City of Gilroy (CA) Water Quality

City of Gilroy is a large public water system in EPA region 9 that provides tap water for the 95020 zip codes. It has 20 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 1.58 µg/L. The maximum reported level of Manganese was 116 µg/L. There were 2 contamintants found in the City of Gilroy water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (18)

1,2,3-trichloropropane (18)

1,3-butadiene (18)

1,4-dioxane (18)

1-butanol (18)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (7)

1H,1H,2H,2H-perfluorodecane sulfonic acid (7)

1H,1H,2H,2H-perfluorohexane sulfonic acid (7)

1H,1H,2H,2H-perfluorooctane sulfonic acid (7)

2,4-dinitrotoluene (15)

2,6-dinitrotoluene (15)

2-methoxyethanol (18)

2-propen-1-ol (Allyl Alcohol) (18)

4,4'-dichloro dichlorophenyl ethylene (DDE) (15)

4,8-dioxa-3H-perfluorononanoic acid (7)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (7)

alpha-hexachlorocyclohexane (18)

bromochloromethane (Halon 1011) (18)

bromomethane (18)

Butylated Hydroxyanisole (18)

chlorate (20)

chlorodifluoromethane (HCFC-22) (18)

chloromethane (18)

chlorpyrifos (18)

chromium (20)

chromium-6 (20)

cobalt (20)

dimethipin (18)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (14)

ethoprop (18)

Germanium (18)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (7)

lithium (7)

Manganese (18)

methyl-tertiary-butyl-ether (MTBE) (15)

molinate (15)

molybdenum (20)

N-ethyl perfluorooctanesulfonamidoacetic acid (7)

N-methyl perfluorooctanesulfonamidoacetic acid (7)

nitrobenzene (15)

nonafluoro-3,6-dioxaheptanoic acid (7)

o-toluidine (18)

oxyfluorfen (18)

perchlorate (15)

perfluoro(2-ethoxyethane)sulfonic acid (7)

perfluoro-3-methoxypropanoic acid (7)

perfluoro-4-methoxybutanoic acid (7)

perfluorobutanesulfonic acid (25)

perfluorobutanoic acid (7)

perfluorodecanoic acid (7)

perfluorododecanoic acid (7)

perfluoroheptanesulfonic acid (7)

perfluoroheptanoic acid (25)

perfluorohexanesulfonic acid (25)

perfluorohexanoic acid (7)

perfluorononanoic acid (25)

perfluorooctanesulfonic acid (25)

perfluorooctanoic acid (25)

perfluoropentanesulfonic acid (7)

perfluoropentanoic acid (7)

perfluorotetradecanoic acid (7)

perfluorotridecanoic acid (7)

perfluoroundecanoic acid (7)

profenofos (18)

quinoline (18)

s-ethyl-dipropylthiocarbamate (EPTC) (15)

strontium (20)

tebuconazole (18)

terbacil (15)

Total Permethrin (18)

tribufos (18)

vanadium (20)

Sampling Facilities

Well 3-02
Ground Water (GW)

Well 3-02 TreatedEntry Point to the Distribution System (EP)

Well 2
Ground Water (GW)

EP #802 - Well 2 TreatedEntry Point to the Distribution System (EP)

Well 4
Ground Water (GW)

EP #803 - Well 4 TreatedEntry Point to the Distribution System (EP)

Well 6
Ground Water (GW)

EP #804 - Well 6 TreatedEntry Point to the Distribution System (EP)

Well 7
Ground Water (GW)

EP #805 - Well 7 TreatedEntry Point to the Distribution System (EP)

Well 5-2
Ground Water (GW)

EP #810 - Well 5-2 TreatedEntry Point to the Distribution System (EP)
Well 5-02Entry Point to the Distribution System (EP)

Well 1
Ground Water (GW)

EP #801 - Well 1 TreatedEntry Point to the Distribution System (EP)
Well 1Entry Point to the Distribution System (EP)

Well 8
Ground Water (GW)

EP #806 - Well 8 TreatedEntry Point to the Distribution System (EP)

Well 8A
Ground Water (GW)

EP #807 - Well 8A TreatedEntry Point to the Distribution System (EP)

5465 Mesa Rd
Ground Water (GW)

Max. Res. Time in Distr. System - 5465 Mesa Rd.Distribution System (DS)

2060 Rockrose Ct.
Ground Water (GW)

Max. Res. Time in Distr. System - 2060 Rockrose CtDistribution System (DS)

Distribution System
Ground Water (GW)

Max. Res. Time in Dist. SystemMaximum Residence Time (MR)

WELL 01
Ground Water (GW)

WELL 01 11S/04E-06B01SR (SR)

WELL 02
Ground Water (GW)

WELL 02 11S/04E-06D01SR (SR)

WELL 04
Ground Water (GW)

WELL 04 11S/04E-06P01SR (SR)

WELL 06
Ground Water (GW)

WELL 06 11S/04E-08C02SR (SR)

WELL 07
Ground Water (GW)

WELL 07 10S/04E-32N02SR (SR)

WELL 08
Ground Water (GW)

WELL 08 11S/04E-05C02SR (SR)

WELL 08A
Ground Water (GW)

WELL 08A 11S/04E-05C01SR (SR)

WELL 5-02
Ground Water (GW)

WELL 5-02Entry Point to the Distribution System (EP)

FAQ

Is City of Gilroy tap water safe to drink?

When was City of Gilroy last tested for water contamination?

The latest water samples were taken on December 17th, 2024.