| Date of Study | 1971 | 1976 | 1981 | 1987 | 1989 | 1991 | 1993 | 2003 | ||
| Study Title | Old Saybrook Refuse Disposal Commission | Valley Shores Regional Wastewater Report | Draft Sewer Avoidance Report | Final Sewer Avoidance Report | Joint Wastewater Management Study | Waste Water and Septic Suitability Report | Final Report on Off-site Solutions for Collection and Treatment of Wastewater | Mixed Onsite and Offsite Wastewater Disposal Alternative | ||
| Study Area \ Author | (unknown) | Malcolm-Pirnie | Malcolm-Pirnie | Malcolm-Pirnie | Hayden-Wegman | Nexus | Weston & Sampson | Fuss & O'Neill | ||
| Chalker Beach | sewer | sewer | Sewer (comm) 1 | Sewer (comm) | sewer | sewer | sewer | sewer (comm) | ||
| Indiantown | sewer | sewer | Sewer (comm) | Sewer (comm) | sewer | sewer | sewer | sewer (comm) | ||
| Saybrook Manor | sewer | sewer | Sewer (comm) | Sewer (comm) | sewer | sewer | sewer | sewer (comm) | ||
| Knollwood | sewer | sewer | onsite | onsite | -- | -- | -- | -- | ||
| Fenwood | sewer | sewer | onsite / comm | onsite / comm | onsite | onsite | onsite / comm | onsite | ||
| Cornfield Point | sewer | sewer | onsite / comm | onsite / comm | onsite | sewer | onsite / comm | Aggr Onsite | ||
| Cornfield Park | -- | sewer | Sewer (comm) | Sewer (comm) | onsite | sewer | sewer | Aggr Onsite | ||
| Main Street (Town Center) | sewer | sewer | onsite | onsite | sewer * | sewer * | sewer * | onsite | ||
| Oyster River East / Saybrook Acres | -- | sewer | onsite | onsite | onsite | onsite | onsite / comm | onsite | ||
| Route 1 west (Thompson-Denmore) | -- | sewer | onsite | onsite | sewer * | sewer * | sewer * | onsite | ||
| Route 1 (Ingham Hill- Saybrook Acres) | -- | sewer | onsite | onsite | sewer * | sewer * | sewer * | onsite | ||
| Route 1 Town Center (Main St) | -- | sewer | onsite | onsite | sewer * | sewer * | sewer * | |||
| Saybrook Point | -- | sewer | onsite / comm | onsite / comm | onsite | onsite | onsite / comm | onsite | ||
| Maple Ave | -- | sewer | onsite / comm | onsite | sewer | sewer | sewer | Aggr Onsite | ||
| Plum Bank | -- | sewer | onsite | onsite | -- | -- | -- | Aggr Onsite | ||
| Great Hammock | -- | sewer | onsite | onsite | -- | -- | -- | Aggr Onsite | ||
| Meadowood | -- | -- | Sewer (comm) | onsite / comm | onsite | onsite | sewer | onsite | ||
| North Cove | -- | -- | onsite | onsite | -- | -- | -- | -- | ||
| Fenwick | -- | -- | -- | -- | -- | -- | -- | -- | ||
| -- unknown / not referenced | onsite= long-term onsite management (no town cap. Expenditures) | Sewer (comm) = (Designation I) sewer lines to a small community system with subsurface discharge | Onsite/comm = (Designation II) onsite, intensive monitoring to determine if offsite disposal needed | sewer = sewer lines to a conventional WPCF with surface water discharge | sewer * = main roads transited by sewer serving other area, side roads not served | Aggr. Onsite = Town actively involved in onsite upgrades | ||||
| 1: A portion of Chalker Beach was considered designation III (onsite) | ||||||||||