| #D001 | | AIDS | acquired immunodeficiency syndrome | high |
| #D002 | | AK | Acanthamoeba keratitis | high |
| #D003 | | ANSI | American National Standards Institute | high |
| #D004 | | ASHRAE | American Society of Heating, Refrigerating, and Air-Conditioning Engineers | high |
| #D005 | | CDC | Centers for Disease Control and Prevention | high |
| #D006 | | CFU | colony forming units | high |
| #D007 | | CT | concentration (C) × time (T) | high |
| #D008 | | DAEC | diffuse adherent Escherichia coli | high |
| #D009 | | DNA | deoxyribonucleic acid | high |
| #D010 | | EAEC | enteroaggregative Escherichia coli | high |
| #D011 | | E. coli | Escherichia coli | high |
| #D012 | | EHEC | enterohaemorrhagic Escherichia coli | high |
| #D013 | | EIEC | enteroinvasive Escherichia coli | high |
| #D014 | | EPEC | enteropathogenic Escherichia coli | high |
| #D015 | | ESBL | extended spectrum β-lactamase | high |
| #D016 | | ETEC | enterotoxigenic Escherichia coli | high |
| #D017 | | EU | European Union | high |
| #D018 | | GAC | granulated activated carbon | high |
| #D019 | | GAE | granulomatous amoebic encephalitis | high |
| #D020 | | HIV | human immunodeficiency virus | high |
| #D021 | | HPC | heterotrophic plate count | high |
| #D022 | | HUS | hemolytic uremic syndrome | high |
| #D023 | | HVAC | heating, ventilation and air conditioning | high |
| #D024 | | IARC | International Agency for Research on Cancer | high |
| #D025 | | ISO | International Organization for Standardization | high |
| #D026 | | NASEM | National Academies of Sciences, Engineering and Medicine | high |
| #D027 | | NPC | National Plumbing Code (Canada) | high |
| #D028 | | NSF | NSF International | high |
| #D029 | | NTM | non-tuberculous mycobacteria | high |
| #D030 | | PAM | primary amebic meningoencephalitis | high |
| #D031 | | PCR | polymerase chain reaction | high |
| #D032 | | PHAC | Public Health Agency of Canada | high |
| #D033 | | POE | point-of-entry | high |
| #D034 | | POU | point-of-use | high |
| #D035 | | QMRA | quantitative microbial risk assessment | high |
| #D036 | | SCC | Standards Council of Canada | high |
| #D037 | | spp. | species | high |
| #D038 | | US EPA | United States Environmental Protection Agency | high |
| #D039 | | U.S. | United States | high |
| #D040 | | UV | ultraviolet | high |
| #D041 | | VBNC | viable but non-culturable | high |
| #D042 | | VTEC | verotoxin-producing Escherichia coli | high |
| #D043 | | WHO | World Health Organization | high |
| #D044 | | legionellosis | Illnesses caused by Legionella spp. are collectively known as legionellosis. | high |
| #D045 | | yersiniosis | Disease caused by Y. enterocolitica or Y. paratuberculosis is commonly referred to as yersiniosis. | high |
| #D046 | | IT | intensity measured in mW/cm2 or W/m 2× time measured in seconds resulting in a computed fluence in mJ/cm2 | high |
| #D047 | | shigellosis | disease caused by Shigella spp. | high |
| #D048 | | enteric fever | an invasive and systemic disease which involves high fever, vomiting, headaches and numerous potentially fatal complications (also known as typhoid or paratyphoid fever) | high |
| #D049 | | non-tuberculous mycobacteria | a group of over 150 distinct species that are considered to be opportunistic human pathogens | high |
| #D050 | | opportunistic pathogens | microorganisms naturally found in aquatic environments that can cause opportunistic infections when the conditions in engineered water systems allow them to multiply and spread primarily to individuals who are susceptible to infection | high |
| #D051 | | Pontiac fever | a milder, flu-like, self-limiting and non-pneumonic disease associated with exposure to Legionella | high |
| #D052 | | Legionnaires’ disease | a severe respiratory illness involving pneumonia, with symptoms that include fever, cough, chills, neurological aspects (confusion), muscle pain, headache and gastrointestinal problems (diarrhea, nausea, vomiting) | high |
| #D053 | | hypersensitivity pneumonitis | a form of pulmonary illness where inflammation within the lung is attributable to the body’s immune response to mycobacterial antigens | high |
| #D054 | | Cervical lymphadenitis | a disease of childhood, marked by swollen lymph nodes in the head or neck | high |
| #D055 | | PFGE | Pulsed-field gel electrophoresis | high |
| #D056 | | SBT | sequence-based typing | high |
| #D057 | | MAC | Mycobacterium avium complex | high |
| #D058 | | subacute cases of diarrhea | cases of diarrhea lasting from two weeks to two months | high |
| #D059 | | chronic cases of diarrhea | cases of diarrhea that persist for periods longer than two months | high |
| #D060 | | planktonic | freely floating (microorganisms) | high |
| #D061 | | rapid growers | Mycobacterium species categorized based on the time required to produce colonies on growth media | high |
| #D062 | | slow growers | Mycobacterium species categorized based on the time required to produce colonies on growth media | high |
| #D063 | | guidance documents | documents developed to provide operational or management guidance related to specific drinking water–related issues in order to make health risk assessment information available when a guideline value is not deemed necessary | high |
| #D064 | | shiga toxin-producing Escherichia coli | a subset of E. coli that can produce one or more of the potent Shiga toxins and are considered to be highly pathogenic to humans; a synonym for enterohaemorrhagic E. coli (EHEC) | high |
| #D065 | | trophozoite | a feeding (and sometimes infectious) life stage of free-living amoebae | high |
| #D066 | | cyst | a resistant life stage of free-living amoebae that can withstand environmental stress (such as desiccation and temperature extremes) and provides resistance to disinfection | high |
| #D067 | | flagellate stage | an intermediate phase in the life cycle of Naegleria fowleri | high |
| #D068 | | biotypes | variations within a species (such as Yersinia enterocolitica) differentiated by physiochemical and biochemical tests | high |
| #D069 | | serotypes | variations within a species identified based on variations in their surface O antigens (or O and H antigens) | high |
| #D070 | | zoonotic pathogens | transmitted from animals to humans | high |
| #D071 | | microaerophilic | require lower oxygen levels | high |
| #D072 | | acidophilic | acid-loving | high |
| #D073 | | thermotolerant | can survive at high temperatures, between 55 and 70°C | high |
| #D074 | | thermophilic | grow well at 25-40°C (optimum: 37°C) and can tolerate temperatures exceeding 50-60°C | high |
| #D075 | | hemolytic uremic syndrome (HUS) | results in decreased blood cell and platelet counts and acute kidney failure | high |
| #D076 | | granulomatous amoebic encephalitis (GAE) | a fatal disease which occurs when infection spreads to the brain and central nervous system | high |
| #D077 | | primary amebic meningoencephalitis (PAM) | a rare but almost always fatal disease | high |