2017 Consumer Confidence Report

Microbiological Contaminants
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

Total Coliform Bacteria
Highest Monthly % of positive samples

0.00%
MCL

Presence of coliform bacteria in 5% of monthly samples
Unit of Measure

Presence
Source of Contaminant
Naturally present in the environment 


Turbidity
Turbidity is a measure of the cloudiness of the water. It is used to indicate water quality and filtration effectiveness (e.g., whether disease-causing organisms are present). Higher turbidity levels are often associated with higher levels of disease-causing microorganisms such as viruses, parasites and some bacteria. These organisms can cause symptoms such as nausea, cramps, diarrhea and associated headaches.
Contaminant
Turbidity
Location
Wright Patman, Millwood
Highest Single Measurement
0.37, 0.25
Lowest Monthly % of Samples Meeting Limits
98.1%, 100%
Turbidity Limits
≤0.3 in 95% of samples
Unit of Measure
NTU
Source of Contaminant
Soil runoff


Inorganic Contaminants
Contaminant
Nitrate (as Nitrogen)
Reporting Agency
TCEQ, ADH
Average Level Detected
0.117, 0.14
Range of Detected Level
0.076 - 0.158, 0.14 - 0.14
MCL
10
MCLG
10
Unit of Measure
ppm
Source of Contaminant
Runoff from fertilizer use; leaking from septic tanks, sewage; erosion of natural deposits

Contaminant
Barium
Reporting Agency
TCEQ, ADH
Average Level Detected
0.033, 0.17
Range of Detected Level
0.046 - 0.019, <0.2 - 0.0114
MCL
2
MCLG
2
Unit of Measure
ppm
Source of Contaminant
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits


Organic Contaminates
Atrazine
Reporting Agency
TCEQ
Average Level Detected
0.1
Range of Detected Level
0.1 - 0.1
MCL
3
MCLG
3
Unit of Measure
ppb
Source of Contaminant
Runoff from herbacide used on row crops.

Radioactive Contaminants (2016 Sample Results)
Combined Radium (226 + 228)

Reporting Agency
ADH

Average Level Detected
1.5

Range of Detected Level
1.5 - 1.5

MCL
5

MCLG
0
Unit of Measure
pCi/L
Source of Contaminant
Erosion of natural deposits

Lead & Copper Tap Monitoring
Contaminant
Lead, Copper
Location
City of Avery
The 90th Percentile
0.00319, 0.015405
Number of Sites Exceeding Action Level
0
Action Level
0.015, 1.3
Unit of Measure
ppm
Source of Contaminant
Corrosion of household plumbing systems; erosion of natural deposits; erosion of natural deposits

Disinfectant
Contaminant
Chlorine (total)
Location
City of Avery
Annual Average
1.2
Range of Detected Level
5.0-3.1
MRDL
4
MRDLG
4
Unit of Measure
ppm
Source of Contaminant
Disinfectant used to control microbes

Disinfection By-Products
Contaminant
Total Trihalomethane  (TTHM)
Location
City of Avery
Highest Locational Running Annual Average
0.0622
Range of Detected Level
0382-102
MCL
80
MCLG
N/A
Unit of Measure
ppb
Source of Contaminant
By-product of drinking water disinfection
Contaminate
Haloacetic Acid (HAA5)
Location
City of Avery
Highest Locational Running Annual Average
0.0235
Range of Detected Level
0174-0588
MCL
60
MCLG
0
Unit of Measure
ppb
Source of Contaminant
By-product of drinking water disinfection
Contaminant
Chlorite
Location
Texas, Arkansas
Highest Quarterly Distribution Average
426.2, 155.6
Range of Detected Level
<10 - 604, <20 - 409
MCL
1000
MCLG
800
Unit of Measure
ppb
Source of Contaminant
By-product of drinking water disinfection.

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 Contamiinant Levels) and MCLGs (Maximum Contaminant Level Goals) have not been established for all unregulated contaminants.
Contaminant
Chloroform​
Reporting Agency
TCEQ, ADH
Level Detected Range
46.5 - 161,
Avg Level Detected
103.75, 37.40
Unit of Measure
ppb
MCLG
70
Source of Contaminant
By-product of drinking water disinfection.
Contaminant
Bromodichloromethane
Reporting Agency
TCEQ, ADH
Level Detected Range
10.2 - 14.0, 7.00
Avg Level Detected
12.10, 7.00
Unit of Measure
ppb
MCLG
0
Source of Contaminant

By-product of drinking water disinfection.
Contaminant
Dibromochloromethane
Reporting Agency
TCEQ, ADH
Level Detected Range
1.04 - 3.24, 1.36
Avg Level Detected
2.14, 1.36
Unit of Measure
ppb
MCLG
60
Source of Contaminant
By-product of drinking water disinfection.


***If you have any questions or concerns please contact Jody Runyan at 903-933-1100 M-F 8-4.