Mesa Water District (CA) Water Quality

Mesa Water District is a large public water system in EPA region 9 that provides tap water for the 92626, 92627, 92663, 92707 zip codes. It has 27 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 6.661 µg/L. The maximum reported level of Manganese was 28.4 µg/L. There were 2 contamintants found in the Mesa Water District water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (13)

1,2,3-trichloropropane (13)

1,3-butadiene (13)

1,4-dioxane (13)

1-butanol (15)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (19)

17-alpha-ethynylestradiol (13)

17-beta-estradiol (13)

1H,1H,2H,2H-perfluorodecane sulfonic acid (19)

1H,1H,2H,2H-perfluorohexane sulfonic acid (19)

1H,1H,2H,2H-perfluorooctane sulfonic acid (19)

2,4-dinitrotoluene (18)

2,6-dinitrotoluene (18)

2-methoxyethanol (15)

2-propen-1-ol (Allyl Alcohol) (15)

4,4'-dichloro dichlorophenyl ethylene (DDE) (18)

4,8-dioxa-3H-perfluorononanoic acid (19)

4-androstene-3,17-dione (13)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (19)

alpha-hexachlorocyclohexane (15)

anatoxin-a (8)

bromochloromethane (Halon 1011) (13)

bromomethane (13)

Butylated Hydroxyanisole (15)

chlorate (18)

chlorodifluoromethane (HCFC-22) (13)

chloromethane (13)

chlorpyrifos (15)

chromium (18)

chromium-6 (18)

cobalt (18)

cylindrospermopsin (8)

dimethipin (15)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (18)

equilin (13)

estriol (13)

estrone (13)

ethoprop (15)

Germanium (15)

HAA5 (five regulated haloacetic acids) (30)

HAA6Br (six brominated haloacetic acids) (30)

HAA9 (nine haloacetic acids) (30)

hexafluoropropylene oxide dimer acid (GenX) (19)

lithium (20)

Manganese (15)

methyl-tertiary-butyl-ether (MTBE) (18)

molinate (18)

molybdenum (18)

N-ethyl perfluorooctanesulfonamidoacetic acid (20)

N-methyl perfluorooctanesulfonamidoacetic acid (20)

nitrobenzene (18)

nonafluoro-3,6-dioxaheptanoic acid (19)

o-toluidine (15)

oxyfluorfen (15)

perchlorate (22)

perfluoro(2-ethoxyethane)sulfonic acid (19)

perfluoro-3-methoxypropanoic acid (19)

perfluoro-4-methoxybutanoic acid (19)

perfluorobutanesulfonic acid (32)

perfluorobutanoic acid (19)

perfluorodecanoic acid (19)

perfluorododecanoic acid (19)

perfluoroheptanesulfonic acid (19)

perfluoroheptanoic acid (32)

perfluorohexanesulfonic acid (32)

perfluorohexanoic acid (19)

perfluorononanoic acid (32)

perfluorooctanesulfonic acid (32)

perfluorooctanoic acid (32)

perfluoropentanesulfonic acid (19)

perfluoropentanoic acid (19)

perfluorotetradecanoic acid (20)

perfluorotridecanoic acid (20)

perfluoroundecanoic acid (19)

profenofos (15)

quinoline (15)

s-ethyl-dipropylthiocarbamate (EPTC) (18)

strontium (18)

tebuconazole (15)

terbacil (18)

testosterone (13)

total microcystins (8)

Total Permethrin (15)

tribufos (15)

vanadium (18)

Sampling Facilities

Well 3B
Ground Water (GW)

EP #20 - EP-MCWD3B-01Entry Point to the Distribution System (EP)

Well 7
Ground Water (GW)

EP #19 - EP-MCWD7-01Entry Point to the Distribution System (EP)

Well 1B
Ground Water (GW)

EP #35 - EP-MCWD1B-01Entry Point to the Distribution System (EP)

MWD Intertie 1
Surface Water (SW)

IS-DIEMER-PLANTEFF-MESAEntry Point to the Distribution System (EP)

Well 5
Ground Water (GW)

EP-MCWD5-01Entry Point to the Distribution System (EP)

Colored Trtmt (Wells 6 & 11)
Ground Water (GW)

MCWD-COLR-TOTALBLENDEntry Point to the Distribution System (EP)

Well 9B
Ground Water (GW)

EP-MESA9B-01Entry Point to the Distribution System (EP)

Well 12
Ground Water (GW)

EP-MESA12-01Entry Point to the Distribution System (EP)
DL-MCWD-JOANN-01Distribution System (DS)
DL-MCWD-FAIR-01Distribution System (DS)
DL-MCWD-MCLINTOCK-01Distribution System (DS)
DL-MCWD-KALMUS-01Distribution System (DS)
DL-MCWD-VIRGINIA-01Distribution System (DS)
DL-MCWD-21ST-01Distribution System (DS)
DL-MCWD-18TH-01Distribution System (DS)

Well 14
Ground Water (GW)

EP-MESA14-01Entry Point to the Distribution System (EP)

Well 9
Ground Water (GW)

EP #25: EP-MCWD9-01Entry Point to the Distribution System (EP)

Distribution System- DSMRT Site- GW
Ground Water (GW)

DL-MCWD-JOANN-01Maximum Residence Time (MR)
DL-MCWD-MCLINTOCK-01Maximum Residence Time (MR)

Distribution System - DSMRT Site-SW
Surface Water (SW)

DL-MCWD-16ST-01Maximum Residence Time (MR)

EP- #034 CLORED WATER PLANT EFF FOR WELL 06 OR 11
Ground Water (GW)

COLR-MCWD6-01Entry Point to the Distribution System (EP)

EP- #029 WELL 05 - UV - PLANT EFFLUENT
Ground Water (GW)

UV-MCWD5-01Entry Point to the Distribution System (EP)

EP- #021 WELL 08 CHLORAMINATION XCLD
Ground Water (GW)

EP-MCWD8-01Entry Point to the Distribution System (EP)

D/DBP Max. Residence Time-Site 1
Ground Water (GW)

DL-MCWD-JOANN-01Maximum Residence Time (MR)

D/DBP Max. Residence Time - Site 3
Surface Water (SW)

DL-MCWD-16ST-01Maximum Residence Time (MR)

DB/DBP Max. Residence Time Site 2
Ground Water (GW)

DL-MCWD-MCLINTOCK-01Maximum Residence Time (MR)

WELL 04
Ground Water (GW)

WELL 04 05S/10W-34Q03SR (SR)

WELL 05
Ground Water (GW)

WELL 05 05S/10W-33C05SR (SR)

WELL 07
Ground Water (GW)

WELL 07 05S/10W-33J02SR (SR)

WELL 03B
Ground Water (GW)

WELL 03B 05S/10W-33A04SR (SR)

WELL 08
Ground Water (GW)

WELL 08 05S/10W-34L01SR (SR)

WELL 06
Ground Water (GW)

WELL 06 04S/10W-34Q04SR (SR)

WELL 09
Ground Water (GW)

WELL 09 05S/10W-34F03SR (SR)

WELL 01B
Ground Water (GW)

WELL 01B 05S/10W-34H10SR (SR)

WELL 11
Ground Water (GW)

WELL 11 3010004-014 (MCWD-11/1)SR (SR)

FAQ

Is Mesa Water District tap water safe to drink?

When was Mesa Water District last tested for water contamination?

The latest water samples were taken on August 14th, 2024.