Division of Environmental Health Drinking Water Program

TC/EC Sample and Distribution Chlorine Submission Guide

Web Entry

This page outlines how to report Routine, Repeat, and Special Total Coliform (TC) and E.coli (EC) samples collected from distribution system for RTCR (Revised Total Coliform Rule), Triggered source water samples collected at well for GWR (Ground Water Rule), and distribution chlorine field results (if reported).

The guidance is separated into three sections to match the sections in CMDP. This includes general Sample Information, Microbial Results, and Field Results and Measurements (for reporting distribution chlorine). Additionally, this document includes a link to the Methods Chart and examples of completed sample submissions.

This guidance page notes the state/federally required fields within each section. Submit the information as described on this page to help ensure a successful sample submission. Do not rely on the symbols noted on the CMDP data entry screen, as they do not include the state required fields.

If you have questions, please contact our CMDP support staff at dec.cmdpsupport@alaska.gov.

Section 1: Sample Information

• Water System ID*: Public Water System identification number (PWSID).
• Water System Name*: This field will auto-populate when the appropriate PWSID (first field on the left) is entered.
  • NOTE: Each water system name has a unique PWSID number. If the name and number on the work order does not match what is listed in CMDP, investigate to ensure accuracy and consistency.
• Facility*: Select the appropriate water system facility from where the sample was collected.
• Sampling Point*: Select the appropriate sample point related to the facility where the sample was collected.
  • If you are unsure of the Facility ID or Sample Point ID to enter, review the How to Find PWS Facility ID/Sample Point ID information page.
• Sampling Location*: This field must describe the location where the sample was taken from in the distribution system (i.e., 123 Main Street, Health Clinic, Kitchen sink, etc.). Keep description succinct (numbers, letters, dash/underscore only).
• Sample ID*: Lab sample identification number, limit to 20 characters (numbers, letters, dash/underscore are allowed).
• Collection Date*: Date sample collected (MM/DD/YY).
• Collection Time*: Time sample collected (HH:MM).
• Sample Received Date*: Date sample was received by lab (MM/DD/YY).
• Laboratory ID-Name*: This field will auto-populate with the appropriate lab submitting data through CMDP.
• Sample Type*: This field will auto-populate with the Routine sample type. From the drop down menu, select the appropriate sample type (i.e., routine, repeat, special, triggered, etc.).
  • Note: If you are submitting a repeat or triggered sample, select Repeat or Triggered from the Sample Type drop down menu as appropriate.
  • If you are submitting a sample that is Not For Compliance, select Special from the Sample Type drop down menu.
• Repeat Location: Not required, but report if information is available.
• Related Original Sample Collected**: Relate the original sample collected to the repeat or triggered sample result being submitted.
• Sample Volume (ML)*: Volume of sample analyzed (numerical value only)
• Sample Collector Name: Name of sample collector, report if information is provided.
• Comment: Not required; however, if comments are provided, please limit characters to numbers, letters, dash, or underscore. In particular, do NOT include quotation marks.

Section 2: Microbial Results

• Analyte*: From the drop down menu, select 3100 Coliform (TCR) or 3014 E.coli, as appropriate.
  • Reminder: EC speciation is required for TC Present samples. For TC Absent samples, it is not required.
• A/P*: From the drop down menu, select whether the contaminant was Present or Absent in the analyzed sample.
• Count**: Count of TC+ or EC+ sample. Enter the count only if required by analysis method.
• Units**: From the drop down menu, select the unit of measure for the sample result as appropriate.
• Volume (ML)**: Volume of sample. Enter the appropriate volume of the TC+/EC+ sample only if required by the analysis method.
• Interference: Not required but report if applicable.
• Volume Assayed (ML)*: Volume of sample analyzed (numerical value only).
• Method*: This drop-down menu includes ALL microbial analyses methods and is NOT filtered by the analytes your lab (or subcontracting lab) is certified for. Be sure to verify certification status and select the appropriate method. If the method is reported incorrectly, it will be rejected from the state database. If you are unsure which method should be reported, please see the Methods Chart to determine correct reporting.
• Analysis Start Date*: Date when lab began analysis (MM/DD/YY).
• Analysis Start Time*: Time when lab began analysis (HH:MM).
• Analysis Completed Date: Not required but report if information is available (MM/DD/YY).
• Analysis Completed Time: Not required but report if information is available (HH:MM).
• Analyzing Lab ID**: If the sample was subcontracted to a different lab for analysis, the analyzing lab identification number is required to be reported here.
• Person Performing Analysis: Not required.
• Source Type: Not required but report if information is available.
• Comment: Not required, however if comments are provided, please limit characters to numbers, letters, dash or underscore. In particular, do NOT include quotation marks.

Section 3: Field Results and Measurements (Distribution Chlorine)

For systems that are reporting a distribution chlorine residual along with their routine Total Coliform sample, please report the information in this section.

• Parameter*: From the drop down menu (pictured below), select the appropriate parameter analyzed, either FreeChlorineResidual or TotalChlorineResidual depending on what is noted on the COC. If the type is not noted on the COC, use the FreeChlorineResidual.
  • Note: Do NOT report this distribution chlorine residual as 0999-Chlorine in this field.
• Result*: Enter the numerical value of the field result/measurement.
• Result UOM*: From the drop down menu (pictured below), select the appropriate unit of measurement for the parameter.
• Method: Do NOT report data in this field.
• Comment: Not required, however if comments are provided, please limit characters to numbers, letters, dash or underscore. In particular, do NOT include quotation marks.

Section 4: Examples