NOTICE TO WATER SYSTEM USERS COLIFORM MAXIMUM CONTAMINATE LEVEL (MCL) EXCEEDED – NON-ACUTE MCL AND TEMPORARY WATER SYSTEM CHLORINATION
Beginning Wednesday August 22, 2018 we will be feeding a small amount of chlorine which will possibly become apparent at the customer taps. This is being doneas part of the investigation of a routine bacteriological sample testing positive for Total Coliform (negative for possible disease causing e-coli and fecal coliform)
AFFECTED AREA: The South Bay service area lying east of the Ludlow Creek and the North Bay service area east of Oak Bay Road. Additional to this are customers on Osprey Ridge downhill of Wren Ct. including the commercial development containing Snug Harbor Café, Dental Office, Sound Bank and Coldwell Banker. The area is served by Wells 14 and 16 and Reservoirs C and D
THE REASON: OLYMPIC WATER & SEWER, INC. Water System, I.D. 68700L, located in Jefferson County submitted drinking water samples to a certified laboratory in August of 2018 for total coliform analysis. The sample was collected on August 7, 2018.
The test results indicated that there was Total Coliform bacteria present in the sample but no fecal or E. Coli.
The samples were taken from a routine sample station at 142 Crestview Drive. Because of the configuration of the water pipes, we are confident that the only properties potentially affected are in the South Bay Service area and (south and east) of Oak Bay Road with the exception of the Loomis Properties Commercial area.
PRECAUTIONS: Since only Total Coliform has been detected, there is no immediate health risk to our customers. If an immediate health risk had existed, you would have been notified right away. However, as a precaution the Washington State Department of Health has recommend that if you are currently taking chemotherapy, undergoing kidney dialysis, or have an immune deficiency you may want boil water. Total Coliforms are common in the environment and are generally not harmful themselves, however any indication of contamination is thoroughly investigated.
INVESTIGATION: The following investigation and follow up actions are being taken in consultation with Washington State Department of Health:
Wells 14 and 16 tested negative for total coliform confirming that the wells are not the source of the coliform. Teal Lake reservoir tested positive for total coliform as did distribution system samples. Follow up sampling confirmed there is still coliform in the water that must be eliminated.
Total Coliform Notification
August 21, 2018
Summary of Samples and Lab Analysis: (all negative for e-coli)
- Initial sample on Crestview Drive.: Positive for Total Coliform
- Follow up on samples on Crestview Drive.: Positive for Total Coliform
- Wells 14 and 16: Negative for all coliform
- Sample at Reservoir D (Teal Lake Rd.): Positive for Total Coliform
While we continue our investigation we have decided that the most efficient way to cure the problem is through a light chlorination. We will continue this for up to two weeks, or until all of our follow up samples show that the problem has been corrected.
While we strive to deliver the highest quality water possible to our customers, unfortunately situations such as this do occur periodically in a non-chlorinated system. Thank you for your understanding and patience. Please do not hesitate to call us with questions.
Below is further information from the U.S. Environmental Protection Agency regarding Total Coliform.
The following is mandatory language required by the Environmental Protection Agency in these situations. .
The United States Environmental Protection Agency (EPA) sets water standards and has determined that the presence of total coliforms is a possible health concern. Total coliforms are common in the environment and are generally not harmful themselves. The presence of these bacteria in drinking water, however, generally is a result of a problem with water treatment or the pipes which distribute the water, and indicates that the water may be contaminated with organisms that can cause disease. Disease symptoms may include diarrhea, cramps, nausea, and possibly jaundice, and any associated headaches and fatigue. These symptoms, however, are not just associated with the disease causing organisms in drinking water, but may also be caused by a number of other factors other than your drinking water. EPA has set an enforceable drinking water standard for total coliforms to reduce the risk of these adverse health effects. Drinking water which meets this standard is usually not associated with a health risk from disease-causing bacteria and should be considered safe.