The Jamaican National Trade Effluent Standards (1995)

The Jamaican National Trade Effluent Standards (1995)

PARAMETER STANDARD LIMIT

Ammonia /Ammonium 1.0 mg/l

Barium 5.0 mg/l

Beryllium 0.5 mg/l

Boron 5.0 mg/l

Calcium No Standard

Chloride 300 mg/l

Colour 100 TCU

Detergent 15 mg/l or <0.015 kg/ 1000 kg product

Fluoride 3.0 mg/l

Iron 3.0 mg/l

Magnesium No standard

Manganese 1.0 mg/l

Nitrate (as Nitrate and Nitrite) 10 mg/l

Oil and grease 10 mg/l or <0.01kg/ 1000 kg product

pH 6.5 C 8.5

Phenols 0.1 mg/l

Phosphate 5.0 mg/l

Sodium 100 mg/l

Sulphate 250 mg/l

Sulphide 0.2 mg/l

TDS 1000 mg/l

Temperature 2 °C +/- average ambient temperature

TOC 100 mg/l

TSS All times <150 mg/l

Monthly average 50 mg/l

Heavy Metals

PARAMETER STANDARD LIMIT

Arsenic 0.5 mg/l

Cadmium 0.1 mg/l

Chromium 1.0 mg/l

Copper 0.1 mg/l

Cyanide (Free HCN) 0.1 mg/l

(Total CN) 0.2 mg/l

Lead 0.1 mg/l

Mercury 0.02 mg/l

Nickel 1.0 mg/l

Selenium 0.5 mg/l

Silver 0.1 mg/l

Tin No standard

Zinc 1.5 mg/l

Total Heavy Metals 2.0 mg/l

STREAM LOADING

PARAMETER STANDARD LIMIT

BOD5 < 30 mg/l

COD < 0.1kg/ 1000kg product or < 100 mg/l

DO > 4 mg/l

BACTERIOLOGY

PARAMETER STANDARD LIMIT

Total Coliform < 500 MPN/ 100ml

Fecal Coliform <100 MPN/ 100ml

ACRONYMS FOR PARAMETRS USED IN STANDARDS

BOD Biochemical Oxygen Demand

COD Chemical Oxygen Demand

DO Dissolve Oxygen

MPN Most Probable Number

TCU Total Colour Unit

TDS Total Dissolved Solids

TOC Total Organic Carbon

TSS Total Suspended Solids

FURTHER CLARIFICATION

Nitrates Refers to nitrogen in nitrates and nitrites

Phosphates Refers to phosphorous in phosphates

pH Measures acidity or alkalinity

Residual Chlorine Where natural treatment systems are designed to reduce coliform levels without the use of chlorine then the residual chlorine criteria would not apply