117
CriticalControlPoints
Using the hazard analysis summaries and risk characterization of the
facility,WaterManagement Teamsmust thendecidewhat hazard control, if
any,must beapplied to theirbuildingwater 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 buildingwater systems
are cooling tower(s), water heaters and supplemental chlorination injection
points.Theword“point” inCCP refers to the locationandprocessing step in
thebuildingwater systematwhichhazardcontrol is applied.
Table 5. Risk characterizationmatrixof areas in ahealthcare 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; SolidOrgan
Transplant; Hematology;Med.
Oncology
Hematology andMedical
Oncology (peds or adult);
Transplantation;
Chemotherapy; AIDS
Higher risk area
Patientswithmultiple
severe co-morbidity
diseases reside or
procedures areaswith
water usage and
exposure
Non-transplant ICUs;
OperatingRooms (ORs)
Endoscopy; bronchoscopy;
outpatient surgery
Medium risk area General
medical/surgery
patientswith no or few
co-morbiditydisease
reside. General patient
areas, surgical areas,
public areas
GeneralMedicine andSurgery General patient areas;
Surgical areas; Public areas
Low risk area
Non-patient areas
Waiting rooms, etc
Secretarial and
administrative areas
Table5
