Total trihalomethanes (TTHMs)
Columbus Public Water System
Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform. Read More.
Studies conducted in the U.S. and Europe have found that drinking tap water that carries disinfection byproducts increases the risk of developing bladder cancer. In animal studies, all trihalomethanes cause liver, kidney and intestinal tumors. Some human epidemiological studies also reported an association between disinfection byproducts and an increased risk of problems during pregnancy, including spontaneous miscarriage, cardiovascular defects, neural tube defects and low birth weight.
The health guideline of 0.15 parts per billion, or ppb, for the group of four trihalomethanes, or THM4/TTHM, was defined in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 51.3 ppb | 64 | 64 | 15.4 ppb - 88.5 ppb |
2015 | 47.0 ppb | 64 | 64 | 16.7 ppb - 111.0 ppb |
2016 | 38.5 ppb | 64 | 64 | 15.3 ppb - 70.9 ppb |
2017 | 40.2 ppb | 64 | 64 | 15.4 ppb - 86.5 ppb |
2018 | 33.8 ppb | 64 | 64 | 9.60 ppb - 74.5 ppb |
2019 | 35.6 ppb | 48 | 48 | 7.40 ppb - 66.2 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.15 ppb
The health guideline of 0.15 parts per billion, or ppb, for the group of four trihalomethanes, or THM4/TTHM, was defined in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level.
EPA Maximum Contaminant
Level (MCL) 80 ppb
The legal limit for the group of four trihalomethanes, established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer due to exposure to trihalomethanes.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-05 | 2014-29320-THM | 26.4 ppb |
2014-03-05 | 2014-29325-THM | 15.4 ppb |
2014-03-05 | 2014-29335-THM | 33.2 ppb |
2014-03-05 | 2014-29336-THM | 30.3 ppb |
2014-03-05 | 2014-29340-THM | 32.1 ppb |
2014-03-05 | 2014-29354-THM | 27.3 ppb |
2014-03-05 | 2014-29359-THM | 32.2 ppb |
2014-03-05 | 2014-29360-THM | 24.2 ppb |
2014-03-05 | 2014-29365-THM | 29.2 ppb |
2014-03-05 | 2014-29366-THM | 37.6 ppb |
2014-03-05 | 2014-29367-THM | 37.9 ppb |
2014-03-05 | 2014-29368-THM | 25.2 ppb |
2014-03-05 | 2014-29369-THM | 26.1 ppb |
2014-03-05 | 2014-29370-THM | 23.2 ppb |
2014-03-05 | 2014-29371-THM | 26.7 ppb |
2014-03-05 | 2014-29372-THM | 27.6 ppb |
2014-06-04 | 2014-31835-THM | 48.3 ppb |
2014-06-04 | 2014-31836-THM | 54.5 ppb |
2014-06-04 | 2014-31837-THM | 72.4 ppb |
2014-06-04 | 2014-31844-THM | 57.5 ppb |
2014-06-04 | 2014-31845-THM | 64.3 ppb |
2014-06-04 | 2014-31849-THM | 48.8 ppb |
2014-06-04 | 2014-31853-THM | 59.6 ppb |
2014-06-04 | 2014-31854-THM | 56.3 ppb |
2014-06-04 | 2014-31855-THM | 53.6 ppb |
2014-06-04 | 2014-31856-THM | 75.9 ppb |
2014-06-04 | 2014-31857-THM | 60.0 ppb |
2014-06-04 | 2014-31858-THM | 60.7 ppb |
2014-06-04 | 2014-31859-THM | 72.1 ppb |
2014-06-04 | 2014-31860-THM | 76.9 ppb |
2014-06-04 | 2014-31865-THM | 17.5 ppb |
2014-06-04 | 2014-31885-THM | 56.2 ppb |
2014-09-03 | 2014-34402-THM | 77.8 ppb |
2014-09-03 | 2014-34407-THM | 27.1 ppb |
2014-09-03 | 2014-34435-THM | 88.5 ppb |
2014-09-03 | 2014-34436-THM | 77.8 ppb |
2014-09-03 | 2014-34440-THM | 78.5 ppb |
2014-09-03 | 2014-34445-THM | 70.6 ppb |
2014-09-03 | 2014-34446-THM | 70.1 ppb |
2014-09-03 | 2014-34447-THM | 84.7 ppb |
2014-09-03 | 2014-34452-THM | 83.3 ppb |
2014-09-03 | 2014-34453-THM | 79.0 ppb |
2014-09-03 | 2014-34454-THM | 81.3 ppb |
2014-09-03 | 2014-34455-THM | 83.1 ppb |
2014-09-03 | 2014-34456-THM | 72.4 ppb |
2014-09-03 | 2014-34457-THM | 63.3 ppb |
2014-09-03 | 2014-34458-THM | 74.9 ppb |
2014-09-03 | 2014-34475-THM | 85.4 ppb |
2014-12-03 | 2014-37157-THM | 52.9 ppb |
2014-12-03 | 2014-37162-THM | 20.6 ppb |
2014-12-03 | 2014-37173-THM | 47.4 ppb |
2014-12-03 | 2014-37174-THM | 33.6 ppb |
2014-12-03 | 2014-37177-THM | 32.6 ppb |
2014-12-03 | 2014-37182-THM | 43.3 ppb |
2014-12-03 | 2014-37194-THM | 40.2 ppb |
2014-12-03 | 2014-37216-THM | 37.7 ppb |
2014-12-03 | 2014-37217-THM | 40.5 ppb |
2014-12-03 | 2014-37218-THM | 48.0 ppb |
2014-12-03 | 2014-37219-THM | 51.8 ppb |
2014-12-03 | 2014-37220-THM | 57.6 ppb |
2014-12-03 | 2014-37226-THM | 50.2 ppb |
2014-12-03 | 2014-37227-THM | 42.4 ppb |
2014-12-03 | 2014-37228-THM | 51.1 ppb |
2014-12-03 | 2014-37303-THM | 48.1 ppb |
2015-03-06 | 2015-39599-THM | 33.7 ppb |
2015-03-06 | 2015-39600-THM | 40.0 ppb |
2015-03-06 | 2015-39601-THM | 38.6 ppb |
2015-03-06 | 2015-39602-THM | 37.7 ppb |
2015-03-06 | 2015-39603-THM | 41.7 ppb |
2015-03-06 | 2015-39604-THM | 36.3 ppb |
2015-03-06 | 2015-39605-THM | 34.9 ppb |
2015-03-06 | 2015-39606-THM | 38.3 ppb |
2015-03-06 | 2015-39607-THM | 37.5 ppb |
2015-03-06 | 2015-39608-THM | 34.0 ppb |
2015-03-06 | 2015-39609-THM | 27.0 ppb |
2015-03-06 | 2015-39610-THM | 31.8 ppb |
2015-03-06 | 2015-39611-THM | 28.6 ppb |
2015-03-06 | 2015-39612-THM | 27.8 ppb |
2015-03-06 | 2015-39613-THM | 31.4 ppb |
2015-03-06 | 2015-39614-THM | 16.7 ppb |
2015-06-03 | 2015-42138-THM | 47.7 ppb |
2015-06-03 | 2015-42146-THM | 53.8 ppb |
2015-06-03 | 2015-42151-THM | 21.4 ppb |
2015-06-03 | 2015-42170-THM | 45.4 ppb |
2015-06-03 | 2015-42180-THM | 43.9 ppb |
2015-06-03 | 2015-42184-THM | 111.0 ppb |
2015-06-03 | 2015-42185-THM | 50.4 ppb |
2015-06-03 | 2015-42186-THM | 55.7 ppb |
2015-06-03 | 2015-42187-THM | 54.1 ppb |
2015-06-03 | 2015-42188-THM | 52.2 ppb |
2015-06-03 | 2015-42189-THM | 55.3 ppb |
2015-06-03 | 2015-42190-THM | 54.9 ppb |
2015-06-03 | 2015-42191-THM | 43.9 ppb |
2015-06-03 | 2015-42192-THM | 44.1 ppb |
2015-06-03 | 2015-42204-THM | 45.8 ppb |
2015-06-05 | 2015-42257-THM | 44.3 ppb |
2015-09-02 | 2015-44913-THM | 29.4 ppb |
2015-09-02 | 2015-44917-THM | 25.5 ppb |
2015-09-02 | 2015-44932-THM | 83.6 ppb |
2015-09-02 | 2015-44937-THM | 84.7 ppb |
2015-09-02 | 2015-44940-THM | 50.6 ppb |
2015-09-02 | 2015-44941-THM | 78.5 ppb |
2015-09-02 | 2015-44950-THM | 51.5 ppb |
2015-09-02 | 2015-44952-THM | 43.4 ppb |
2015-09-02 | 2015-44955-THM | 49.6 ppb |
2015-09-02 | 2015-44956-THM | 55.3 ppb |
2015-09-02 | 2015-44959-THM | 64.5 ppb |
2015-09-02 | 2015-44960-THM | 71.8 ppb |
2015-09-02 | 2015-44961-THM | 78.7 ppb |
2015-09-02 | 2015-44962-THM | 47.5 ppb |
2015-09-02 | 2015-44963-THM | 87.7 ppb |
2015-09-02 | 2015-44964-THM | 51.5 ppb |
2015-12-02 | 2015-47503-THM | 48.2 ppb |
2015-12-02 | 2015-47505-THM | 59.4 ppb |
2015-12-02 | 2015-47506-THM | 39.4 ppb |
2015-12-02 | 2015-47507-THM | 44.7 ppb |
2015-12-02 | 2015-47508-THM | 42.9 ppb |
2015-12-02 | 2015-47509-THM | 36.3 ppb |
2015-12-02 | 2015-47510-THM | 48.8 ppb |
2015-12-02 | 2015-47511-THM | 52.8 ppb |
2015-12-02 | 2015-47512-THM | 42.8 ppb |
2015-12-02 | 2015-47513-THM | 35.1 ppb |
2015-12-02 | 2015-47514-THM | 37.1 ppb |
2015-12-02 | 2015-47461-THM | 38.9 ppb |
2015-12-02 | 2015-47462-THM | 50.1 ppb |
2015-12-02 | 2015-47467-THM | 33.8 ppb |
2015-12-02 | 2015-47487-THM | 51.9 ppb |
2015-12-02 | 2015-47496-THM | 32.7 ppb |
2016-03-02 | 2016-49895-THM | 41.1 ppb |
2016-03-02 | 2016-49900-THM | 38.9 ppb |
2016-03-02 | 2016-49903-THM | 26.5 ppb |
2016-03-02 | 2016-49908-THM | 24.2 ppb |
2016-03-02 | 2016-49919-THM | 32.3 ppb |
2016-03-02 | 2016-49920-THM | 26.6 ppb |
2016-03-02 | 2016-49921-THM | 28.0 ppb |
2016-03-02 | 2016-49922-THM | 24.1 ppb |
2016-03-02 | 2016-49923-THM | 40.1 ppb |
2016-03-02 | 2016-49924-THM | 32.6 ppb |
2016-03-02 | 2016-49925-THM | 29.0 ppb |
2016-03-02 | 2016-49926-THM | 33.8 ppb |
2016-03-02 | 2016-49927-THM | 28.6 ppb |
2016-03-02 | 2016-49928-THM | 28.2 ppb |
2016-03-02 | 2016-49929-THM | 25.0 ppb |
2016-03-02 | 2016-49936-THM | 40.4 ppb |
2016-06-01 | 2016-52600-THM | 32.9 ppb |
2016-06-01 | 2016-52605-THM | 15.3 ppb |
2016-06-01 | 2016-52646-THM | 58.9 ppb |
2016-06-01 | 2016-52653-THM | 66.7 ppb |
2016-06-01 | 2016-52658-THM | 55.8 ppb |
2016-06-01 | 2016-52661-THM | 33.4 ppb |
2016-06-01 | 2016-52676-THM | 30.8 ppb |
2016-06-01 | 2016-52677-THM | 35.6 ppb |
2016-06-01 | 2016-52678-THM | 33.5 ppb |
2016-06-01 | 2016-52679-THM | 31.7 ppb |
2016-06-01 | 2016-52680-THM | 46.1 ppb |
2016-06-01 | 2016-52681-THM | 54.5 ppb |
2016-06-01 | 2016-52682-THM | 47.0 ppb |
2016-06-01 | 2016-52683-THM | 58.3 ppb |
2016-06-01 | 2016-52684-THM | 44.1 ppb |
2016-06-01 | 2016-52685-THM | 43.1 ppb |
2016-09-07 | 2016-55843-THM | 51.8 ppb |
2016-09-07 | 2016-55848-THM | 32.4 ppb |
2016-09-07 | 2016-55867-THM | 70.9 ppb |
2016-09-07 | 2016-55870-THM | 42.0 ppb |
2016-09-07 | 2016-55877-THM | 58.8 ppb |
2016-09-07 | 2016-55880-THM | 67.7 ppb |
2016-09-07 | 2016-55957-THM | 38.6 ppb |
2016-09-07 | 2016-55958-THM | 56.6 ppb |
2016-09-07 | 2016-55959-THM | 52.7 ppb |
2016-09-07 | 2016-55960-THM | 47.0 ppb |
2016-09-07 | 2016-55961-THM | 53.4 ppb |
2016-09-07 | 2016-55962-THM | 56.0 ppb |
2016-09-07 | 2016-55963-THM | 45.8 ppb |
2016-09-07 | 2016-55964-THM | 67.7 ppb |
2016-09-07 | 2016-55965-THM | 42.2 ppb |
2016-09-07 | 2016-55966-THM | 46.9 ppb |
2016-12-07 | 2016-58667-THM | 29.1 ppb |
2016-12-07 | 2016-58672-THM | 35.6 ppb |
2016-12-07 | 2016-58687-THM | 36.7 ppb |
2016-12-07 | 2016-58692-THM | 40.5 ppb |
2016-12-07 | 2016-58696-THM | 22.2 ppb |
2016-12-07 | 2016-58698-THM | 33.6 ppb |
2016-12-07 | 2016-58699-THM | 28.1 ppb |
2016-12-07 | 2016-58701-THM | 26.5 ppb |
2016-12-07 | 2016-58702-THM | 22.6 ppb |
2016-12-07 | 2016-58706-THM | 33.9 ppb |
2016-12-07 | 2016-58709-THM | 23.0 ppb |
2016-12-07 | 2016-58710-THM | 25.5 ppb |
2016-12-07 | 2016-58711-THM | 17.3 ppb |
2016-12-07 | 2016-58712-THM | 23.6 ppb |
2016-12-07 | 2016-58729-THM | 18.9 ppb |
2016-12-07 | 2016-58736-THM | 30.4 ppb |
2017-03-01 | 2017-61097-THM | 19.5 ppb |
2017-03-01 | 2017-61102-THM | 25.1 ppb |
2017-03-01 | 2017-61117-THM | 31.7 ppb |
2017-03-01 | 2017-61122-THM | 27.3 ppb |
2017-03-01 | 2017-61129-THM | 15.8 ppb |
2017-03-01 | 2017-61136-THM | 29.8 ppb |
2017-03-01 | 2017-61139-THM | 22.0 ppb |
2017-03-01 | 2017-61140-THM | 23.6 ppb |
2017-03-01 | 2017-61141-THM | 21.0 ppb |
2017-03-01 | 2017-61142-THM | 17.1 ppb |
2017-03-01 | 2017-61143-THM | 25.4 ppb |
2017-03-01 | 2017-61144-THM | 29.8 ppb |
2017-03-01 | 2017-61145-THM | 19.8 ppb |
2017-03-01 | 2017-61146-THM | 20.2 ppb |
2017-03-01 | 2017-61147-THM | 30.0 ppb |
2017-03-01 | 2017-61148-THM | 20.4 ppb |
2017-06-07 | 2017-64232-THM | 50.5 ppb |
2017-06-07 | 2017-64237-THM | 56.8 ppb |
2017-06-07 | 2017-64240-THM | 49.6 ppb |
2017-06-07 | 2017-64245-THM | 39.0 ppb |
2017-06-07 | 2017-64258-THM | 31.7 ppb |
2017-06-07 | 2017-64265-THM | 58.0 ppb |
2017-06-07 | 2017-64268-THM | 47.4 ppb |
2017-06-07 | 2017-64269-THM | 41.8 ppb |
2017-06-07 | 2017-64270-THM | 44.0 ppb |
2017-06-07 | 2017-64271-THM | 38.5 ppb |
2017-06-07 | 2017-64272-THM | 50.5 ppb |
2017-06-07 | 2017-64273-THM | 46.0 ppb |
2017-06-07 | 2017-64274-THM | 40.6 ppb |
2017-06-07 | 2017-64275-THM | 63.6 ppb |
2017-06-07 | 2017-64276-THM | 46.2 ppb |
2017-06-07 | 2017-64277-THM | 40.3 ppb |
2017-09-06 | 2017-66922-THM | 53.2 ppb |
2017-09-06 | 2017-66927-THM | 32.5 ppb |
2017-09-06 | 2017-66942-THM | 78.2 ppb |
2017-09-06 | 2017-66947-THM | 60.2 ppb |
2017-09-06 | 2017-67008-THM | 64.2 ppb |
2017-09-06 | 2017-67009-THM | 86.5 ppb |
2017-09-06 | 2017-67010-THM | 75.8 ppb |
2017-09-06 | 2017-67011-THM | 74.8 ppb |
2017-09-06 | 2017-67012-THM | 59.2 ppb |
2017-09-06 | 2017-67013-THM | 37.2 ppb |
2017-09-06 | 2017-67014-THM | 61.6 ppb |
2017-09-06 | 2017-67015-THM | 68.9 ppb |
2017-09-06 | 2017-67016-THM | 40.7 ppb |
2017-09-06 | 2017-67017-THM | 50.5 ppb |
2017-09-06 | 2017-67027-THM | 39.2 ppb |
2017-09-06 | 2017-67038-THM | 72.3 ppb |
2017-12-06 | 2017-69601-THM | 25.7 ppb |
2017-12-06 | 2017-69606-THM | 39.6 ppb |
2017-12-06 | 2017-69621-THM | 35.8 ppb |
2017-12-06 | 2017-69626-THM | 46.2 ppb |
2017-12-06 | 2017-69652-THM | 48.1 ppb |
2017-12-06 | 2017-69659-THM | 18.1 ppb |
2017-12-06 | 2017-69660-THM | 28.3 ppb |
2017-12-06 | 2017-69661-THM | 32.0 ppb |
2017-12-06 | 2017-69662-THM | 45.5 ppb |
2017-12-06 | 2017-69663-THM | 36.8 ppb |
2017-12-06 | 2017-69664-THM | 26.9 ppb |
2017-12-06 | 2017-69665-THM | 27.9 ppb |
2017-12-06 | 2017-69666-THM | 15.4 ppb |
2017-12-06 | 2017-69667-THM | 28.1 ppb |
2017-12-06 | 2017-69668-THM | 17.9 ppb |
2017-12-06 | 2017-69669-THM | 22.2 ppb |
2018-03-07 | 2018-72027-THM | 20.2 ppb |
2018-03-07 | 2018-72032-THM | 23.9 ppb |
2018-03-07 | 2018-72035-THM | 13.7 ppb |
2018-03-07 | 2018-72039-THM | 28.3 ppb |
2018-03-07 | 2018-72073-THM | 19.4 ppb |
2018-03-07 | 2018-72074-THM | 23.0 ppb |
2018-03-07 | 2018-72075-THM | 9.80 ppb |
2018-03-07 | 2018-72076-THM | 9.60 ppb |
2018-03-07 | 2018-72077-THM | 14.3 ppb |
2018-03-07 | 2018-72078-THM | 13.1 ppb |
2018-03-07 | 2018-72079-THM | 11.7 ppb |
2018-03-07 | 2018-72080-THM | 21.5 ppb |
2018-03-07 | 2018-72081-THM | 18.4 ppb |
2018-03-07 | 2018-72082-THM | 17.1 ppb |
2018-03-07 | 2018-72083-THM | 19.2 ppb |
2018-03-07 | 2018-72084-THM | 17.7 ppb |
2018-06-06 | 2018-76938-THM | 51.9 ppb |
2018-06-06 | 2018-76943-THM | 17.1 ppb |
2018-06-06 | 2018-76960-THM | 37.0 ppb |
2018-06-06 | 2018-76961-THM | 37.9 ppb |
2018-06-06 | 2018-76971-THM | 34.0 ppb |
2018-06-06 | 2018-76976-THM | 34.0 ppb |
2018-06-06 | 2018-76986-THM | 30.2 ppb |
2018-06-06 | 2018-76987-THM | 43.2 ppb |
2018-06-06 | 2018-76988-THM | 44.6 ppb |
2018-06-06 | 2018-76989-THM | 36.8 ppb |
2018-06-06 | 2018-76990-THM | 29.5 ppb |
2018-06-06 | 2018-76991-THM | 28.2 ppb |
2018-06-06 | 2018-76992-THM | 46.2 ppb |
2018-06-06 | 2018-76993-THM | 54.9 ppb |
2018-06-06 | 2018-76994-THM | 41.3 ppb |
2018-06-06 | 2018-76995-THM | 47.1 ppb |
2018-09-05 | 2018-82127-THM | 62.3 ppb |
2018-09-05 | 2018-82132-THM | 73.5 ppb |
2018-09-05 | 2018-82136-THM | 55.4 ppb |
2018-09-05 | 2018-82140-THM | 25.9 ppb |
2018-09-05 | 2018-82191-THM | 74.5 ppb |
2018-09-05 | 2018-82192-THM | 51.1 ppb |
2018-09-05 | 2018-82205-THM | 67.5 ppb |
2018-09-05 | 2018-82206-THM | 70.3 ppb |
2018-09-05 | 2018-82207-THM | 54.7 ppb |
2018-09-05 | 2018-82208-THM | 47.0 ppb |
2018-09-05 | 2018-82209-THM | 58.6 ppb |
2018-09-05 | 2018-82210-THM | 58.9 ppb |
2018-09-05 | 2018-82211-THM | 52.7 ppb |
2018-09-05 | 2018-82212-THM | 53.3 ppb |
2018-09-05 | 2018-82213-THM | 54.9 ppb |
2018-09-05 | 2018-82214-THM | 56.6 ppb |
2018-12-05 | 2018-86512-THM | 21.1 ppb |
2018-12-05 | 2018-86517-THM | 18.4 ppb |
2018-12-05 | 2018-86533-THM | 28.2 ppb |
2018-12-05 | 2018-86539-THM | 12.3 ppb |
2018-12-05 | 2018-86547-THM | 23.7 ppb |
2018-12-05 | 2018-86552-THM | 20.7 ppb |
2018-12-05 | 2018-86558-THM | 21.9 ppb |
2018-12-05 | 2018-86559-THM | 22.8 ppb |
2018-12-05 | 2018-86560-THM | 15.7 ppb |
2018-12-05 | 2018-86561-THM | 11.8 ppb |
2018-12-05 | 2018-86562-THM | 34.3 ppb |
2018-12-05 | 2018-86563-THM | 24.4 ppb |
2018-12-05 | 2018-86564-THM | 22.9 ppb |
2018-12-05 | 2018-86565-THM | 25.8 ppb |
2018-12-05 | 2018-86566-THM | 25.2 ppb |
2018-12-05 | 2018-86567-THM | 23.4 ppb |
2019-03-06 | 2019-89961-THM | 12.7 ppb |
2019-03-06 | 2019-89966-THM | 14.8 ppb |
2019-03-06 | 2019-89983-THM | 15.9 ppb |
2019-03-06 | 2019-89984-THM | 7.90 ppb |
2019-03-06 | 2019-89989-THM | 7.40 ppb |
2019-03-06 | 2019-89990-THM | 14.3 ppb |
2019-03-06 | 2019-89991-THM | 9.70 ppb |
2019-03-06 | 2019-89992-THM | 11.9 ppb |
2019-03-06 | 2019-89993-THM | 16.0 ppb |
2019-03-06 | 2019-89994-THM | 18.5 ppb |
2019-03-06 | 2019-89995-THM | 12.6 ppb |
2019-03-06 | 2019-89996-THM | 13.7 ppb |
2019-03-06 | 2019-89997-THM | 13.8 ppb |
2019-03-06 | 2019-89998-THM | 13.8 ppb |
2019-03-06 | 2019-90005-THM | 15.7 ppb |
2019-03-06 | 2019-90010-THM | 16.5 ppb |
2019-06-05 | 2019-94299-THM | 46.7 ppb |
2019-06-05 | 2019-94304-THM | 17.0 ppb |
2019-06-05 | 2019-94320-THM | 49.4 ppb |
2019-06-05 | 2019-94325-THM | 52.0 ppb |
2019-06-05 | 2019-94331-THM | 41.7 ppb |
2019-06-05 | 2019-94337-THM | 26.8 ppb |
2019-06-05 | 2019-94338-THM | 40.8 ppb |
2019-06-05 | 2019-94339-THM | 40.2 ppb |
2019-06-05 | 2019-94340-THM | 43.0 ppb |
2019-06-05 | 2019-94341-THM | 51.9 ppb |
2019-06-05 | 2019-94342-THM | 50.8 ppb |
2019-06-05 | 2019-94343-THM | 43.3 ppb |
2019-06-05 | 2019-94344-THM | 43.3 ppb |
2019-06-05 | 2019-94345-THM | 41.9 ppb |
2019-06-05 | 2019-94346-THM | 37.9 ppb |
2019-06-05 | 2019-94347-THM | 34.4 ppb |
2019-09-04 | 2019-98916-THM | 58.0 ppb |
2019-09-04 | 2019-98920-THM | 22.5 ppb |
2019-09-04 | 2019-98936-THM | 64.0 ppb |
2019-09-04 | 2019-98941-THM | 66.2 ppb |
2019-09-04 | 2019-98944-THM | 61.1 ppb |
2019-09-04 | 2019-98945-THM | 58.9 ppb |
2019-09-04 | 2019-98946-THM | 61.1 ppb |
2019-09-04 | 2019-98947-THM | 48.4 ppb |
2019-09-04 | 2019-98948-THM | 60.6 ppb |
2019-09-04 | 2019-98949-THM | 53.3 ppb |
2019-09-04 | 2019-98950-THM | 36.9 ppb |
2019-09-04 | 2019-98951-THM | 65.2 ppb |
2019-09-04 | 2019-98952-THM | 40.6 ppb |
2019-09-04 | 2019-98953-THM | 54.0 ppb |
2019-09-04 | 2019-98960-THM | 35.2 ppb |
2019-09-04 | 2019-98967-THM | 46.7 ppb |