Total Trihalomethanes definition

Total Trihalomethanes or “TTHM” means the sum of the concentrations in milligrams per liter (mg/L) of the trihalomethane compounds (bromodichloromethane, bromoform, chloroform, and dibromochloromethane), rounded to two significant figures after addition.
Total Trihalomethanes. (TTHM) means the MCL for trihalomethanes. This is the sum of four of ten possible isomers of chlorine/bromine/methane compounds, all known as trihalomethanes (THM). TTHM is defined as the arithmetic sum of the concentrations in micro grams per liter of only four of these (chloroform, bromodichloromethane, dibromochloromethane, and bromoform) rounded to two significant figures. This measurement is made by samples which are "quenched," meaning that a chlorine neutralizing agent has been added, preventing further THM formation in the samples.
Total Trihalomethanes or “TTHM” means the sum of the concentrations in milligrams per liter of bromodichloromethane, dibromochloromethane, tribromoethane (bromoform) and trichloromethane (chloroform) rounded, to 2 significant figures;

Examples of Total Trihalomethanes in a sentence

Organic Chemicals Other Than Total Trihalomethanes, Sampling and Analytical Requirements.

TTHM/HAA5: Total Trihalomethanes and Haloacetic Acids (TTHM and HAA5) are formed as a by-product of drinking water chlorination.

Maximum Total Trihalomethane Potential means the maximum concentration of Total Trihalomethanes produced in a given water containing a Disinfectant residual after seven days at a temperature of 25°C or above.

The analysis may include Total Organic Carbon, 5-day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Nitrate Nitrogen (NO3-N), Ammonia Nitrogen (NH3-N), Total Kjeldahl Nitrogen (TKN), pH, Chloride, Total Phosphorus, Phenol, Total Volatile Organic Compounds, Fecal Coliform, Calcium, Sodium, Magnesium, Sodium Adsorption Ratio (SAR), Total Trihalomethanes, Toxicity Test Parameters and Total Dissolved Solids.

Total Trihalomethanes (TTHM) means the sum, rounded to two significant figures, of the concentrations in milligrams per liter of the trihalomethane compounds, trichloromethane (chloroform), bromodichloromethane, dibromochloromethane, and tribromomethane (bromoform).


More Definitions of Total Trihalomethanes

Total Trihalomethanes or “TTHM” means the sum of the concentration of trihalomethanes (THMs), in milligrams per liter (mg/ℓ), rounded to two significant figures.
Total Trihalomethanes or "TTHM" means the sum of the concentration in milligrams per liter of the THM compounds:
Total Trihalomethanes or "TTHM" means the sum of the concentrations of the trihalomethanes expressed in milligrams per liter (mg/L) and rounded to two significant figures. For the purpose of these regulations, the TTHMs shall mean trichloromethane (chloroform), dibromochloromethane, bromodichloromethane, and tribromomethane (bromoform).
Total Trihalomethanes means the sum of the concentrations of the following trihalomethane compounds: trichlo- romethane (chloroform), dibromochloromethane, bromo-dichloromethane, and tribromomethane (bromoform).
Total Trihalomethanes or "TTHM" means the sum of the concentration in milligrams per liter of the trihalomethane compounds (trichloromethane (chloroform), dibromochloromethane, bromodichloromethane, and tribromomethane (bromoform)), rounded to two significant figures." Transient non-community water system" or “TWS” means a non-community water system that does not regularly serve at least twenty-five of the same persons over six months per year.
Total Trihalomethanes or "TTHM" means the sum of the concentration, in milligrams per liter,
Total Trihalomethanes means the sum of the concentrations of the following trihalomethane compounds: trichlo-romethane (chloroform), dibromochloromethane, bromo-dichloromethane, and tribromomethane (bromoform). “Transient, noncommunity water system” means a public water system that:‌