2017 Consumer Confidence Report for Public Water System LILLY GROVE SUD
This is your water quality report for January 1 to December 31, 2017
Water Loss: In the water audit summitted to the Texas Water Development Board for the time period of Jan - Dec 2017,
our system loss an Est 2,866,220 gallons of water. If you any questions about our water loss please call the office
LILLY GROVE SUD provides surface water and ground water from the Carrizo and Wilcox Aquifer located in Nacogdoches.
Definitions and Abbreviations
Definitions and Abbreviations The following tables contain scientific terms and measures, some of which
may require explanation.
Action Level: The concentration of a contaminant which, if exceeded, triggers treatment
or other requirements which a water system must follow.
Action Level Goal (ALG): The level of a contaminant in drinking water below which there is no known
or expected risk to health. ALGs allow for a margin of safety.
Avg: Regulatory compliance with some MCLs are based on running annual average of monthly samples.
Level 1 Assessment: A Level 1 assessment is a study of the water system to identify potential
problems and determine (if possible) why total coliform bacteria have been
found in our water system.
Level 2 Assessment: A Level 2 assessment is a very detailed study of the water system to
identify potential problems and determine (if possible) why an E. coli MCL
violation has occurred and/or why total coliform bacteria have been found
In our water system on multiple occasions.
Maximum Contaminant Level or 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 Contaminant Level Goal or 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 residual disinfectant level or 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.
Maximum residual disinfectant level goal or 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 contaminants.
MFL Million fibers per liter (a measure of asbestos)
mrem: Millirems per year (a measure of radiation absorbed by the body)
na: not applicable.
NTU Nephelometric turbidity units (a measure of turbidity)
pCi/L Picocuries per liter (a measure of radioactivity)
ppb: Micrograms per liter or parts per billion - or one ounce in 7,350,000
gallons of water.
ppm: Milligrams per liter or parts per million - or one ounce in 7,350 gallons
ppq Parts per quadrillion, or picograms per liter (pg/L)
ppt Parts per trillion, or nanograms per liter (ng/L)
Treatment Technique or TT: A required process intended to reduce the level of a contaminant in