Drinking Water Protection: Plan Review for Noncommunity Systems - EH: Minnesota Department of Health

Plan Review for Noncommunity Systems

When is a plan review required for noncommunity systems?

Prior to installation or alteration of any public water supply treatment system including:
    • All water treatment installations used to remove or reduce regulated contaminants listed in the Safe Drinking Water Act
    • Replacement of existing treatment equipment
    • Changes or modifications to the plumbing of an existing treatment facility
    • Any chemical feed equipment

    When is plan review NOT required for noncommunity systems?

      • Installation of noncommunity water supply wells.  Work must still be performed by a licensed well driller, who shall submit a well notification to the MDH, Section of Well Management.
      • Installation of point-of-use devices that are used for aesthetic purposes only.
      • Water softeners used only for hardness, iron or manganese removal.  (Note:  Installation of water softening equipment will subject the system to additional lead and copper monitoring per the Lead and Copper Rule Revisions of 2006.)

    What do I need to include in the plans and specifications?

    • Treatment objective (iron, manganese, arsenic, nitrate removal, etc.)

    • Number of people being served by the water system, and describe the type of population to be served (employees, church congregation, child daycare, etc.)
    • Design criteria:

      • Flow rate
      • Water system demand (including domestic water use, and industrial/process water use).
      • Contaminant concentrations
      • A list of water quality parameters that may interfere with treatment, and at what levels that they become a concern.
      • Expected volume of water to be treated per cycle (or number of bed volumes before bed exhaustion).
      • List of chemicals used for treatment, including feed rates (all chemicals must be ANSI/NSF standard 60 listed)
      • Spill/leak containment provisions for chemical storage tanks
    • Treatment specifications:

      • Type of filter or softener media
      • Number of Vessels and orientation (series or parallel)
      • Chemical feed equipment, including feed rates (include equipment sizing)
      • Makes and models of all equipment
      • ANSI/NSF standard 61 compliance
    • Detailed floor plans showing the locations of the:

      • Treatment equipment
      • All piping, and pipe sizes
      • Valves
      • Water meters
      • Cross connection control devices
      • Existing components of the system
      • Water sampling taps
      • Chemical injection points
      • Wastewater discharge receptacles
      • Materials, methods and sizing for all plumbing piping, including compliance with applicable standards (Minnesota Plumbing Code, Minn. Rules Chapter 4715).
    • Additional Information

      • Operational parameters (controls, cycles)
      • A process schematic drawing of the treatment process
      • Planned maintenance and monitoring activities
      • Chemicals used for maintenance, including feed rates
      • Provision of necessary safety and personal protection devices
      • Plans should include a guarantee of performance for water treatment systems installed for water quality compliance issues.
      • Isometric drawings of the hot & cold water piping, and for the drain, waste and vent piping.
      • Copies of approvals from the administrative authority for the disposal/treatment of the waste generated during the treatment process (i.e. filter backwash, softener regeneration water, etc.)

    Where do I submit plans and specifications?

    When submitting plans and specifications via U.S. Mail, send to:

    Minnesota Department of Health
    Drinking Water Protection Unit – Noncommunity Plan Review
    P.O. Box 64975
    St. Paul, MN 55164-0975

    When submitting plans and specifications via courier service, send to:

    Minnesota Department of Health
    Drinking Water Protection Unit – Noncommunity Plan Review
    625 North Robert Street
    St. Paul, MN 55155

    Drinking Water Protection Contacts

Updated Thursday, November 07, 2013 at 11:28AM