2022 WATER QUALITY REPORT page 3
Radioactive Substances
SUBSTANCE UNITS
PB PLANT 2017
JK PLANT 2021
Radium 228 pCi / L 1.43 < 1.0 5 NA
Beta / Photon Emitters pCi / L 4.8 5.2 50 NA
Gross Alpha Particle Activity pCi / L < 2.0 < 3.0 15 NA
Microbiological Substances
MCL MCLG POSSIBLE SOURCE OF SUBSTANCE
Decay of natural and man-made deposits
Decay of natural and man-made deposits
Decay of natural and man-made deposits
Tarrant regional water district analyzed all raw water sources for Cryptosporidium and there were no detections of Cryptosporidium for any month in 2022 . Cryptosporidium is a pathogen which may be found in water contaminated by feces . Although filtration removes Cryptosporidium , it cannot guarantee 100 % removal .
Turbidity
TURBIDITY FOR BOTH PLANTS UNITS AVG . LEVEL |
MIN . LEVEL |
MAX . LEVEL |
MCL MCLG |
POSSIBLE SOURCE OF SUBSTANCE |
Highest single measurement NTU 0.1 0 0.32 TT = 1.0 0 Soil runoff
Percentage of samples less than 0.3 NTU % 98.73 % 97.05 % 99.94 % TT = 95 %
Turbidity has no health effects . However , turbidity can interfere with disinfection and provide a medium for microbial growth . Turbidity may indicate the presence of disease-causing organisms . These organisms include bacteria , viruses and parasites that can cause symptoms such as nausea , cramps , diarrhea and associated headaches .
TABLE DEFINITIONS
Action Level ( AL ): The concentration of a contaminant which , if exceeded , triggers treatment or other requirements which a water system must follow .
< ( numbers ): Less than the amount listed . ≥ ( numbers ): Equal to or greater than the amount listed .
Maximum Contaminant Level Goal ( MCLG ): The level of a contaminant in drinking water below which there is no known or expected risk to health . MCLGs allow for a margin of safety .
Maximum Contaminant Level ( MCL ): The highest level of a contaminant that is allowed in drinking water . MCLs are set as close to the MCLGs as feasible using the best available treatment technology .
Maximum Residual Disinfectant Level Goal ( MRDLG ): The level of a drinking water disinfectant below which there is no known or expected risk to health . MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contamination .
Maximum Residual Disinfectant Level ( MRDL ): The highest level of a disinfectant allowed in drinking water . There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants .
ND ( Not Detected ): No level of the parameter was detected . NA : Not applicable .
NE : Not established .
NTU ( Nephelometric Turbidity Units ): A unit used when measuring turbidity , a measure of the cloudiness of the water .
pCi / L ( picocuries per Liter ): A measure of radioactivity in the water .
ppb ( parts per billion , ug / L ): A unit of measurement roughly equal to 1 drop in 100,000 gallons .
ppm ( parts per million , mg / L ): A unit of measurement roughly equal to 1 drop in 100 gallons .
TT ( Treatment Technique ): A required process intended to reduce the level of a contaminant in drinking water .
Raw Water : Water that has not yet been treated for consumption .
Level 1 Assessment : A study of the water system to identify possible problems and determine ( if possible ) why total coliform bacteria were found .
Level 2 Assessment : A very detailed study of the water system to identify potential problems and determine ( if possible ) why an E . Coli Maximum .
Contaminant Level ( MCL ) Violation has occurred and / or why total coliform bacteria were found on multiple occasions .