Frost Free Water Hydrants

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Frost Free Water Hydrants

• Potential Farmstead Impact

Lyndon Kelley, District Water Quality Agent, MSU
Extension
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How do Frost Free Hydrants Work

• Frost free hydrants drain the riser pipe between
  underground supply line and the hydrant.

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What Risk do Frost Free Hydrants Pose?
Ground level
Static Water level
Potential backflow of Contaminated water into
riser pipe
Static Water level
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What Risk do Frost Free Hydrants Pose?
Power failure with no backflow protection in place
Ground level
Water level
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What Risk do Frost Free Hydrants Pose?
Hydrant turned off while hose is immersed in
sprayer
Ground level
Potential backflow of Contaminated water into
soil at waste outlet
Water level
Supply line
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Stopcock Backflow preventers Do Not prevent the
problem.
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What Risk do Frost Free Hydrants Pose?
Hydrant turned off while hose is immersed in
sprayer. Backflow protection in place
Ground level
Potential backflow of Contaminated water into
soil at backflow preventers waste outlet
Water level
Supply line
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What Risk do Frost Free Hydrants Pose?Back Flow
of Contaminated Water..
Ground level
Power failure with no backflow protection in
place may allow contamination of water supply or
soil near weep drain.
Water level
Supply line
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What Risk do Frost Free Hydrants Pose (Bacterial
Contamination)
Potential source of contamination Manure,
septic, pesticide or fertilizer
Ground level
Water level
Potential backflow of Contaminated water into
riser pipe
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Frost Free Hydrants allowed by well Code

• Michigan Water Well Construction and Pump
  Installation Code (Part 127, Act 368, PA 1978 and
  Administrative Rules). Protection of ground water
  resources and aquifers is accomplished by
  assuring that water wells are constructed,
  operated, and decommissioned in a technically
  sound manner.

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Frost Free Hydrants allowed by well Code

• YARD HYDRANTS
• Items marked with a plus () have been added to
  the list since the last revision.
• THE FOLLOWING FROST-PROOF YARD HYDRANTS DO NOT
  USE A STOP-AND-WASTE VALVE AND ARE APPROVED FOR
• INSTALLATION ON ANY WATER SUPPLY IN MICHIGAN.
• CAMPBELL - SANITARY YARD HYDRANT (SYH)
• HIDE-DRANT CORPORATION HIDE-DRANT MODEL 99 YARD
  HYDRANT (model number change, see below)
• HIDE 7501-7503
• HIDE 104-108
• HOEPTNER PERFECTED PRODUCTS - FREEZE FLOW
  SANITARY YARD HYDRANT
• MERRILL MFG. CO. - H-3000 SERIES WITH HEATING
  CABLE AND NO DRAIN HOLE
• MURDOCK, INC. - EXPELO - SANITARY POST WATER
  HYDRANT
• SIMMONS MANUFACTURING COMPANY SIMMONS SANITARY
  YARD HYDRANT
• WHITEWATER MFG. CO. - MODEL 256
  FREEZE-PROOF/POLLUTION-PROOF YARD HYDRANT (Out of
  Production)
• WOODFORD MFG. CO. - MODEL S1 FREEZE-PROOF/POLLUTIO
  N-PROOF YARD HYDRANT (Out of Production)
• MODEL S2 SANITARY HYDRANT (Out of Production)
• MODEL S3 SANITARY HYDRANT
• MODEL S4H SANITARY HYDRANT
• YARD HYDRANTS WITH BURIED STOP-AND-WASTE VALVES
  ARE PROHIBITED ON ALL TYPES OF WATER SUPPLIES,
  UNDER SECTION P1501.1.1 OF ARTICLE 15 OF THE
  MICHIGAN PLUMBING CODE, R 325.1674A OF THE RULES
  FOR PART 127, ACT 368, PA 1978, MICHIGAN PUBLIC
  HEALTH CODE, AND RULE 1108(3), ACT 399, PA 1976,
  MICHIGAN SAFE DRINKING WATER ACT.

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Michigan Groundwater Stewardship Cost-share
Practices Minimizing the danger of frost free
hydrants.

• Since its beginning in 1995, the Michigan
  Groundwater Stewardship program has assisted in
  purchasing or implementing more than 6,500
  stewardship practices.

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Offset Hydrant
Use of a frost free offset hydrant to provide
separation between wells and mix / load
operations.
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Offset Hydrant
Off set hydrant allows the filling of sprayer
away from well head, reducing the chance of
spilled or dripped pesticide from reaching
groundwater.
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Mix/Load, Use of Air Gap
Prevent the backflow of pesticides from a sprayer
to a well by maintaining an air gap between the
hose and the sprayer fill port.
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Mix/Load, Use of Air Gap
Practice application prevents back siphoning of
pesticide contaminated waters into the well.
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Nurse Tank(no longer cost shared)
This piece of equipment is used to transport
clean water to the field for pesticide mixing and
application.
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Nurse Tank(no longer cost shared)
The use of a nurse tank reduces the risk of
pesticide spills in near proximity to well.
Mixing and load at different location in field
also minimizes build up of small spill and drip
to level where normal chemical breakdown can
happen.