2022 WATER QUALITY REPORT page 4
Construction started in 2022 on a new laboratory / maintenance facility at the John F . Kubala Water Treatment Plant and the remodeling of a minilaboratory used during the treatment process .
Photos courtesy Freese & Nichols
TABLE B | UNREGULATED CONTAMINANTS
These substances are not currently regulated by EPA . The purpose of unregulated contaminant monitoring is to assist EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted .
SUBSTANCE
ANNUAL RUNNING AVERAGE OF ALL SAMPLES
UNITS AVG . LEVEL
MIN . LEVEL
MAX . LEVEL
MCL Chloroform ppb 2.10 1.50 2.40 NE NE Bromodichloromethane ppb 2.80 2.30 3.20 NE NE Chlorodibromomethane ppb 3.10 2.70 3.60 NE 60 Bromoform ppb 1.10 0.60 1.40 NE NE
MCLG
POSSIBLE SOURCE OF SUBSTANCE
Byproduct of drinking water disinfection ; not regulated individually ; included in total Trihalomethanes
Dichloroacetic Acid ppb 3.62 3.44 3.86 NE NE Bromoacetic Acid ppb 2.31 2.24 2.39 NE NE Dibromoacetic Acid ppb 1.47 1.46 1.51 NE NE Chloroacetic Acid ppb 0.25 0.16 0.44 NE NE
Byproduct of drinking water disinfection ; not regulated individually ; included in Haloacetic Acids .
Trichloroacetic Acid ppb 0.03 ND 0.07 NE 300
OTHER SUBSTANCES OF INTEREST
SUBSTANCE |
UNITS |
AVERAGE LEVEL |
MINIMUM LEVEL |
MAXIMUM LEVEL |
Calcium |
ppm |
27.0 |
25.0 |
29.0 |
Chloride |
ppm |
21.0 |
18.0 |
24.0 |
Magnesium |
ppm |
3.99 |
3.67 |
4.3 |
pH |
pH units |
8.06 |
7.81 |
8.28 |
Potassium |
ppm |
4.93 |
4.86 |
4.99 |
Sodium |
ppm |
26.7 |
26.4 |
27 |
Sulfate |
ppm |
42.4 |
37.9 |
51.3 |
Alkalinity , Total |
ppm |
87.1 |
54.5 |
113 |
Total Dissolved Solids |
ppm |
194 |
160 |
235 |
Hardness , Total ( as CaCO3 ) |
ppm grains / gallon |
95.1
5.6
|
77.4
4.5
|
130
7.6
|