      • Aromatic hydrocarbons
      • Cyanide, boron
      • Halogenated hydrocarbons
      • Pesticides
    • Bacteriological parameters
      • CFU 22 (colony forming units at 22°C incubation temperature)
      • CFU 37 (colony forming units at 37 °C incubation temperature)
      • Escherichia coli
      • Enterococci
      • Pseudomonas aeroginosa
      • Clostridium perfringens
    • Other parameters on request

Home wells (home installation) and springs

  • Well depth and water level testing
  • Water treatment testing
    • During the planning of softening plants, UV disinfection plants, deacidification plants, deferrization plants and demanganization plants
  • Inspection of reservoir facilities (elevated tanks, ponds)
  • Inspection of wells and springs
  • Industrial and irrigation water testing
  • Drinking water quality testing (minimum testing)
  • Chemical parameters:
    • Temperature
    • Color, appearance, taste
    • Coloring (436nm)
    • pH value
    • Electrical conductivity (20°C)
    • Calcium, magnesium, sodium, potassium
    • Total water hardness
    • Carbonate hardness
    • Acid capacity
    • Iron, manganese, ammonium, nitrite, nitrate, chloride, sulfate
    • TOC (Total organic carbon)
  • Bacteriological parameters
    • CFU 22 (colony forming units at 22°C incubation temperature)
    • CFU 37 (colony forming units at 37°C incubation temperature)
    • Escherichia coli
    • Enterococci
    • Pseudomonas aeroginosa (after treatment)
    • Clostridium perfringens (after treatment)
  • Other parameters on request

Bathing water (indoor swimming pools, outdoor swimming pools, thermal baths)

Bathing water testing and inspection according to the Bath Hygiene Act (current version)
We offer regular, annual/biannual/quarterly testing as standing order solutions.


Testing before discharge into retaining basins

 

  • Chemical parameters:
    • Temperature
    • pH value on site
    • Free chlorine
    • Bound chlorine
    • Turbidity
    • pH value
    • Electrical conductivity (20°C)
    • Calcium, magnesium, sodium, potassium
    • Total water hardness
    • Carbonate hardness
    • Acid capacity
    • Iron, ammonium, nitrite, nitrate, chloride, sulfate
    • Aluminum
    • TOC (total organic carbon)
    • Trihalomethane (THM)
  • Bacteriological parameters
    • CFU 37 (colony forming units at 37°C incubation temperature)
    • Escherichia coli
    • Enterococci
    • Pseudomonas aeroginosa
  • Other parameters on request

Bathing water (small swimming pond)

  • Chemical parameters:
    • Temperature
    • Water transparency
    • Oxygen (%, mg)
    • Color
    • pH value (20°C)
    • Electrical conductivity (20°C)
    • Phosphorus
    • Ammonium
    • TOC (total organic carbon)
  • Bacteriological parameters
    • Escherichia coli
    • Enterococci
    • Pseudomonas aeroginosa (after treatment)
    • Fecal coliforms
  • Other parameters on request
  •  

Legionella analysis

Testing of:    

  • Hot water
  • Water heaters
  • Cooling towers
  • Dental operatories
  • Car wash facilities

If the Legionella test is positive, the serogroup is determined.

Sample collection and inspection

  • Drinking water sample collection according to ÖNORM M 5874. Parameters investigated on site:
    • Temperature
    • Organoleptics
    • pH value
    • Electrical conductivity (20°C)
    • Free chlorine
    • Bound chlorine
    • Oxygen content
    • Well depth and water level
  • Drinking water inspection:
    • Water supply facilities
    • Water treatment facilities
    • Springs
    • Wells
    • Artesian wells
    • Storage tanks: elevated tanks, underground tanks, etc.
  • Bathing water sample collection according to BGBl. II no. 321/2012 (2012-9) Bathing water inspection
    • Pools
    • Filter monitoring
    • Water treatment
    • Hydrological cycle
    • Surveys according to the Bath Hygiene Act
  • Bathing water sample collection (small bathing pond) according to ÖNORM ISO 5667 Parameters investigated on site:
    • Temperature
    • Oxygen content
    • Water transparency
    • Coloring
    • Oil film
    • Solids
  • Delivered samples (by arrangement with the lab)
  • Self-collection of samples for information (report)
  • See sample collection leaflet and water testing submission form

Special tests

  • Heating water: Testing of heating water according to ÖNORM H 5195-1
  • Mineral water: Testing of mineral water according to the Mineral and Spring Water Ordinance
    • Ongoing quarterly monitoring
    • Internal monitoring
    • Hygiene monitoring on request
  • Ultrapure water: Testing of ultrapure water according to ÖNORM EN 285 (current version)
    • Testing of feedwater and condensates in sterilizers and steam boilers
    • Fully desalinated water
    • Quality monitoring of ultrapure water
  • Surface contact cultures
  • Microbiological hygiene monitoring of surfaces to determine the success of cleaning and disinfection

Environmental hygiene

  • Microbiological testing of environmental samples (on request)
  • Testing of sewage sludge according to Klärschlammverordnungen (sewage sludge ordinances) – ÖNORM S 2204, ISO 9308-2
  • Testing of cooling lubricants (ISO 9308-2, ISO 6222)
  • Testing of plant extracts according to MQM and SCCP guidelines

Area head

Franz Reinthaler 
T: +43 316 385 73620

Contact the lab

Neue Stiftingtalstraße 2 / Entrance A / Second floor, 8010 Graz
Mon.–Fri.: 9:00 AM–12:00 PM and 1:00 PM–4:00 PM  
T: +43 316 385 73614

Wasserlabor

Untersuchungs- und Beratungsstelle der Med Uni Graz.