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All About Sanitary Surveys

Sustained Compliance: What It Means to Public Water System Owners and Operators September 23-24, 2010. All About Sanitary Surveys. David Edmunds Environmental Program Specialist ADEC Drinking Water Program. What this presentation will cover:. A brief history of the of the Sanitary Survey

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All About Sanitary Surveys

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  1. Sustained Compliance: What It Means to Public Water System Owners and Operators September 23-24, 2010 All About Sanitary Surveys David Edmunds Environmental Program Specialist ADEC Drinking Water Program

  2. What this presentation will cover: • A brief history of the of the Sanitary Survey • Public Water System Definitions • Types of Water Systems • Sanitary Survey Schedule • What is a Sanitary survey? • Who conducts a Sanitary Survey? • What to Expect? • What are they looking for? • What if they find something? • Deficiencies • What is the information used for? • Conclusion • Discussion

  3. History • Sanitary Surveys have been conducted on Public Water Systems in Alaska since 1978. Many of these surveys were conducted by DEC and Federal agencies such as the Indian Health Service. • In 1987, the U.S. EPA proposed the Total Coliform Rule. This rule, as proposed, raised the minimum number of total coliform samples from one to five per month for small PWS. Public health experts estimated that five (5) water samples was the minimum number needed to assure safe water. State agencies and public water suppliers pointed out the high costs and difficulties involved with a fivefold increase in the number of water samples required. After negotiation, EPA agreed to not increase the number of routine samples if a sanitary survey were performed regularly.

  4. What Public Water Systems Need Sanitary Surveys? • Community Water System (C) • 25 residents • 15 service connections • Non Transient Non Community (NTNC) • Not a community water system • Serves same people (non transient population) over 6 months per year • Transient Non Community (TNC) • A non-community water system that does not regularly serve at least 25 of the same persons (transient)

  5. Types of Water Systems • Surface Water Systems & GWUDISW • Filtration Treatment • Conventional • Direct • Diatomaceous Earth • Slow Sand • Alternative • Ground Water Systems • Treatment is usually for secondary contaminants (iron and manganese)

  6. Sanitary Survey Schedule

  7. What Is a Sanitary Survey? • A sanitary survey is defined as "an onsite review of the water source, and the facilities, equipment, operation, and maintenance of a public water system." (18 AAC 80)

  8. Who Conducts a Sanitary Survey? • Approved Sanitary Survey Inspector • Must have gone through an approved Sanitary Survey class • Could be either DEC staff or what we call “third-party”

  9. What To Expect? • Sanitary Survey Inspector introduction • Check records, plans; and review files • Site sampling plan • Past surveys • Plan Approval/modifications • Operator Certification • Walk through the system • Source, treatment, pumps, storage, and distribution

  10. What Are Inspectors Looking For? • Source • Potential sources of contamination • Separation distance • Septic, fuel storage, etc. • Construction of the source • Treatment (if appropriate) • Disinfection • Filtration • Cross connections

  11. What Are They Looking For? (cont’d) • Storage • Overflow screen • Access • Distribution • Checking for Cross-connections • Residual disinfection (if applicable) • Pressure and leaks • Operations • Monitoring locations and equipment • Maintenance • Anything that might impact public health

  12. Sampling Locations

  13. What if They Find Something? • Dependent on impact to public health • Deficiencies • Significant • Minor • Recommendation

  14. Significant Deficiencies • Significant Deficiencies • Once notified by the state of deficiency • PWS must contact the Drinking Water Program to address the significant deficiency or significant deficiencies • PWS to contact DWP within 30 days or less, depending on severity (5 days or 24 hours;) on how to correct the deficiency • Corrective Action Plan • “ a proposal, either by the department or submitted by the owner of a public water system to the department for approval, to take one or more corrective actions according to a specified schedule” • May require the system to be placed on a BWN, depending on the situation

  15. Other Deficiencies • Minor deficiencies • 120 days to have an action plan • Recommendations • Best management practices

  16. Critical Items Inspectors Need • Contact Information • Owner information (Tribal or City) • Operator information (back-up operator as well) • Administrator • Population • Resident • Transient • Non-ransient • Service connections (How many? Residential vs. Commercial) • Treatment (Chlorination, Fluoridation, Coagulation, What is in use at the time of the survey?) • Filtration (Type of filtration, how many, manufacturer, size, etc.) • Operating dates (when the system is in operation as well as commercial service connections) • Verification of sampling points (Turbidity monitoring after filtration, Entry point and chlorine levels) • Approval to operate

  17. What Is the Information Used for? • Correct problems that might have an impact on public health • Update the State Database • Verify that monitoring schedules reflect the current water system and they are correct • Collect information on water systems on a statewide level to help address potential problems and help implement new rules

  18. Conclusion • A brief history of the of the Sanitary Survey • Public Water System Definitions • Types of Water Systems • Sanitary Survey Schedule • What Is a Sanitary Survey? • What to expect? • What are inspectors looking for? • What if they find something? • Deficiencies • What is the information used for?

  19. Helpful Links • What is a Sanitary Survey http://www.dec.state.ak.us/eh/dw/dwmain/what-survey.html • Approved Sanitary Surveyors http://www.dec.state.ak.us/eh/dw/approved_surveyors.html • Public Water System Information; http://www.dec.state.ak.us/eh/dw/dwmain/drinking_water.html • Public Water System Monitoring Summaries http://map.dec.state.ak.us/eh/dww/index.jsp • Sanitary Survey information (Surveys due and overdue, Desktop ESS downloads) http://www.dec.state.ak.us/eh/dw/dwmain/sanitary_surveys.html

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