City of Manteca (CA) Water Quality

City of Manteca is a large public water system in EPA region 9 that provides tap water for the 95336, 95337 zip codes. It has 41 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 31 µg/L. The maximum reported level of Manganese was 210 µg/L. There were 2 contamintants found in the City of Manteca water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (26)

1,2,3-trichloropropane (26)

1,3-butadiene (26)

1,4-dioxane (26)

1-butanol (26)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (12)

1H,1H,2H,2H-perfluorodecane sulfonic acid (12)

1H,1H,2H,2H-perfluorohexane sulfonic acid (12)

1H,1H,2H,2H-perfluorooctane sulfonic acid (12)

2,4-dinitrotoluene (31)

2,6-dinitrotoluene (31)

2-methoxyethanol (26)

2-propen-1-ol (Allyl Alcohol) (26)

4,4'-dichloro dichlorophenyl ethylene (DDE) (31)

4,8-dioxa-3H-perfluorononanoic acid (12)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (12)

alpha-hexachlorocyclohexane (26)

anatoxin-a (8)

bromochloromethane (Halon 1011) (26)

bromomethane (26)

Butylated Hydroxyanisole (26)

chlorate (32)

chlorodifluoromethane (HCFC-22) (26)

chloromethane (26)

chlorpyrifos (26)

chromium (32)

chromium-6 (32)

cobalt (32)

cylindrospermopsin (8)

dimethipin (26)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (35)

ethoprop (26)

Germanium (26)

HAA5 (five regulated haloacetic acids) (24)

HAA6Br (six brominated haloacetic acids) (24)

HAA9 (nine haloacetic acids) (24)

hexafluoropropylene oxide dimer acid (GenX) (12)

lithium (12)

Manganese (26)

methyl-tertiary-butyl-ether (MTBE) (31)

molinate (31)

molybdenum (32)

N-ethyl perfluorooctanesulfonamidoacetic acid (12)

N-methyl perfluorooctanesulfonamidoacetic acid (12)

nitrobenzene (31)

nonafluoro-3,6-dioxaheptanoic acid (12)

o-toluidine (26)

oxyfluorfen (26)

perchlorate (31)

perfluoro(2-ethoxyethane)sulfonic acid (12)

perfluoro-3-methoxypropanoic acid (12)

perfluoro-4-methoxybutanoic acid (12)

perfluorobutanesulfonic acid (38)

perfluorobutanoic acid (12)

perfluorodecanoic acid (12)

perfluorododecanoic acid (12)

perfluoroheptanesulfonic acid (12)

perfluoroheptanoic acid (38)

perfluorohexanesulfonic acid (38)

perfluorohexanoic acid (12)

perfluorononanoic acid (38)

perfluorooctanesulfonic acid (38)

perfluorooctanoic acid (38)

perfluoropentanesulfonic acid (12)

perfluoropentanoic acid (12)

perfluorotetradecanoic acid (12)

perfluorotridecanoic acid (12)

perfluoroundecanoic acid (12)

profenofos (26)

quinoline (26)

s-ethyl-dipropylthiocarbamate (EPTC) (31)

strontium (32)

tebuconazole (26)

terbacil (31)

total microcystins (8)

Total Permethrin (26)

tribufos (26)

vanadium (32)

Sampling Facilities

SSJID Intertie
Surface Water (SW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well 17
Ground Water (GW)

EP #29 - Well 17 TreatedEntry Point to the Distribution System (EP)

Well 16
Ground Water (GW)

EP #27 - Well 16 TreatedEntry Point to the Distribution System (EP)

Well 15
Ground Water (GW)

EP #26 - Well 15 TreatedEntry Point to the Distribution System (EP)

Well 13
Ground Water (GW)

EP #25 - Well 13 TreatedEntry Point to the Distribution System (EP)

Well 12
Ground Water (GW)

EP #24 - Well 12 TreatedEntry Point to the Distribution System (EP)

Well 14
Ground Water (GW)

EP #18 - Well 14 TreatedEntry Point to the Distribution System (EP)

Well 24
Ground Water (GW)

EP #45 - Well 24 TreatedEntry Point to the Distribution System (EP)

Well 25
Ground Water (GW)

EP #43 - Well 25 TreatedEntry Point to the Distribution System (EP)

Well 22
Ground Water (GW)

EP #41 - Well 22 TreatedEntry Point to the Distribution System (EP)

Well 19
Ground Water (GW)

EP #33 - Well 19 TreatedEntry Point to the Distribution System (EP)

1262 Schaefer Ave
Multiple Sources (MX)

DBP7 - 1262 Schaefer AveDistribution System (DS)

2011 Schauffhausen Street
Multiple Sources (MX)

DBP1 - 2011 Schauffhausen StreetDistribution System (DS)

1482 Bridgeport Lane
Multiple Sources (MX)

DBP2 - 1482 Bridgeport LaneDistribution System (DS)

168 Cornerstone Way
Multiple Sources (MX)

DBP3 - 168 Cornerstone WayDistribution System (DS)

1349 Ghia Way
Multiple Sources (MX)

DBP4 - 1349 Ghia WayDistribution System (DS)

1376 Gianna Lane
Multiple Sources (MX)

DBP6 - 1376 Gianna LaneDistribution System (DS)

Well 18
Ground Water (GW)

EP #31 - Well 18 TreatedEntry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

DSMRT for SSJIDMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for GW SitesMaximum Residence Time (MR)

EP- #023 WELL 10 - TREATED
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #021 WELL 08 - TREATED
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #037 WELL 23 - TREATED
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

WELL 05
Ground Water (GW)

WELL 05 02S/07E-05B01SR (SR)

WELL 08
Ground Water (GW)

WELL 08 01S/07E-32H02SR (SR)

WELL 09
Ground Water (GW)

WELL 09 02S/07E-05E01SR (SR)

WELL 10
Ground Water (GW)

WELL 10 01S/07E-33L01SR (SR)

WELL 12
Ground Water (GW)

WELL 12 01S/07E-29G01SR (SR)

WELL 13
Ground Water (GW)

WELL 13 02S/07E-04N01SR (SR)

WELL 14
Ground Water (GW)

WELL 14 01S/07E-28Q01SR (SR)

WELL 15
Ground Water (GW)

WELL 15 01S/07E-32D02SR (SR)

WELL 16
Ground Water (GW)

WELL 16 3910005-016SR (SR)

WELL 05 - TREATED
Ground Water (GW)

WELL 05 - TREATED J39/005-05TRTEntry Point to the Distribution System (EP)

WELL 17
Ground Water (GW)

WELL 17 3910005-017SR (SR)

WELL 18
Ground Water (GW)

WELL 18 J39/005-018SR (SR)

WELL 19
Ground Water (GW)

WELL 19 - 032019SR (SR)

WELL 20
Ground Water (GW)

WELL 20 - 034020SR (SR)

WELL 23
Ground Water (GW)

WELL 23 - 036023SR (SR)

WELL 23 - TREATED
Ground Water (GW)

WELL 23 - 037023TEntry Point to the Distribution System (EP)

WELL 21
Ground Water (GW)

WELL 21 - 038021RSR (SR)

WELL 22
Ground Water (GW)

WELL 22 - 040022RSR (SR)

FAQ

Is City of Manteca tap water safe to drink?

When was City of Manteca last tested for water contamination?

The latest water samples were taken on April 15th, 2025.