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The Public Health and Safety Company™ NSF International Onsite Wastewater Treatment Unit Program Standards, Testing and Certification Update
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The Public Health and Safety Company™ NSF International Overview Standards development Current standards Standards in process Certification status New Technologies Other items of interest
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The Public Health and Safety Company™ NSF International EPA, State, Local Engineers, Academics, Consultants, Certifiers Regulators Users Manufacturers Consensus Standards: Key to Success – Stakeholder Involvement
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The Public Health and Safety Company™ NSF International NSF/ANSI Wastewater Standards Standard 40: Residential Wastewater Treatment Systems Standard 41: Non-Liquid Saturated Treatment Systems Standard 46: Evaluation of Components and Devices Used in Wastewater Treatment Systems Standard 245: Wastewater treatment systems – Nitrogen reduction
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 40 and 245 Scope 40: Any residential system with a treatment capacity of 400-1500 gpd; CBOD 5 and TSS reduction. Scope 245: Any residential system with a treatment capacity of 400-1500 gpd; Nitrogen reduction. Must also meet the requirements of Standard 40 Class I effluent.
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 40 and 245 Performance Testing Installed per manufacturer’s instructions. No restriction for seasons (or geography). Operated in accordance with manufacturer’s instruction. No service or maintenance during entire six month test. All test data reported. No allowance for discard of any data, except if test facility fails to provide an acceptable test.
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 40 and 245 Sampling 24 hour composite Standard 40: influent and effluent five days/week. Standard 245: influent and effluent three days/week. If concurrent: CBOD 5, TSS and pH five days/ week and N series three days/week (TKN, Ammonia-N and Nitrate/nitrite-N).
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 40/245 Influent Wastewater Characteristics BOD 5 100 mg/L - 300 mg/L TSS 100 mg/L - 350 mg/L TKN 35 mg/L – 70 mg/L (as N; can be supplemented - urea) Alkalinity > 175 mg/L (can be supplemented - sodium bicarbonate) Temperature 10 – 30 C (sampling suspended below 10 C) pH 6.5 – 9
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The Public Health and Safety Company™ NSF International Nitrogen Influent Strength MASSTC test site Average 37 mg/L British Columbia test site Average 39 mg/L Texas test site Average 38 mg/L PA field study (11 homes) Average 44 mg/L Idaho field study (18 homes) Average 38 mg/L
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 40 Effluent criteria: Class 1 CBOD 5 25 mg/L 30-day average 40 mg/L 7-day average TSS 30 mg/L 30-day average 45 mg/L 7-day average Effluent criteria: Class 2 CBOD 5 Not more than 10% >60 mg/L TSSNot more than 10% >100 mg/L pH: 6.0 – 9.0 All performance data reported.
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The Public Health and Safety Company™ NSF International NSF/ANSI Standard 245 Effluent criteria ( overall test average when performed separate from Standard 40) CBOD 5 25 mg/L TSS 30 mg/L Nitrogen: minimum 50% reduction (design loading sample periods only – stress data reported) pH: 6.0 – 9.0 All performance data reported.
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The Public Health and Safety Company™ NSF International Standard 40 and 245 Test Facilities Present Test Sites: Waco, Texas Baton Rouge, Louisiana Buzzards Bay, Massachusetts Vancouver, British Columbia Quebec (BNQ) Germany (PIA)
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The Public Health and Safety Company™ NSF International Standard 40; CBOD 5 /TSS Class I: 40 companies; 464 Systems Standard 245; Nitrogen 8 companies; 49 systems Certification Status of Treatment Systems
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The Public Health and Safety Company™ NSF International Draft standard: Alternative Media Systems (NSF 240) Alternatives to traditional stone/gravel Controlled comparison against gravel Hydraulic performance (LTAR) One year test 5/6 replicates of each
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The Public Health and Safety Company™ NSF International Test Cell Wastewater Feed Observation Ports Perforated PVC Pipe Filter Fabric Double Washed Stone Aggregate ¾”- 1-1/2” 2’ of C33 Concrete Sand 9” layer of 1/8” peastone over entire module 26 ft. Bottom Drain ( to percolate sampling port) 40 mil Impervious Liner PROFILE VIEW
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The Public Health and Safety Company™ NSF International Draft standard: Alternative Media Systems (NSF 240) Final draft under review by the task group. Expected ballot to the Joint Committee this year. Results: % reduction in sizing as compared to the control (measured to the nearest 5% increment)
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The Public Health and Safety Company™ NSF International Draft Standard: Field Performance Verification (NSF 360) Same systems as covered under Standards 40/245 Goal: Bridging lab versus field performance
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The Public Health and Safety Company™ NSF International Draft Standard: Field Performance Verification (NSF 360) Field evaluation of 20 systems minimum North/South geography desired Operating for 6 months, current maintenance contract Screening process to eliminate unusual cases. Sampling; quarterly for one year Primary: BOD 5, TSS Data only; no pass/fail criteria
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The Public Health and Safety Company™ NSF International Draft Standard: Onsite Recycle/Reuse Treatment Technologies (NSF 350) Increasing need as potable water becomes a more precious resource. Increasing interest as we enter the age of green/sustainability. LEED Credits
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The Public Health and Safety Company™ NSF International Draft Standard: Onsite Recycle/Reuse Treatment Technologies Variable influents Rainfall Storm runoff Graywater Blackwater
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The Public Health and Safety Company™ NSF International Draft Standard: Onsite Recycle/Reuse Treatment Technologies Variable effluent applications Surface irrigation Lawn versus Crops Toilet flushing Car washing Fire protection Advantage of onsite: select source treatment and select reuse
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The Public Health and Safety Company™ NSF International Draft Standard: Onsite Recycle/Reuse Treatment Technologies Risk Category Fecal Coliform cfu/100 mL BOD 5 (mg/L) TSS (mg/L) Total N (mg/L as N) Turbidity (NTU) Very low< 100,000< 30 NR Low< 2005 – 30 NR Moderate2.2 – 1005 – 30 NR HighND5 – 10 102 – 10 Drinking water TBD NR – Not required ND – Non detect
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The Public Health and Safety Company™ NSF International Get Involved! Standards impact your agency and your business. The process is open if you want to contribute. At a minimum, monitor what is on the horizon to know the direction standards are moving. Your best resource: http://standards.nsf.org/home
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The Public Health and Safety Company™ NSF International Other Items of Interest Flushability; disposability, compostability services
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The Public Health and Safety Company™ NSF International Other Items of Interest Protocol certifications NSF Protocol P150; Evaluation of Bathroom Tissues Disposed into Septic Systems
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The Public Health and Safety Company™ NSF International Other Items of Interest Protocol certifications NSF Protocol P340; Septic Tank and Grease Trap Solid and Liquid Separating Devices
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The Public Health and Safety Company™ NSF International Other Items of Interest New protocol certifications NSF Protocol P157; Electrical Incinerating Toilets - Health and Sanitation
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The Public Health and Safety Company™ NSF International
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The Public Health and Safety Company™ NSF International Contact Information Tom Bruursema General Manager (734) 769-5575 bruursema@nsf.org Sharon Steiner Business Unit Manager (734) 827-6846 steiner@nsf.org Ron Grimes Regulatory Affairs Manager (734) 827-6863 rgrimes@nsf.org NSF Web Site: www.nsf.org Toll free 800-673-6275
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