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Critical Control Points
Using the hazard analysis summaries and risk characterization of the
facility, Water Management Teams must then decide what hazard control, if
any, must be applied to their building water system.
If the Water Management Team decides that hazard control must be
applied to ensure safety, then it is therefore critical control. The location in
the building water system at which hazard control is applied is called the
Critical Control Point (CCP). Examples of CCPs in building water systems
are cooling tower(s), water heaters and supplemental chlorination injection
points. The word “point” in CCP refers to the location and processing step in
the building water system at which hazard control is applied.
Table 5. Risk characterization matrix of areas in a healthcare facility
Risk
classification
Rationale for risk
characterization
Hospital Inpatient Areas
Outpatient Areas
Highest risk area Immuno-suppressed
hosts reside or cared
for in these areas
BMT unit; Solid Organ
Transplant; Hematology; Med.
Oncology
Hematology and Medical
Oncology (peds or adult);
Transplantation;
Chemotherapy; AIDS
Higher risk area
Patients with multiple
severe co-morbidity
diseases reside or
procedures areas with
water usage and
exposure
Non-transplant ICUs;
Operating Rooms (ORs)
Endoscopy; bronchoscopy;
outpatient surgery
Medium risk area General
medical/surgery
patients with no or few
co-morbidity disease
reside. General patient
areas, surgical areas,
public areas
General Medicine and Surgery General patient areas;
Surgical areas; Public areas
Low risk area
Non-patient areas
Waiting rooms, etc
Secretarial and
administrative areas
Table 5
