Departments > Coos Health & Wellness > Public Health > Environmental Health > Public Water Systems

Coos County Public Water System

The State OHA Drinking Water Program contacts with CHW to assist local public water systems operators maintain safe potable water. CHW works with systems solely using ground water and serving a population of no more than 3300 and one of the following definitions for a public water system.

  • Community Water System: A water system which supplies drinking water to 25 or more of the same people year-round in their residence. Examples are cities, towns, subdivisions, mobile home parks, etc.
  • Non-transient Non-community Water System: A water system which supplies water to 25 or more of
  •  the same people at least six months per year in places other than their residence. Examples include 
    schools, hospitals, and work places.
  • Transient Non-community Water System: A water system which provides water in a place such as a restaurant or campground where do not remain for long periods of time including at least  25 people a day or at least 60 days a year.

State Regulated Water System: Water systems which provide water to small residential communities between 4 and 14 connections, or serving from 20 to 24 persons a day at least 60 days of the year.

A water system does not meet the definition of "public" is not subject to Oregon's Drinking Water Program rules. For addition information about safety non-regulated sources of water check this Private Water System.

Each type of public water system is subject to monitoring for certain contaminates. A public water system's sample results for regulated contaminants are considered public record. If you know the water of a water system you can see sample results by following these instructions:
Drinking Fountain

Resources for the Public Water System Operator
Most public water systems are surveyed by an inspector every three to five years. A water system operator familiar with the following two documents can aid in the efficiency of the survey.
  • Ready for the Water System Survey?  PDF
  • Ready for Survey of the Treatment Plant?  PDF
Coli form Sampling Plan(s) Please Note: Effective April 2016, the sampling requirements will change and the following models may no longer be valid. Go to and search Drinking Water Services for current sampling requirements.
  • If your water system is too big to use a model coli form sampling plan above as an example, review this template (template is available in MS Word and PDF format) to find instructions to create a plan that meets the minimum sampling plan requirements. If you do not know which of the above three options applies to your public water system, contact the Environmental Health Office of the CHW at 541-751-2431
Emergency Response Plan
Each public system is required to have a written Emergency Response Plan (ERP) that is based on a vulnerability assessment for the system. Instructions are provided here on conducting a vulnerability assessment as well as a model for creating an Emergency Response Plan.


Other Information that could be part of an EMERGENCY RESPONSE PLAN            

BROKEN WATER LINE response  PDF            

Respond to LOSS OF WATER PRESSURE in THE SYSTEM  PDF            


Operations and Maintenance Manual

Each public water system is required to have a written Operations and Maintenance (O & M) Manual. A good O & M manual is organized according to a schedule of what needs to happen to keep the system operating in a safe way and in accordance with state law.
The schedule should consider such things as sampling requirements and maintenance needs for all the physical and mechanical components of the water system.
What needs to happen on a daily basis?
What needs to happen on a monthly basis?
What needs to happen on a yearly basis, and so forth?
For more information, see:
(Click on the PDF icon for the corresponding manual)

 Creating a water system operations manual  Creating a useful water system manual

O & M for Water Systems Out of Operation for Part of Year

  1. Go to: Drinking Water Data Online (A new window will pop up)
  2. In the window type in the name of the public water system you are interested in and hit the SUBMIT QUERY icon.
  3. You will see a table listing public water system numbers (PWS ID #) with similarly named public water systems. Hit the PWS ID # for the system of your choice.
  4. You should now see general information about administration of the system. (If this is not the water system you had an interest in, either return to the list of systems in #3 and make another PWS ID # selection or confirm the name of the system with someone who knows and return to #1.
  5. While on the Webpage about general information about administration of the water system,scroll to the lower portion of the page where you will see numerous links which provide data specifically the public water system (i.e Coli form Results, Latest Chemical Results, Single Analyst Results, Nitrates, Arsenic, etc). You can hit any of the links where results will be posted if the system samples for the contaminant.


Have you heard about the Governor’s initiative to test for lead in School’s drinking water?

In April 2016, Oregon Governor, Kate Brown, called for lead testing in drinking water at schools. The Oregon Department of Education (ODE) and Oregon Health Authority (OHA) have lead roles in the governor’s directive. Each school district will decide how to take the directive and how to share any findings. You can read ODE's "Tips to Keep Children Safe from Lead in Drinking Water" and the OHA's “Statewide plan for reducing student exposure to lead in drinking water” For lead testing results at a specific school contact the school district.

The only way to know for sure if your child has been exposed to lead is to have their blood tested.  This test is arranged by your family doctor.  Blood tests are used to find out how much lead is in a child's blood. The test is simple. Your health care provider takes blood from your child and a lab will test the blood. Click here for more information.

There are many potential ways to be exposed to lead.  There is not a “Good Amount” of lead exposure.  See some potential effects of exposure to lead.  

OHA Lead Resources: Protect your family from Lead.



Contact Us

Environmental Health

Program Manager:

Rick Hallmark, EHS, MPA

Phone: 541-266-6744 or 541-266-6720


Office Hours
Monday - Friday
8 am  to 5 pm


Do you know you can read reports for your favorite restaurant, motel, pools and RV parks? Click on the link below.

To review inspection reports for a licensed facility in Coos County, just enter the name in the search box to see all inspections conducted since starting with the HealthSpace software.  All inspections have a 14-day delay before they are posted online.  Please check back if an inspection isn’t available to view yet.