Fort Walton Beach — 2015 Consumer Water Quality Report — reading text

Results (mo./yr.) (Yes/No) Erosion of natural deposits; discharge from fertilizer and aluminum factories. understand these terms, we’ve provided Fluoride (ppm) Jan 2014 No 1.3 0.5-1.3 4 4.0 Water additive which promotes strong teeth when at the optimum level of 0.7 the following definitions: ppm n/a: not applicable Discharge of drilling wastes; discharge from metal refineries; erosion of Barium (ppm) Jan 2014 No 0.36 0.005-0.36 2 2 natural deposits ND: means not detected and indicates that the substance was not found by laboratory analysis. Sodium (ppm) Jan 2014 No 120 38-120 n/a 160 Salt water intrusion, leaching from soil Parts per million (ppm) or milligrams per liter RADIOACTIVE CONTAMINANTS (mg/l): one part by weight of analyte to one million Contaminant and Unit of Dates of MCL Range of parts by weight of the water sample. sampling Violation Level Detected MCLG MCL Likely Source of Contamination Parts per billion (ppb) or micrograms per liter Measurement Results (mo./yr.) (Yes/No) (µg/l): one part by weight of analyte to one billion Radium 226 +228 or Jan 2014 No 1.1 0.3-1.1 0 5 Erosion of natural deposits parts by weight of the water sample. combined radium (pCi/L) STAGE 2 DISINFECTANTS AND DISINFECTION BY-PRODUCTS . Picocuries per liter (pCi/L): measure of the MCL or radioactivity in water. Disinfectant or Dates of MRDL Range of MCLG or MCL or Action Level (AL): the concentration of a Contaminant and Unit of sampling Level Detected Likely Source of Contamination Measurement (mo./yr.) Violation Results MRDLG MRDL contaminant which, if exceeded, triggers treatment (Yes/No) or other requirements which a water system must MRDLG MRDL follow. Chlorine (ppm) – Stage 1 Jan-Dec 2015 No 0.72 0.58-0.93 Water additive used to control microbes Maximum Contaminant Level or MCL: the =4 = 4.0 highest level of a contaminant that is allowed in Haloacetic Acids (five) drinking water. MCLs are set as close to the Jan & July 2015 No 5.7 ND-5.7 n/a MCL = 60 By-product of drinking water disinfection (HAA5) (ppb) MCLGs as feasible using the best available TTHM (Total treatment technology. Jan & July 2015 No 31.5 11.9 -31.5 n/a MCL = 80 By-product of drinking water disinfection trihalomethanes) (ppb) Maximum Contaminant Level Goal or MCLG: LEAD AND COPPER (TAP WATER) the level of a contaminant in drinking water below th No. which there is no known or expected risk to health. Contaminant and Unit of Dates of Sampling AL Exceeded 90 Percentile AL (Action Measurement (mo./yr.) (Yes/No) Result Exceeding MCLG Level) Likely Source of Contamination MCLGs allow for a margin of safety. the AL Maximum residual disinfectant level or MRDL: Corrosion of household plumbing systems; erosion of natural deposits; the highest level of a disinfectant allowed in Copper (tap water) (ppm) Jun-Sept 2014 No 0.17 0 of 30 1.3 1.3 leaching from wood preservatives drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of Lead (tap water) (ppb) Jun-Sept 2014 No 3.3 0 of 30 0 15 Corrosion of household plumbing systems; erosion of natural deposits microbial contaminants. Maximum residual disinfectant level goal or MICROBIOLOGICAL CONTAMINANTS MRDLG: the level of a drinking water disinfectant below which there is no known or expected risk to Dates of MCL Highest health. MRDLGs do not reflect the benefits of the Contaminant and Unit of Measurement sampling Violation Monthly MCLG MCL Likely Source of Contamination use of disinfectants to control microbial (mo./yr.) (Yes/No) Number contaminants. For systems collecting fewer than 40 samples per month: Jan-Dec Total Coliform Bacteria Yes 3 0 presence of coliform bacteria in 1 sample collected during Naturally present in the environment