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Coliform Information Packet

We developed the Coliform Information Packet (DOH 331-258) to help you better understand total coliform bacteria, what it is, how to test for it, and what to do if you find it in your water supply. You can get a hardcopy of this packet from our regional offices (see below) or order one from our publications page.

Contents/Downloads

Publications: (PDF)

Publication #

Coliform Information Packet: Instructions for use by water systems

331-258-1

Preparing a Coliform Monitoring Plan: For large or multiple-source systems

331-036

Preparing a Coliform Monitoring Plan: For systems with one supply source

331-240

Coliform Sampling Procedure

331-225

Routine Coliform Monitoring Requirements

331-205

Correct Completion of a Coliform Sample Lab Slip

331-247

Follow-up to an Unsatisfactory Coliform Sample

331-187

Coliform Bacteria and Drinking Water

331-181

Types of Coliform Violations for Group A Public Water Systems

331-206

Troubleshooting Checklist for Coliform Contamination

331-180

Emergency Disinfection of Small Water Systems

331-242

Office of Drinking Water authority over operators and water systems

331-449

Public notification form:

You must use the Coliform Maximum Contaminant Level Exceeded: Nonacute MCL form to provide public notice to your customers if you have a nonacute MCL violation.

You may revise the form, but you must KEEP all the information in italics. Type or hand write information on the form. Then photocopy the completed notice and distribute to your customers. The Spanish version of the public notification is on the back of the form.

You must complete the bottom section of the form and mail it to us within 30 days of notifying your customers of a nonacute MCL violation. This is certification that you provided notification to your customers.

 

Coliform Maximum Contaminant Level Exceeded: Nonacute MCL

(331-263)

PDF / Word

For more information

You can get a hardcopy of this packet from our regional offices below or order one from our publications page. Click for map of regional offices.

Eastern Region: Spokane Valley 509-329-2100

Northwest Region: Kent 253-395-6750

Southwest Region: Tumwater 360-236-3030

After-hours Emergency: 877-481-4901