The Technical Guidance Manual provides guidance on the design, construction, alteration, repair, operation, and maintenance of standard individual and subsurface sewage systems, their components, and alternatives. The manual is updated periodically to adapt to the dynamic and complex nature of small wastewater disposal systems. Updates are cited below.
- Technical Guidance Manual for Individual and Subsurface Sewage Disposal Systems (Last updated: November 2020)
Note: This is a large file. If you have difficulty downloading it, try opening it in a different browser or from your hard drive instead of your browser. Right-click on the link, select “Save link as,” navigate to the file on your hard drive, and double-click to open.
- Upcoming Meeting
- Previous Meetings
No event found!
- Meeting Documents
- Request the previous meeting records using our Public Records Request form.
Current Updates to the Manual
Year | Description |
---|---|
May | Section 3.2.8.1.2 Medium Sand (p. 3-17) Section 1.4.2.2.1 Provisional ETPS Approval (pp. 1-6 to 1-7) Section 4.8.2 Extended Treatment Package System Approval Conditions (pp. 4-53 to 4-56) Section 4.13 Gray Water System (pp. 4-71 to 4-77) |
August | Section 1.5.1 Installer’s Registration Permit and Service Provider Certification Application, Bond, Fee, Training, and Exam (pp. 1-10 to 1-11) Section 4.19.3.2 Pressurization Unit (pp. 4-95 to 4-96) |
November | Section 1.8 Easement (pp. 1-18 to 1-20) Section 4.3.3 Above-Grade Capping Fill System (p. 4-19) |
Previous Updates to the Manual
Year | Description |
---|---|
December | Section 1.4.2.1.1 Initial Septic Tank Approvals (p. 1-4) Section 3.2.3 Septic Tank and Dosing Chamber Installation (p. 3-6) Section 5.8 Septic Tank Effluent Filters, Table 5-12 (p. 5-23) |
October | Section 4.23.3.2.1 Standard Enveloped In-Trench Filter Design and Construction. Figure 4-39. (p. 4-136) Section 4.23.3.2.2. Pretreated Enveloped In-Trench Sand Filter Design and Construction. Figure 4-40. (p. 4-137) Section 4.23.3.2.3. Pressurized Enveloped In-Trench Sand Filter Design and Construction. Figure 4.41. (p. 4-138) Section 5.2. Approved Septic Tanks. Table 5-1. (p. 5-2) Section 5.11. Drainfield Remediation Components. Table 5-15. (p. 5-27) Section 5.13. Proprietary Wastewater Treatment Products. Table 5-17. (pp.5-29–5-30) |
July | Section 2.2.5. Method of 72 to Determine Effective Soil Depths (pp. 5-17 to 5-19) Section 4.23. In-Trench Sand Filter (pp. 4-133 to 4-138) Section 5.2. Approved Septic Tanks, Table 5-1 (pp. 5-2 to 5-11) Section 5.4. Extended Treatment Package Systems, Table 5-3 (pp. 5-13 to 5-15 Section 5.5. Approved Nondischarging Products, Table 5-5 (p. 5-17) |
March | Section 1.9.5. Property Owner Operation, Maintenance, or Monitoring Requirements (pp. 1-31 and 1-32) Section 4.24.3.1. Sand Mound Absorption Bed Cell Design (p. 4-141) Section 5.2. Approved Septic Tanks, Table 5-1 (pp. 5-2 to 5-10) Section 5.5. Approved Nondischarging Products, Tables 5-5 to 5-8 (pp. 5-17 to 5-19) Section 5.13. Proprietary Wastewater Treatment Products, Table 5-13 (pp. 5-29 and 5-30) |
January | Section 5.14. Updated products list in Table 5-15 (pp. 5-29 to 5-30) |
This accordion will not appear on the screen
Onsite Wastewater Coordinator