Total Coliform: Texas Forms

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Total ColiformTexas Forms

• Sample Types
• Individual
• Private Business
• Public bottled water
• Public Construction
• Public Distribution
• Public Raw
• Public Repeat
• Public Replacement
• Public Special

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Individual Person
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Private Business
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Public Bottled water
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Public Construction

• These are samples submitted during
  construction projects of water system facilities
  whether treatment facilities, storage tanks or
  piping. These samples are required to be
  submitted after construction is completed and
  facilities have been disinfected. These samples
  will determine the effectiveness of the
  disinfection process. Coliform positive
  construction samples would indicate the need to
  disinfect again. Doing repairs may also be cause
  for submission of construction samples under
  certain conditions such as loss of pressure or
  low pressure.

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Public Construction
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Routine/distribution

• These are samples which are submitted to
  comply with the TCEQ requirements to sample the
  distribution system at active service connections
  each month. The number of samples submitted is
  based on the population served by the public
  water system. The minimum number of samples
  required must be submitted monthly.

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Public Distribution
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Public Raw

• These samples are collected directly from a
  water source, most often a well, before
  chlorination or any other treatment. These
  samples are used to determine conditions within
  the well. The presence of coliform bacteria,
  especially E. coli, would indicate a serious
  problem with well construction or the well
  location. Raw samples are required for public
  water systems without well easements,
  construction/location problems or violations of
  the coliform maximum contaminant level in
  distribution monitoring.

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Public Raw
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Public Repeat

• These samples are submitted in response to a
  routine/distribution sample which is coliform
  positive. These samples are collected at the
  site of the original coliform positive sample and
  within five connections upstream and within five
  connections downstream of the original coliform
  positive site. These samples must be collected
  and submitted within 24hr of the public water
  system leaning of a positive routine/distribution
  sample. A public water system which submits only
  one routine/distribution sample each month must
  submit four repeat samples. The fourth repeat
  sample would come from any site not yet having a
  repeat sample collected from it. Those public
  water systems which submit more than one routine
  sample each month must collect 3 repeat samples
  for each positive routine/distribution sample.

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Public Repeat
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Public Replacement

• When a sample is indicted by the lab as being
  unsuitable for analysis the sample must be
  collected again at the same site as the original
  sample or the system will not receive credit for
  submitting a sample. These are replacement
  samples. The water system may be charged with a
  violation if unsuitable samples are not
  replaced. Mark the lab form sample type the
  same as the original sample sample type was
  marked.

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Public Replacement
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Public Special

• These samples are submitted in response to
  customer complaints or other circumstances where
  the public water system is seeking information
  regarding water system conditions. These samples
  are not intended to be compliance samples such
  as routine/distribution samples.

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Public Special