| Regulation Title (click to view) | Adopting Agency | Date |
|---|
| Regulations Prohibiting Insanitary Toilets in Certain Places | Board of Public Health | 6/28/1937 |
| Regulations Governing Water Supplies and Sewage Disposal | Board of Public Health | 6/28/1937 |
| Policy for Individual Water Supplies and Sewage Disposal Systems | Board of Public Health | 9/27/1959 |
| Liquid Waste Disposal Regulations | Environmental Improvement Division | 9/14/1973 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 8/7/1979 |
| Liquid Waste Disposal Regulations Amendments | Environmental Improvement Board | 1/30/1980 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 10/10/1985 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 2/1/1990 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 11/30/1995 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 10/15/1997 |
| Liquid Waste Disposal Regulations Amendments | Environmental Improvement Board | 4/1/2004 |
| Liquid Waste Disposal and Treatment Regulations | Environmental Improvement Board | 9/1/2005 |
| Liquid Waste Disposal and Treatment Regulations Amendments | Environmental Improvement Board | 4/1/2007 |
| Liquid Waste Disposal and Treatment Regulations Amendments | Environmental Improvement Board | 11/21/2011 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 9/1/13 |
| Liquid Waste Disposal Regulations | Environmental Improvement Board | 9/15/14 |
