HTM 2030 WATER REGULATIONS Youre here: Home HTM Regulations HTM WATER REGULATIONS HEALTHCARE TECHNICAL MEMORANDUM (HTM) The healthcare technical memorandum (HTM) provides guidance on disinfection processes. Specifically it refers to the validation of all types of ultrasonic cleaner and washer disinfector used in the healthcare sector. HTM provides guidance on contamination within steam supply, and also defines the specifications for ‘clean steam’ used within the healthcare sector. HTM defines microbiological specifications that washer disinfectors must meet to ensure patient safety. The final rinse water after the disinfection stage has occurred, must meet quality standards to minimize microbial contamination of disinfected products. It is recommended that this monitoring be performed on a weekly basis. SPECIFICATION FOR ENDOSCOPY Taken from Health Technical Memorandum 01-06:Decontamination of flexible endoscopes: Part B: Section 2.2 APPLICATION REQUIREMENT Initial flush:- Hardness less than 200 mg/L CaCO3 Intermediate flush:- Hardness less than 200 mg/L CaCO3 Water for diluting disinfectants and detergents:- Hardness less than 50 mg/L CaCO3 Final rinse-water(see also Table 1 in HTM01-06 Part E – ‘Testing methods’) Hardness less than 50 mg/L CaCO3 TOC less than 1 mg/L Conductivity less than 40 µS/cm, unless disinfectant added Note: If any of the above parameters for the final rinse-water are above the stated limits, additional water analysis will be required to determine the source of the problem (for example, pH, chloride, heavy metals etc). The criteria and parameter limitations for other contaminants including salts not listed in this Table should accord with the rolling revision of the WHO guidelines for drinking water quality. In light of the use of variable supply quality through the recently established national water grid, it is appropriate for providers to periodically discuss this issue with their water supplier. Tests for hardness and electrical conductivity are detailed in HTM 01-06 Part E – ‘Testing methods’. Taken from Health Technical Memorandum 01-06:Decontamination of flexible endoscopes: Part E: Section 6.3 Water test Satisfactory results Frequency Total organic carbon Less than 1 mg/l Yearly Appearance) Clear,bright and colourless Yearly pH 5.5 to 8.0 Yearly Electrical Conductivity Less than 40 µS/cm at 25°C Weekly Hardness Less than 50 mg/l CaCO3 Weekly (if appropriate) Total viable count (TVC) Less than 10 cfu/100ml acceptable Weekly Enviromental mycobacteria Non-detected in 100 ml samples Quarterly Pseudomonas aeruginosa Non-detected in 100 ml samples Quarterly SPECIFICATION FOR STERILE SERVICES Taken from Health Technical Memorandum 01-01: Management and decontamination of surgical instruments: Part D: Section 3.24 APPLICATION REQUIREMENT Cold water:- Flushing Potable water:- Flushing/washing Soft potable water (<50mg/L / CaCO3):- Cleaning with detergent or enzymatic cleaners Softened water-based exchange softener:- Desirable in all water >50mg/L/ CaCO3 Essential in all water >125mg/L / CaCO3 for use in WDs Deionised water:- Final rinse water in all WDs Thermal disinfection in all WDs Reverse osmosis:- Final rinse water in all WDs Thermal disinfection in all WDs Note:- This table shows suitable applications for the various qualities of water commonly available. Although water of lower quality may be used, this will normally require additional chemical additives and might entail some impairment of the WD performance. The terms “softened”, “deionised” and “reverse osmosis” refer to defined purification processes. Taken from Health Technical Memorandum 01-01: Management and decontamination of surgical instruments: Part D: Section 3.4 Determinant and unit Maximum permitted values Final rinse Other stages Appearance Clear, colourless – Degree of acidity(pH) 5.5 to 8.0 – Conductivity at 25°C (µS/cm) 30 – Total dissolved solids (mg/100ml) 4 – Total hardness CaCO3 (mg/100ml) 50 210 Chloride, Cl(mg/l) 10 120 Heavy Metals, determined as Lead, Pb(mg/l) 10 – Iron, Fe (mg/l) 2 – Phosphate, P2O5 (mg/l) 0.2 – Sillicate, SiO2 (mg/l) 0.2 2 Total viable count (TVC) at 22°C (cfu/100ml) 100 – Total viable count (TVC) at 37°C (cfu/100ml) 100 – Bacterial endotoxins (EU/ml) 0.25 – LUBRON’S GUIDE TO WATER HYGIENE LEGISLATION IN THE HEALTHCARE SECTOR CONTACT SUPPORT PRIVACY POLICY UNITED KINGDOM Lubron UK Limited 8 Challenge Way, Hythe Hill, Colchester, Essex CO1 2LY T +44 1206 866444 E info@lubron.co.uk www.lubron.co.uk SCOTLAND Lubron Scotland Alba Centre, Alba Campus Rosebank, Livingston EH54 7EG T +44 1506 246190 E info@lubron.co.uk www.lubron.co.uk NETHERLANDS Lubron Waterbehandeling B.V. 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