Introduction to Private Waters Missouri Department of Health and Senior Services

Program Authority 19 CSR “Environmental Health Standard for the Control of Communicable disease” 19 CSR “Sanitation and Safety Standards for Lodging Establishments” 19 CSR “Missouri Food Code” 19 CSR “Good Manufacturing Practices” 30 CSR 60, 61, and 62: Child care licensing rules

Introduction Types of Water Supplies Well Construction Water Samples Disinfection Regulated Facilities

Objective/Goals Recognize the different supply types and well types Become familiar with the different tests available through the State Public Health Laboratory Interpret results Make recommendations based on test results

Supply Types Public vs. Private

Types of Drinking Water Systems

Private Used By General Public Do not fit DNR Non-Community criteria Used by general public Regulated by DHSS or LPHA

Well Construction

Well Construction Types Drilled Driven Spring Bored Dug

Below Surface Construction Casing Screening Pump

Surface Construction Cross- section view of well at surface

Well Certification All private wells drilled after Oct Proof of certification must be provided to us for wells regulated by DHSS drilled after Oct Well drillers are regulated by DNR.

What tests can we run? Chemical Bacteriological

Bacteriological Water Testing What When Where How

When do we take a water sample? Request Result of a disease investigation Routine inspection

What Happens When The Results are Unsatisfactory?

Disinfection Chlorination Chlorination or Chlorination J6FxK6cwk

Methods of Chlorination Shock chlorination Continuous Feed Chlorination

Chlorination Use method recognized by DNR for Public Minimum 0.5 ppm free chlorine added Minimum 0.2 ppm chlorine in system 30 minute retention time based on pump capacity Positive feed (not drop feed or erosion)

What we do Check surface construction and setback distances Troubleshoot systems Collect water samples (bacterial and chemical) Distribute sample collection bottles Make recommendations based on EPA, DHSS, and DNR regulations and policies

Questions?