program is designed to provide analysis of the major elements of concern,
primarily bacteriological monitoring and limited water chemistry.
are a broad class of bacteria found in our environment, including the feces of
man. The presence of coliform bacteria in drinking water may indicate a
possible presence of harmful, disease-causing organisms.
is the most prevalent member of the fecal coliform group. The occurrence of E.
coli in water is considered a specific indicator of fecal contamination and the
presence of enteric pathogens.
Heterotrophic Plate Count
HPC formerly known as the standard plate count is a procedure for estimating
the number of live Heterotrophic bacteria in water. It is used to measure the
changes in water treatment and distribution or in swimming pools.
Nitrate and Nitrite
levels in drinking water can be an indicator of overall water quality. Elevated
nitrate levels may suggest the possible presence of other contaminants such as
disease-causing organisms, pesticides, or other inorganic and organic compounds
that could cause health problems.
is a naturally occurring element found in water. It may be added in controlled
amounts to drinking water. A level of 1.0 mg/L in drinking water is sufficient
to reduce dental caries without harmful effects on health. At excessively high
levels fluorosis may occur.
Waste water tests are designed to provide
services primarily for waste water treatment plants and industrial users who
need to monitor waste streams.
Total Suspended Solids
TSS are the amount of filterable solids in a water sample. Samples are filtered through a glass fiber filter.
The filters are dried and weighed to determine the amount of total suspended solids in mg/l of sample.
Total Dissolved Solids
dissolved solids (TDS) is that portion of solids in water that can pass through
a 2 micron filter. The more minerals dissolved into the water the higher the
total dissolved solids. Waters with high dissolved solids are generally of
Volatile Suspended Solids
solids are those solids lost on ignition (heating to 550 degrees C.) They are
useful to the treatment plant operator because they give a rough approximation
of the amount of organic matter present in the solid fraction of wastewater,
activated sludge and industrial wastes.
different forms of nitrogen and phosphorus are referred to collectively as
NUTRIENTS. Nitrate (NO3), Nitrite (NO2), and Ammonia (NH4) are considered inorganic forms of nitrogen
and are analyzed separately in wastewaters to determine the total inorganic
Biochemical Oxygen Demand
BOD test is used to determine the relative oxygen requirements of wastewaters,
effluents, and polluted waters. The test measures the oxygen utilized during a
specified incubation period for the biochemical degredation of organic
material. It is also used to determine treatment plant efficiency.