Injection Well
- For disposal of the defect brine, off-spec. water and seawater feed bypas
- Located in the west end of the existing wastewater reclamation plant
- 115'depth fiberglass reinforced plastic (FRP) casing and screen at approximateley 65' - 105'
- 16" Diameter casing
(per http://www.mcwd.org/analysis.htm):
Marina Coast Water District Water Quality Report
Coliform analysis |
General physical parameters |
Annual Water Quality Report
The Marina Coast Water District Laboratory performs extensive water
quality monitoring in order to ensure Marina's safe drinking water supply.
Title 22, Division 4, Chapter 15 of the California Code of Regulations
stipulates that we monitor coliform bacteria on a weekly basis. One water
sample from each of five Marina residences is collected and analyzed each
Monday. A different set of five is analyzed each week in a month, so there
are a total of 20 different individual residences from which water is
collected for coliform analysis. Coliform bacteria is strictly monitored because
it acts as an indicator of contamination and it can cause intestinal illnesses.
One coliform sample is analyzed weekly from the desalination plant as
well. In addition, desalinated water is monitored for pH, turbidity,
conductivity, and total dissolved solids daily. Cholride, sulfate, and
selenium are analyzed on a weekly basis.
The regulations also require that we test for total trihalomethanes
(TTHMs) in the distribution system ( we test 4 individual residences) quarterly.
Our 4 wells and 2 reservoirs are tested annually for volatile organic compounds
(VOCs), general minerals, and inorganic chemicals. Desalinated water is tested
for these constituents quarterly because it is a new water source. If problem
areas are found, they are tested more frequently.
In addition to the above analyses, the MCWD lab performs weekly monitoring
of general physical parameters. Each week we test water from 5 residences, 4 wells,
and both reservoirs for temperature, pH, turbidity, odor, color, conductivity, total
dissolved solids, and sulfide. The wells are also tested for chloride. The purpose
of this monitoring is to detect any abnormal concentrations that might indicate
problems within the system. Weekly monitoring ensures that any problems will be
detected and remedied quickly.
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