City of Mesa (AZ) Water Quality

City of Mesa is a large public water system in EPA region 9 that provides tap water for the 85201 - 85215 zip codes. It has 98 facilities where the water supply was tested for 85 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 56.44 µg/L. The maximum reported level of Manganese was 10 µg/L. There were 2 contamintants found in the City of Mesa water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (61)

1,2,3-trichloropropane (61)

1,3-butadiene (61)

1,4-dioxane (61)

1-butanol (57)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (61)

17-alpha-ethynylestradiol (61)

17-beta-estradiol (61)

1H,1H,2H,2H-perfluorodecane sulfonic acid (61)

1H,1H,2H,2H-perfluorohexane sulfonic acid (61)

1H,1H,2H,2H-perfluorooctane sulfonic acid (61)

2,4-dinitrotoluene (66)

2,6-dinitrotoluene (66)

2-methoxyethanol (57)

2-propen-1-ol (Allyl Alcohol) (57)

4,4'-dichloro dichlorophenyl ethylene (DDE) (66)

4,8-dioxa-3H-perfluorononanoic acid (61)

4-androstene-3,17-dione (61)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (61)

alpha-hexachlorocyclohexane (57)

anatoxin-a (24)

bromochloromethane (Halon 1011) (61)

bromomethane (61)

Butylated Hydroxyanisole (57)

chlorate (128)

chlorodifluoromethane (HCFC-22) (61)

chloromethane (61)

chlorpyrifos (57)

chromium (128)

chromium-6 (128)

cobalt (128)

cylindrospermopsin (24)

dimethipin (57)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (57)

equilin (61)

estriol (61)

estrone (61)

ethoprop (57)

Germanium (57)

HAA5 (five regulated haloacetic acids) (48)

HAA6Br (six brominated haloacetic acids) (48)

HAA9 (nine haloacetic acids) (48)

hexafluoropropylene oxide dimer acid (GenX) (61)

lithium (61)

Manganese (57)

methyl-tertiary-butyl-ether (MTBE) (65)

molinate (66)

molybdenum (128)

N-ethyl perfluorooctanesulfonamidoacetic acid (61)

N-methyl perfluorooctanesulfonamidoacetic acid (61)

nitrobenzene (65)

nonafluoro-3,6-dioxaheptanoic acid (61)

o-toluidine (57)

oxyfluorfen (57)

perchlorate (66)

perfluoro(2-ethoxyethane)sulfonic acid (61)

perfluoro-3-methoxypropanoic acid (61)

perfluoro-4-methoxybutanoic acid (61)

perfluorobutanesulfonic acid (122)

perfluorobutanoic acid (61)

perfluorodecanoic acid (61)

perfluorododecanoic acid (61)

perfluoroheptanesulfonic acid (61)

perfluoroheptanoic acid (122)

perfluorohexanesulfonic acid (122)

perfluorohexanoic acid (61)

perfluorononanoic acid (122)

perfluorooctanesulfonic acid (122)

perfluorooctanoic acid (122)

perfluoropentanesulfonic acid (61)

perfluoropentanoic acid (61)

perfluorotetradecanoic acid (61)

perfluorotridecanoic acid (61)

perfluoroundecanoic acid (61)

profenofos (57)

quinoline (57)

s-ethyl-dipropylthiocarbamate (EPTC) (66)

strontium (128)

tebuconazole (57)

terbacil (66)

testosterone (61)

total microcystins (24)

Total Permethrin (57)

tribufos (57)

vanadium (128)

Sampling Facilities

BRWTP Finished Water
Surface Water (SW)

EPDS001Entry Point to the Distribution System (EP)

Signal Butte WTP Finished Water
Multiple Sources (MX)

EPDS003Entry Point to the Distribution System (EP)

CW7 EPDS
Ground Water (GW)

EPDS137Entry Point to the Distribution System (EP)
EPDS101Entry Point to the Distribution System (EP)

CW8 EPDS
Ground Water (GW)

EPDS138Entry Point to the Distribution System (EP)
EPDS102Entry Point to the Distribution System (EP)

CW12 EPDS
Ground Water (GW)

EPDS106Entry Point to the Distribution System (EP)

CW14 EPDS
Ground Water (GW)

EPDS134Entry Point to the Distribution System (EP)

CW15 EPDS
Ground Water (GW)

EPDS109Entry Point to the Distribution System (EP)

CW16 EPDS
Ground Water (GW)

EPDS110Entry Point to the Distribution System (EP)

CW18 EPDS
Ground Water (GW)

EPDS111Entry Point to the Distribution System (EP)

CW19 EPDS
Ground Water (GW)

EPDS112Entry Point to the Distribution System (EP)

CW20 EPDS
Ground Water (GW)

EPDS113Entry Point to the Distribution System (EP)

CW22 EPDS
Ground Water (GW)

EPDS115Entry Point to the Distribution System (EP)

CW24 EPDS
Ground Water (GW)

EPDS117Entry Point to the Distribution System (EP)

CW25 EPDS
Ground Water (GW)

EPDS119Entry Point to the Distribution System (EP)

Brooks Reservoir
Multiple Sources (MX)

EPDS126Entry Point to the Distribution System (EP)

FF5 EPDS
Ground Water (GW)

EPDS203Entry Point to the Distribution System (EP)

FF14 EPDS
Ground Water (GW)

EPDS205Entry Point to the Distribution System (EP)

DW6 EPDS
Ground Water (GW)

EPDS302Entry Point to the Distribution System (EP)

DW9 EPDS
Ground Water (GW)

EPDS304Entry Point to the Distribution System (EP)

DW13 EPDS
Ground Water (GW)

EPDS313Entry Point to the Distribution System (EP)

DW15 EPDS
Ground Water (GW)

EPDS315Entry Point to the Distribution System (EP)

CW10 EPDS
Ground Water (GW)

EPDS104Entry Point to the Distribution System (EP)

DW16 EPDS
Ground Water (GW)

EPDS316Entry Point to the Distribution System (EP)

DW12 EPDS
Ground Water (GW)

EPDS312Entry Point to the Distribution System (EP)

CW11 EPDS
Ground Water (GW)

EPDS131Entry Point to the Distribution System (EP)

DW3 EPDS
Ground Water (GW)

EPDS301Entry Point to the Distribution System (EP)

DW7 EPDS
Ground Water (GW)

EPDS357Entry Point to the Distribution System (EP)

DW14 EPDS
Ground Water (GW)

EPDS306Entry Point to the Distribution System (EP)

DW17 EPDS
Ground Water (GW)

EPDS317Entry Point to the Distribution System (EP)

DW21 EPDS
Ground Water (GW)

EPDS321Entry Point to the Distribution System (EP)

CC001 - 07025
Surface Water (SW)

EPTDS from Phoenix WaterEntry Point to the Distribution System (EP)

CW9 EPDS
Ground Water (GW)

EPDS103Entry Point to the Distribution System (EP)

CW14 EPDS
Ground Water (GW)

EPDS134Entry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

4257 N Pinnacle Ridge RdDistribution System (DS)
3249 N 91st StDistribution System (DS)
1103 S HorneDistribution System (DS)
1921 S 39th StDistribution System (DS)
1111 E McKellips RdDistribution System (DS)
2738 S Noched de PazDistribution System (DS)
2421 N Harris DrDistribution System (DS)
6122 E Innovation Way SDistribution System (DS)
607 N Dobson RdDistribution System (DS)
7040 E Superstition Springs BlvdDistribution System (DS)
2330 N Lemon CirDistribution System (DS)
1969 S MiramarDistribution System (DS)

EPDS107
Ground Water (GW)

EPDS107Entry Point to the Distribution System (EP)

EPDS301
Ground Water (GW)

EPDS301Entry Point to the Distribution System (EP)

EPDS303
Ground Water (GW)

EPDS303Entry Point to the Distribution System (EP)

EPDS306
Ground Water (GW)

EPDS306Entry Point to the Distribution System (EP)

EPDS317
Ground Water (GW)

EPDS317Entry Point to the Distribution System (EP)

EPDS321
Ground Water (GW)

EPDS321Entry Point to the Distribution System (EP)

EPDS322
Ground Water (GW)

EPDS322Entry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

MR001Maximum Residence Time (MR)
MR102Maximum Residence Time (MR)
MR104Maximum Residence Time (MR)
MR107Maximum Residence Time (MR)
MR111Maximum Residence Time (MR)
MR112Maximum Residence Time (MR)
MR113Maximum Residence Time (MR)
MR115Maximum Residence Time (MR)
MR119Maximum Residence Time (MR)
MR203Maximum Residence Time (MR)
MR205Maximum Residence Time (MR)
MR302Maximum Residence Time (MR)
MR304Maximum Residence Time (MR)
MR306Maximum Residence Time (MR)
MR312Maximum Residence Time (MR)
MR313Maximum Residence Time (MR)
DSMRT for Phoenix WaterMaximum Residence Time (MR)

EPDS105
Ground Water (GW)

EPDS105Entry Point to the Distribution System (EP)

EPDS202
Ground Water (GW)

EPDS202Entry Point to the Distribution System (EP)

EPDS401
Ground Water (GW)

EPDS401Entry Point to the Distribution System (EP)

MR101
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR102
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR104
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR107
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR109
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR111
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR112
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR113
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR115
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR119
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR126
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR202
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR203
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR205
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR302
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR304
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR306
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR312
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR313
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

MR401
Multiple Sources (MX)

Distribution SystemMaximum Residence Time (MR)

CITY WELL 25
Ground Water (GW)

UK (UK)

WELL 126
Ground Water (GW)

UK (UK)

DESERT WELLS 15
Ground Water (GW)

UK (UK)

DESERT WELLS 14
Ground Water (GW)

UK (UK)

FALCON FIELD 14
Ground Water (GW)

UK (UK)

CITY WELL #12
Ground Water (GW)

UK (UK)

DESERT WELL #7
Ground Water (GW)

UK (UK)

CITY WELL #14
Ground Water (GW)

UK (UK)

CITY WELL #11
Ground Water (GW)

UK (UK)

CITY WELL #13
Ground Water (GW)

UK (UK)

CITY WELL #16
Ground Water (GW)

UK (UK)

CITY WELL #7
Ground Water (GW)

UK (UK)

FALCON FIELD #5
Ground Water (GW)

UK (UK)

CITY WELL #18
Ground Water (GW)

UK (UK)

CITY WELL #8
Ground Water (GW)

UK (UK)

CITY WELL #9
Ground Water (GW)

UK (UK)

FALCON FIELD #4
Ground Water (GW)

UK (UK)

CITY WELL #19
Ground Water (GW)

UK (UK)

SRP ALMA SCHOOL
Ground Water (GW)

UK (UK)

DESERT SAGE 9
Ground Water (GW)

UK (UK)

CITY WELL #20
Ground Water (GW)

UK (UK)

CITY WELL #21
Ground Water (GW)

UK (UK)

CITY WELL #15
Ground Water (GW)

UK (UK)

CITY WELL #22
Ground Water (GW)

UK (UK)

CITY WELL #23
Ground Water (GW)

UK (UK)

CITY WELL #24
Ground Water (GW)

UK (UK)

DESERT WELL #6
Ground Water (GW)

UK (UK)

DESERT WELL #9
Ground Water (GW)

UK (UK)

DESERT SAGE #13
Ground Water (GW)

UK (UK)

FALCON FIELD #8
Ground Water (GW)

UK (UK)

DW-10
Ground Water (GW)

UK (UK)

DESERT WELL 013
Ground Water (GW)

UK (UK)

01
Surface Water (SW)

UK (UK)

FAQ

Is City of Mesa tap water safe to drink?

When was City of Mesa last tested for water contamination?

The latest water samples were taken on June 9th, 2025.