| Government Services Region Codes | Code |
|---|---|
| St. John’s | SJ |
| Eastern (Clarenville) | E |
| Central (Gander) | GAN |
| Western | W |
| Labrador | L |
Locate the Department of Government Services Regional Office in your area
| Standard Reasons for Issuing Boil Water Advisories | |
|---|---|
| Water supply has no disinfection system | A |
| Chlorination system is turned off by the operator, due to taste or other aesthetic considerations. | B1 |
| Chlorination system is turned off by operator, due to perceived health risks. | B2 |
| Chlorination system is turned off by operator, due to lack of funds to operate. | B3 |
| Disinfection system is off due to maintenance or mechanical failure. | C1 |
| Disinfection system is off due to lack of chlorine or other disinfectant. | C2 |
| Water distribution system is undergoing maintenance or repairs. | D1 |
| A cross connection is discovered in the distribution system. | D2 |
| Inadequately treated water was introduced into the system due to fireflows, flushing operations, interconnections, minor power outage or other pressure loss. | D3 |
| Water entering the distribution system or facility, after a minimum 20 minute contact time does not have a free chlorine residual of at least 0.3 mg/l or equivalent CT value. | E1 |
| No free chlorine residual detected in the water distribution system. | E2 |
| Insufficient residual disinfectant in water system disinfected by means other than chlorination. | E3 |
| Total coliform detected AND repeat samples can not be taken as required | F2T |
| Escherichia coli (E. coli) detected AND repeat samples can not be taken as required | F2E |
| Total coliforms detected and confirmed in repeat sample. | F3 |
| Escherichia coli (E.coli) detected in an initial sample(s) is considered extensive and the water system has other known problems. | F4 |
| Escherichia coli (E.coli) detected and confirmed in repeat sample. | F5 |
| Viruses detected (eg, Hepatitis A, Norwalk). | F6 |
| Protozoa detected (eg, Giardia, Cryptosporidium). | F7 |
| Water supply system integrity compromised due to disaster (e.g. contamination of water source from flooding, gross contamination, major power failure, etc.). | G |
| Waterborne disease outbreak in the community. | H |