Northwest Territories Drinking Water Quality Database
Community Descriptions
For more details about the community's water system, click on the community name. For more information about the treatment system, click on the underlined system class.
| Community | Water Source | Type of Treatment Plant |
| Aklavik | Mackenzie River (Peel Channel) | Class 2 – Flocculator / Tube Clarifier and Package Plant (coagulation, flocculation, inclined tube settling and multi-media filter) with liquid chlorine disinfection and storage. |
| Behchokö | Marian Lake / West Channel | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage. A new WTP is being constructed in Rae. Planning is underway for a new WTP in Edzo. |
| Colville Lake | Colville Lake | None (Design is currently underway). |
| Deline | Great Bear Lake | Small System - Truckfill station with liquid chlorine disinfection (truckfill upgrade or replacement will likely be required within the next five years). |
| Dettah | City of Yellowknife (Yellowknife River) | None (treated water comes from City of Yellowknife via trucked delivery). |
| Enterprise | Town of Hay River (Great Slave Lake) | None (treated water comes from Town of Hay River via trucked delivery). |
| Fort Good Hope | Mackenzie River | Small System - Seasonal fill earthen reservoir and truckfill station with liquid chlorine disinfection (truckfill station upgrade project currently underway). |
| Fort Liard | Groundwater under influence of surface water | Class 1 - Two pressure greensand filters with potassium permanganate feed, liquid chlorine disinfection and storage. |
| Fort McPherson | Deep Water Lake | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and multi-media filter) with liquid chlorine disinfection and storage. |
| Fort Providence | Mackenzie River | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage. |
| Fort Resolution | Great Slave Lake (Resolution Bay) | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage. |
| Fort Simpson | Mackenzie River | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage. |
| Fort Smith | Slave River | Class 2 – Primary Settling Reservoir (summer only), Clarifiers (coagulation, flocculation and sedimentation combined), and rapid sand filtration. |
| Gamètì | Rae Lake | Small System - Truckfill station with liquid chlorine disinfection and backup generator |
| Hay River | Great Slave Lake | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage |
| Inuvik | Mackenzie River & 3 Mile Lake (winter) / Hidden Lake (summer) | Class 2 – Sand filters (winter only), tempering, gaseous chlorine disinfection, liquid fluoridation and storage. |
| Jean Marie River | Jean Marie River | Small System – Seasonal fill earthen reservoir and truckfill station with liquid chlorine disinfection. |
| Kakisa | Town of Hay River (Great Slave Lake) |
None (treated water comes from Town of Hay River via truck delivery). |
| K'atlodeeche First Nation | Town of Hay River (Great Slave Lake) | Truckfill station with underground reservoir and chlorine addition (treated water comes from Town of Hay River via supply line under the Hay River). |
| Lutselk’e | Great Slave Lake (Christie Bay) | Small System – Truckfill station with twin intakes with liquid chlorine disinfection, and backup generator. |
| Nahanni Butte | Groundwater | Class 1 - Two pressure greensand filters with potassium permanganate feed, liquid chlorine disinfection and storage. |
| Norman Wells | Mackenzie River | Class 2 – Package Plant (coagulation, flocculation, inclined tube settling and two multi-media filters) with liquid chlorine disinfection and storage. |
| Paulatuk | New Water Lake | Small System – Truckfill station with liquid chlorine disinfection, and backup generator. |
| Sachs Harbour | DOT (or MOT) Lake | Small System – Truckfill station with cartridge filtration, liquid chlorine disinfection and backup generator. |
| Trout Lake | Trout Lake | Small System – Seasonal fill earthen reservoir and truckfill station with liquid chlorine disinfection. |
| Tsiigehtchic | Tso Lake | Small System – Nanofiltration with storage and liquid chlorine disinfection |
| Tuktoyaktuk | Kudlak Lake | Small System – Seasonal fill earthen reservoir, pump service building and truckfill station with liquid chlorine disinfection. |
| Tulita | Great Bear River | Small System – Microfiltration with storage and liquid chlorine disinfection. |
| Ulukhaktok | RCAF Lake | Small System – Truckfill station with twin intakes, liquid chlorine disinfection and backup generator. |
| Wekweètì | Snare Lake | Small System – Truckfill station with liquid chlorine disinfection and backup generator. |
| Whatì | Groundwater | Class 1 – Two pressure greensand filters with potassium permanganate feed, two softeners and liquid chlorine disinfection. |
| Wrigley | Groundwater under influence of surface water | Small System - Liquid chlorine disinfection and storage. |
| Yellowknife | Yellowknife River | Class 1 – tempering, gaseous chlorine disinfection and liquid fluoridation. |

