115
Processing
Step
Potential
Hazards
Significant
Risk?
Basis for Risk
Characterization
HazardControls
Applied or Could
BeApplied
Critical
Control
Point?
1. Receiving
Microbial
–
waterborne
pathogenic bacteria,
fungi, viruses and
protozoa
Chemical
–
Potentially toxic
substances such as
disinfectionby-
products, organics
and toxic inorganic
compounds
Physical -
none
No
Purchasinghigh
quality surface
water from the
municipality treated
toNational Primary
DrinkingWater
Standards in
compliancewith
federal law.
None
NO
2. Storage in
Underground
Tank
Microbial
–
potentially
pathogenic bacteria
associatedwith
biofilms on surfaces
anddeposits in the
tankmay
Chemical
–
none
Physical
- none
Yes
Water is stored for
up to several days
duringwhich
disinfect can
become depleted.
Intrusionof
microorganisms
from deposits in the
tank can occur.
Amplification to
dangerous levels
canoccur.
None currently
applied. Tank could
be regularly
disinfected.
YES
Next Processing
Step correlating
toPFD
The purpose of this systematic hazard analysis summary is to decide
what additional hazard control is necessary, if any, and where to apply it
in the building water system. The team decisions about what and where
hazard control is tobe applied is theoutput of hazard analysis.
Warning:TheHACCP teammustnot“jumpahead”andstartapplyinghazard
controlbeforefirstgoingthroughthishazardanalysissummaryprocess.Manyfacility
managers havebeen “sold”hazard control thatwasn’t evenneeded and applied in
ways that actuallymade theoverall buildingwater systemmorehazardous.This is
unacceptable.Itcanbepreventedbysystematicallyanalyzingthehazardsstep-by-step
andthendecidingwhat, ifany,additionalhazardcontrolisnecessary.
Typically, the team uses a table with 6 columns corresponding to 1-6
above as shown inTable 4.
Table4.ExampleHazardAnalysisSummary foraPotableWaterSystem
Table4
