Listed below are the general endorsement categories. Under each general category is a list of the endorsement sub-categories (unit processes) associated with each general category.
A. Disinfection
1. Hypochlorination (Calcium or Sodium), powder or liquid
2. Gas Chlorination
3. Ozonation
4. Reserved
5. Reserved
6. Chloramines
7. Chlorine Dioxide
8. Ultraviolet Light
B. Chemical Feed
1. Lime - Soda Ash Addition
2. pH Adjustment
3. Inhibitor - bimetallic phosphate, hexametaphosphate, orthophosphate, polyphosphate
4. Sequestering
5. Permanganate
6. Reserved
7. Fluoridation
C. Filtration
1. Activated Carbon, powder or granulated
2. Sand - Pressure, Rapid, Slow
3. Reverse Osmosis
4. Greensand
5. Activated Alumina
6. Ion Exchange
7. Cartridge
8. Reserved
9. Ultrafiltration
10. Microfiltration
D. Surface Water Operations
1. Algae Control
2. Coagulation
3. Flocculation
4. Rapid Mix
5. Sedimentation
6. Sludge Treatment
E. Other Specified Treatment
1. Aeration - Cascade, Diffused, Packed Tower, Slat Tray or Spray
2. Dechlorination - using reducing agents, sodium bisulfate, sodium sulfide, or sulfur dioxide
3. Distillation
4. Reserved
5. Electrodialysis
F. Distribution
1. Flow less than 500 gpm at 20 psi
2. Flow greater than 500 gpm at 20 psi
G. Approved Sampler/Tester
Del. Admin. Code tit. 16, Department of Health and Social Services, Division of Public Health, Health Systems Protection (HSP), 4463, app A
17 DE Reg. 924(3/1/2014)
23 DE Reg. 928( 5/1/2020) (Final)