Microbiological Contaminants Year 2020


Total coliform bacteria are used as indicators of microbial contamination of drinking water because testing for them is easy. While not disease-causing organisms themselves, they are often found in association with other microbes that are capable of causing disease. Coliform bacteria are more hardy than many disease-causing organisms; therefore, their absence from water is a good indication that the water is microbiologically safe for human consumption.
Contaminant Highest Monthly % of positive samples MCL Unit of Measure Source of Contaminant
Total Coliform 0.00% Presence of coliform bacteria in 5% of monthly samples Presence Naturally present in the environment
Bacteria
Turbidity
Turbidity is a measurement of the cloudiness of the water caused by suspended particles. We monitor it because it is a good indicator of water quality and the effectiveness of our filtration system and disinfection process.
Contaminant Location Highest Single Measurement Lowest Monthly % of Samples Meeting Limits Turbidity Limits Unit of Measure Source of Contaminant
Turbidity Wright Patman 0.26 100% ≤0.3 in 95% of samples NTU Soil runoff
Millwood 0.26 100%
Inorganic Contaminants
Contaminant Location Average Level Detected Range of Detected Level MCL MCLG Unit of Measure Source of Contaminant
Nitrate               (as Nitrogen) City of Avery 0.23 0.23 -0.23 10 10 ppm Runoff from fertilizer use; leakage from septic tanks, sewage; erosion of natural deposits
Barium WP & MW 0.03 0.013 - 0.046 2 2 ppm Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Millwood 0.0159 0 - 0.0159
Fluoride Wright Patman 0.0401 0 - 0.0401 4 4 ppm Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories
Cyanide Wright Patman 0.103 0 - 0.103 0.2 0.2 ppm Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Radioactive Contaminants (2020 Results)
Contaminant Location Average Level Detected Range of Detected Level MCL MCLG Unit of Measure Source of Contaminant
Gross Alpha Millwood 4.1 (+/- 0.9) 4.1 (+/- 0.9) 15 0 pCi/L Erosion of natural deposits of certain radioactive minerals that may emit a form of radiation known as alpha radiation
Gross Beta Millwood 2.7 (+/- 0.7) 2.7 (+/- 0.7) 50 0 pCi/L Decay of natural and man-made deposits of certain radioactive minerals that may emit forms of radiation known as photons and beta radiation.
Lead & Copper Tap Monitoring             
Contaminant Location The 90th Percentile Number of Sites Exceeding Action Level   Action Level MCLG Unit of Measure Source of Contaminant
Lead City of Avery 0.00319 0 15 0 ppb Corrosion of household plumbing systems; erosion of natural deposits
Copper 0.015405 0 1.3 1.3 ppm
Disinfectants                
Contaminant Location Annual Average Range of Detected Level MRDL MRDLG Unit of Measure Source of Contaminant
Chlorine (total) City of Avery 2.32 0.5-4.0 4 4 ppm Disinfectant used to control microbes
Disinfection By-Products
Contaminant Location Highest Locational Running Annual Average Range of Detected Level MCL MCLG Unit of Measure Source of Contaminant
Total Trihalomethane  (TTHM) City of Avery 47 27-60.1 80 N/A ppb By-product of drinking water disinfection
Haloacetic Acid City of Avery 33 26-42.3 60 0 ppb By-product of drinking water disinfection
(HAA5)
Unregulated Contaminants
Unregulated contaminants are those for which the EPA has not established drinking water standards.  The purpose of unregulated contaminant monitoring is to assist the EPA in determining the occurrence of unregulated contaminants in drinking water and whether further regulation is warranted. MCLs (Maximum Contaminant Levels) and MCLGs (Maximum Contaminant Level Goals) have not been established for all unregulated contaminants.
Contaminant Reporting Agency Range of Detected Level Avg Level Detected Unit of Measure MCLG Source of Contaminant
Chloroform TCEQ 37.6 - 51.7 44.65 ppb 70 By-products of drinking water disinfection
ADH 32.9 - 32.9 32.90
Bromodichloromethane TCEQ 0 - 10.6 10.60 ppb 0
ADH 6.88 - 6.88 6.88
Dibromochloromethane ADH 1.91 - 2.61 2.26 ppb 60
Acetone TCEQ 0 - 6.21 6.21 ppb 6000 Used in the manufacture of plastic, fibers, cosmetics, photographic film and many other kinds of consumer goods
DEFINITIONS
ADH: Arkansas Department of Health
AL: Action Level - the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which water systems must follow.
ALG: Action Level Goal - 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: Average - regulatory compliance with some MCLs are based on a 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.
MCL: Maximum Contaminant Level - the highest level of a contaminant that is allowed in drinking water
MCLG: Maximum Contaminant Level Goal  – unenforceable public health goal; 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.
MRDL: Maximum Residual Disinfectant Level - 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.
MRDLG: Maximum Residual Disinfectant Level Goal- 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)
MW: Millwood Water Treatment Plant
NA: not applicable
NTU: Nephelometric Turbidity Unit  (a measurement of turbidity)
ppm: parts per million or milligrams per liter - or one ounce in 7,350 gallons of water
ppb: parts per billion or micrograms per liter - or one ounce in 7,350,000 gallons of water
ppq: parts per quadrillion, or picograms per liter (pg/L)
ppt: parts per trillion, or nanograms per liter (ng/L)
pCi/L: picocuries per liter (a measure of radioactivity)
TCEQ: Texas Commission on Environmental Quality
TT (Treatment Technique): A required process intended to reduce the level of a contaminant in drinking water
TWU: Texarkana Water Utilities
WP: Wright Patman Water Treatment Plant
UCMR: Unregulated Contaminant Monitoring Rule

Inorganic Contaminants

Collection Date

Highest Level Detected

Range of Individual Samples

MCLG

MCL

Units

Violation

Likely Source of Contamination

 Barium

2019

0.031

0.011 - 0.031

2

2

ppm

N

Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

 Cyanide

2019

36.7

0 - 36.7

200

200

ppb

N

Discharge from plastic and fertilizer factories; Discharge from steel/metal factories.

 Fluoride

2019

0.0146

0 - 0.0146

4

4.0

ppm

N

Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.

 Turbidity

 Level Detected

Limit (Treatment Technique)

Violation

Likely Source of Contamination

 Highest single measurement

0.33 NTU

1 NTU

N

Soil runoff.

Lowest monthly % meeting limit

100%

0.3 NTU

N

Soil runoff.

Information Statement:  Turbidity is a measurement of the cloudiness of the water caused by suspended particles.  We monitor it because it is a good indicator of water quality and the effectiveness of our filtration system and disinfectants.

                                                                                                                                 Definitions and Abbreviations

ppb: 
micrograms per liter or parts per billion
ppm: 
milligrams per liter or parts per million
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 drinking water.
Information about your Drinking Water

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells.  As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants.  The presence of contaminants does not necessarily indicate that water poses a health risk.  More information about contaminants and potential health effects can be obtained by calling the EPAs Safe Drinking Water Hotline at (800) 426-4791.

Contaminants that may be present in source water include:

-   Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.

-   Inorganic contaminants, such as salts and metals, which can be naturally-occurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.

-   Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses.

-   Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, and septic systems.

-   Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.

In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health.

Contaminants may be found in drinking water that may cause taste, color, or odor problems.  These types of problems are not necessarily causes for health concerns.  For more information on taste, odor, or color of drinking water, please contact the system's business office.

You may be more vulnerable than the general population to certain microbial contaminants, such as Cryptosporidium, in drinking water.  Infants, some elderly, or immunocompromised persons such as those undergoing chemotherapy for cancer; persons who have undergone organ transplants; those who are undergoing treatment with steroids; and people with HIV/AIDS or other immune system disorders, can be particularly at risk from infections. You should seek advice about drinking water from your physician or health care providers.  Additional guidelines on appropriate means to lessen the risk of infection by Cryptosporidium are available from the Safe Drinking Water Hotline (800-426-4791).


If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. We are responsible for providing high quality drinking water, but we cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.

Information about Source Water

CITY OF AVERY purchases water from TEXARKANA WATER UTILITIES. TEXARKANA WATER UTILITIES provides purchase surface water from Wright Patman located in Texarkana, Texas.

TCEQ completed a Source Water Susceptibility for all drinking water systems that own their sources. This report describes the susceptibility and types of constituents that may come into contact with the drinking water source based on human activities and natural conditions. The system(s) from which we purchase our water received the assessment report. For more information on source water assessments and protection efforts at our system contact Kris Posey 903-933-1100.

       Violations

Chlorine

Some people who use water containing chlorine well in excess of the MRDL could experience irritating effects to their eyes and nose.  Some people who drink water containing chlorine well in excess of the MRDL could experience stomach discomfort.

Violation Type

Violation Begin

Violation End

Violation Explanation

Disinfectant Level Quarterly Operating Report (DLQOR).

01/01/2020

03/31/2020

We failed to test our drinking water for the contaminant and period indicated. Because of this failure, we cannot be sure of the quality of our drinking water during the period indicated.
Consumer Confidence Rule
The Consumer Confidence Rule requires community water systems to prepare and provide to their customers annual consumer confidence reports on the quality of the water delivered by the systems.

Violation Type

Violation Begin

Violation End

Violation Explanation

CCR ADEQUACY/AVAILABILITY/CONTENT

07/01/2020

11/19/2020

We failed to provide to you, our drinking water customers, an annual report that adequately informed you about the quality of our drinking water and the risks from exposure to contaminants detected in our drinking water.

 

 

 

 

 

 

 

 

 

 

 

 


2020 Consumer Confidence Report




                                                                                        2020 Consumer Confidence Report for Public Water System CITY OF AVERY

This is your water quality report for January 1 to December 31, 2020
For more information regarding this report contact:
 CITY OF AVERY provides surface water from Wright Patman located in Texarkana Texas.
 Name   Kristopher Posey
 Phone   903-933-1100

Este reporte incluye información importante sobre el agua para tomar.  Para asistencia en español, favor de llamar al telefono (903) 933-1100.

 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.

 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)