S1.2.2.1 Use lead-free Inspect Roof surface Replace materials on the condition of in poor inappropriate Lead-containing roof (paints, the roof condition and materials. materials (paint, flashings, surface at needs nails or flashing) Repaint roof, or least annually. repainting or used in roof Keep roof surface replace roof. replacing. construction; well maintained. Test for heavy Replace guttering metals in roof Leaded paint Use plastic guttering. constructed paint (one-off test on roof guttering. from corrodible test probably paint is material (eg, sufficient). positive. copper). Heavy metals Heavy metal in the water if there is a likely in the water source of them are more than on the roof. 50% of their MAV. Cases of lead (or other heavy metal) poisoning, but be aware that such cases may have other causes. Event: CONTAMINATION OF THE WATER WHILE IN THE STORAGE TANK Possible hazards: Germs; plasticisers (di (2-ethylhexyl) phthalate), possible reduced disinfection efficacy by chlorine because of high pH. Level of risk: High S1.2.3.1 Ensure the Monthly tank E. coli is Disinfect tank storage is inspection. detected in (1 mg/L of Animal or covered. 100 ml sample. chlorine for human access water, possibly to storage tank Install mesh on quality. Dead animals up to 5 mg/L if (see S1.2.3.5). vents, overflow, in tank. water is poor etc. Mesh/grills quality) Undertake regular disturbed by depending on tank inspections animals to get water quality. (monthly). access. Replace or For wooden Unpleasant provide mesh taste and where install metal odour. necessary. band around wooden tanks to Water turbid. Prepare tank prevent animal inspection access from schedule. ground level remove vegetation near tanks install internal liner for tank roof.
S1.2.2.1 Lead-containing materials (paint, nails or flashing) used in roof construction; guttering constructed from corrodible material (eg, copper). Use lead-free materials on the roof (paints, flashings, Keep roof surface well maintained. Use plastic guttering. Inspect condition of the roof surface at least annually. Test for heavy metals in roof paint (one-off test probably sufficient). Heavy metals in the water if there is a likely source of them on the roof. Roof surface in poor condition and needs repainting or replacing. Leaded paint test on roof paint is positive. Heavy metal in the water are more than 50% of their MAV. Cases of lead (or other heavy metal) poisoning, but be aware that such cases may have other causes. Replace inappropriate materials. Repaint roof, or replace roof. Replace guttering. Event: CONTAMINATION OF THE WATER WHILE IN THE STORAGE TANK Possible hazards: Germs; plasticisers (di (2-ethylhexyl) phthalate), possible reduced disinfection efficacy by chlorine because of high pH. Level of risk: High S1.2.3.1 Animal or human access to storage tank (see S1.2.3.5). Ensure the storage is covered. Install mesh on vents, overflow, etc. Undertake regular tank inspections (monthly). For wooden install metal band around wooden tanks to prevent animal access from ground level remove vegetation near tanks install internal liner for tank roof. Monthly tank inspection. quality. E. coli is detected in 100 ml sample. Dead animals in tank. Mesh/grills disturbed by animals to get access. Unpleasant taste and odour. Water turbid. Disinfect tank (1 mg/L of chlorine for water, possibly up to 5 mg/L if water is poor quality) depending on water quality. Replace or provide mesh where necessary. Prepare tank inspection schedule.
source-roof-catchments-feb14-v2.docx