WATER ANALYSIS

SANS 241 DRINKING WATER

The South African National Standard (SANS) 241 Drinking Water Specification states the minimum requirements for potable water to be considered safe for human consumption.  The below tables outline these requirements.  Requirements include microbiological, physical, aesthetic and chemical properties.

The SANS 241 Drinking Water Compliance package includes:

MICROBIOLOGICAL DETERMINANDS

Determinand

Unit

Risk

Standard Limit

E. coli / faecal coliforms

(count per 100 mL)

Acute health

Not Detected

Cryptosporidium spp

(count per 10 Litre)

Acute health

Not Detected

Giardia spp

(count per 10 Litre)

Acute health

Not Detected

Total Coliforms

(count per 100 mL)

Operational

≤10

Heterotrophic Plate Count

(count per 1 mL)

Operational

≤1000

Somatic Coliphages

(count per 10 mL)

Operational

Not Detected

PHYSICAL AND AESTHETIC DETERMINANDS

Determinand

Unit

Risk

Standard Limit

Colour 

(mg / L Pt-Co)

Aesthetic

≤ 15

Conductivity @ 25˚C

(mS / m)

Aesthetic

≤ 170

Total Dissolved Solids

(mg / L)

Aesthetic

≤ 1200

Turbidity

(NTU)

Operational

≤ 1

(NTU)

Aesthetic

≤ 5

pH  @ 25˚C

(pH units)

Operational

≥ 5 to ≤ 9.7

CHEMICAL PROPERTIES – MACRO DETERMINANDS

Determinand

Unit

Risk

Standard Limit

Free chlorine

(mg / L as Cl2)

Chronic health

≤ 5

Monochloramine

(mg / L)

Chronic health

≤ 3

Nitrate

(mg / L as N)

Acute health

≤ 11

Nitrite

(mg / L as N)

Acute health

≤ 0.9

Combined nitrate plus nitrite (2)

(mg / L as N)

Acute health

≤ 1

Sulfate

(mg / L as SO4)

Acute health

≤ 500

(mg / L as SO4)

Aesthetic

≤ 250

Fluoride

(mg / L as F)

Chronic health

≤ 1.5

Ammonia     

(mg / L as N)

Aesthetic

≤ 1.5

Chloride

(mg / L as Cl)

Aesthetic

≤ 300

Sodium

(mg / L as Na)

Aesthetic

≤ 200

Zinc

(mg / L as Zn)

Aesthetic

≤ 5

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Risk

Standard Limit

Antimony

(μg / L  as Sb)

Chronic health

≤ 20

Arsenic

(μg / L  as As)

Chronic health

≤ 10

Barium

(μg / L  as Ba)

Chronic health

≤ 700

Boron

(μg / L  as B)

Chronic health

≤ 2400

Cadmium

(μg / L  as Cd)

Chronic health

≤ 3

Chromium  (Total)

(μg / L  as Cr)

Chronic health

≤ 50

Copper

(μg / L as Cu)

Chronic health

≤ 2000

Cyanide  (Recoverable)

(μg / L  as CN)

Acute health

≤ 200

Iron

(μg / L as Fe)

Chronic health

≤ 2000

(μg / L as Fe)

Aesthetic

≤ 300

Lead

(μg / L  as Pb)

Chronic health

≤ 10

Manganese

(μg / L as Mn)

Chronic health

≤ 400

(μg / L as Mn)

Aesthetic

≤ 100

Mercury

(μg / L  as Hg)

Chronic health

≤ 6

Nickel

(μg / L  as Ni)

Chronic health

≤ 70

Selenium

(μg / L as Se)

Chronic health

≤ 40

Uranium

(μg / L as U)

Chronic health

≤ 30

Aluminium            

(μg  / L as Al)

Operational

≤ 300

ORGANIC DETERMINANDS

Determinand

Unit

Risk

Standard Limit

Total Organic Carbon

(mg / L)

Chronic health

≤ 10

Trihalomethanes:

 

 

 

    Chloroform – CHCl3

(μg / L)

Chronic health

≤ 300

    Bromoform – CHBr3

(μg / L)

Chronic health

≤ 100

    Dibromochloromethane – CHBr2Cl

(μg / L)

Chronic health

≤ 100

    Bromodichloromethane – CHBrCl2

(μg / L)

Chronic health

≤ 60

Combined trihalomethanes (3)

(μg / L)

Chronic health

≤ 1

Total Mycrocystin

(μg / L)

Chronic health

≤ 1

Phenols as C6H5OH

(μg / L)

Aesthetic

≤ 10

RISK DETERMINANDS

Risk

Required compliance to SANS 241:2015

Acute health microbiological

99.00%

Acute health chemical

99.00%

Chronic health

97.00%

Aesthetic

95.00%

Operational

95.00%

GLOBAL G.A.P

GLOBAL G.A.P is an international Certification System comprising various standards and standardised compliance requirements, with the aim of advancing the principles of Good Agricultural Practice across a variety of Agricultural disciplines.

Our GLOBAL G.A.P water compliance testing packages are available to local GLOBAL G.A.P members, and incorporates the following packages and parameters:

The GLOBAL G.A.P. Standard Water Compliance package includes:

MICROBIOLOGICAL DETERMINANDS

Determinand

Unit

E. coli / faecal coliforms

(count per 100 mL)

Total Coliforms

(count per 100 mL)

Heterotrophic Plate Count

(count per 1 mL)

PHYSICAL AND AESTHETIC DETERMINANDS

Determinand

Unit

Conductivity @ 25˚C

(mS / m)

Alkalinity

(mg / L)

pH  @ 25˚C

(pH units)

CHEMICAL PROPERTIES – MACRO DETERMINANDS

Determinand

Unit

Nitrate

(mg / L as N)

Calcium

(mg / L as Ca)

Magnesium

(mg / L as Mg)

Sodium

(mg / L as Na)

Sodium Absorption Ratio (SAR)

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Antimony

(μg / L  as Sb)

Arsenic

(μg / L  as As)

Iron

(μg / L as Fe)

Manganese

(μg / L as Mn)

Mercury

(μg / L  as Hg)

Selenium

(μg / L as Se)

The GLOBAL G.A.P Irrigation Water Package consists of:

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Arsenic

(μg / L  as As)

Beryllium

(μg / L  as Be)

Cadmium

(μg / L as Cd)

Cobalt

(μg / L as Co)

Lead

(μg / L  as Pb)

Nickel

(μg / L  as Ni)

Selenium

(μg / L as Se)

Uranium

(μg / L as U)

Vanadium

(μg / L as V)

The GLOBAL G.A.P Domestic / Drinking Water Package contains:

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Antimony

(μg / L  as Sb)

Arsenic

(μg / L  as As)

Cadmium

(μg / L as Cd)

Lead

(μg / L  as Pb)

Mercury

(μg / L  as Hg)

Nickel

(μg / L  as Ni)

Selenium

(μg / L as Se)

Vanadium

(μg / L as V)

Please Note:  All testing packages may be customised based on specific audit / industry pre-requisites as required.

A link to the GLOBAL G.A.P website is provided below:

GLOBALG.A.P. (globalgap.org)

IRRIGATION

Whether for commercial crop irrigation, large scale plant cultivation, maintenance of sports fields, or domestic garden irrigation; “What you put in is what you get out” is nowhere more applicable than here, as the quality of our irrigation water directly affects the outcome of the crop or plant being grown.

The Irrigation Water package includes:

MICROBIOLOGICAL DETERMINANDS

Determinand

Unit

E. coli / faecal coliforms

(count per 100 mL)

Total Coliforms

(count per 100 mL)

Heterotrophic Plate Count

(count per 1 mL)

PHYSICAL AND AESTHETIC DETERMINANDS

Determinand

Unit

Conductivity @ 25˚C

(mS / m)

Alkalinity

(mg / L)

pH  @ 25˚C

(pH units)

Total Dissolved Solids

(mg / L)

Total Suspended Solids

(mg / L)

CHEMICAL PROPERTIES – MACRO DETERMINANDS

Determinand

Unit

Nitrate

(mg / L as N)

Calcium

(mg / L as Ca)

Chloride

(mg / L as Cl)

Fluoride

(mg / L as F)

Magnesium

(mg / L as Mg)

Sodium

(mg / L as Na)

Sodium Absorption Ratio (SAR)

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Boron

(μg / L as B)

Copper

(μg / L as Cu)

Iron

(μg / L as Fe)

Manganese

(μg / L as Mn)

Molybdenum

(μg / L as Mo)

BOREHOLE

Catalysed by extended periods of drought and water shortage across parts of the country, the utilisation of underground water sources by commercial as well as residential users has in recent years become a much more integral part of life, with many users choosing to not only utilise this water source industrially, but also as a potable water source.  It is essential to ensure that the quality of your borehole water is fit for the purpose for which it is intended.

The Borehole Water package includes:

MICROBIOLOGICAL DETERMINANDS

Determinand

Unit

E. coli

(count per 100 mL)

Total Coliforms

(count per 100 mL)

Heterotrophic Plate Count

(count per 1 mL)

PHYSICAL AND AESTHETIC DETERMINANDS

Determinand

Unit

Colour

(mg / L Pt-Co)

Conductivity @ 25˚C

(mS / m)

Corrosivity Index

Alkalinity

(mg / L)

pH  @ 25˚C

(pH units)

Total Dissolved Solids

(mg / L)

CHEMICAL PROPERTIES – MACRO DETERMINANDS

Determinand

Unit

Nitrate

(mg / L as N)

Calcium

(mg / L as Ca)

Chloride

(mg / L as Cl)

Fluoride

(mg / L as F)

Magnesium

(mg / L as Mg)

Potassium

(mg / L as K)

Sodium

(mg / L as Na)

Sodium Absorption Ratio (SAR)

Sulphate

(mg / L as SO4)

CHEMICAL PROPERTIES – MICRO DETERMINANDS

Determinand

Unit

Iron

(μg / L as Fe)

Total Iron

(μg / L as Fe)

Manganese

(μg / L as Mn)

Total Manganese

(μg / L as Mn)

EFFLUENT (Incl. Agricultural, IPW)

The Effluent package includes:

MICROBIOLOGICAL DETERMINANDS

Determinand

Unit

E. coli / faecal coliforms

(count per 100 mL)

Total Coliforms

(count per 100 mL)

PHYSICAL AND AESTHETIC DETERMINANDS

Determinand

Unit

Chemical Oxygen Demand (COD)

(mg / L)

Conductivity @ 25˚C

(mS / m)

pH  @ 25˚C

(pH units)

Total Suspended Solids

(mg / L)

CHEMICAL PROPERTIES – MACRO DETERMINANDS

Determinand

Unit

Calcium

(mg / L as Ca)

Magnesium

(mg / L as Mg)

Potassium

(mg / L as K)

Sodium

(mg / L as Na)

Sodium Absorption Ratio (SAR)

SPEAK TO US

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