1. IF ITS NOT A HOUSE, ITS HIGH STRENGTH Ron Suchecki Hoot Systems, LLC Lake Charles, LA

2. AWWARF - 1999 Domestic Water Use

3. Typical Domestic Sewage 200mg/L BOD/TSS (100-300) 40-70mg/L Total Nitrogen 1999 study, 75% of water use is NOT Toilet use

4. Progress In Water Savings Pre 1985 – Toilets were 5.0-7.0 GPF 1985-1991 Standard was 3.5 GPF 1991-1996 Standards were 3.5 to 1.6 GPF 1996-Present Standard is 1.6 Today there are new models that Range from single flush of 1.28 Gallons, and Dual Flush of less than a gallon & 0.5 GPF (#1)

6. Other Water Savings Washing Machines – Past 30-40 Gallons per load – Current – HE Top Load - 23 Gallons HE Front load - 15 Gallons Lavatory Faucets Shower Heads

7. What Does This Mean ? Sewage Strength Water Consumption These Same Factors apply outside the home as well.

8. Commercial Structures Bathing 19 % No Laundry 22% Leaks 14% Not from bathrooms 55% Bathroom Now - (Toilets/Sinks) may account for up to 100% of use Type of Building may increase strength – Food Prep – Food Waste – Self Serve

9. Ultra Flow Fixtures Water Conservation High Profile Remodeling at Higher Rate than Residential Waterless Urinals

10. How to Determine Flow & Strength Three Main Approaches to Design 1. Existing Data (Flow & Strength Samples) – Best

11. How to Determine Flow & Strength Three Main Approaches to Design 1. Existing Data (Flow & Strength Samples) – Best

16. Onsite Estimation Tables Three Main Approaches to Design 1. Existing Data (Flow & Strength Samples) – Best 2. Estimation from Like Properties Size Location Community all become major factors

17. Onsite Estimation Tables Three Main Approaches to Design 1. Existing Data (Flow & Strength Samples) – Best 2. Estimation from Like Properties Size Location Community all become major factors 3. State Tables or National Tables or Calculators

25. CIDWT Resources

28. Exit to CIDWT Form

33. BOD Loading Soda Soda – 75,000 mg/L BOD 75,000 BOD @32 oz. = Diluted into 2,000 gallons – 9.5 mg/L BOD Diluted into 500 gallons – 38 mg/L BOD

40. Any Questions