City of La Verne Water Dept. (CA) Water Quality

City of La Verne Water Dept. is a large public water system in EPA region 9 that provides tap water for the 91750 zip codes. It has 18 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 20.55 µg/L. The maximum reported level of Manganese was 1.6 µg/L. There were 2 contamintants found in the City of La Verne Water Dept. water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (8)

1,2,3-trichloropropane (8)

1,3-butadiene (8)

1,4-dioxane (8)

1-butanol (14)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (10)

1H,1H,2H,2H-perfluorodecane sulfonic acid (10)

1H,1H,2H,2H-perfluorohexane sulfonic acid (10)

1H,1H,2H,2H-perfluorooctane sulfonic acid (10)

2,4-dinitrotoluene (10)

2,6-dinitrotoluene (10)

2-methoxyethanol (14)

2-propen-1-ol (Allyl Alcohol) (14)

4,4'-dichloro dichlorophenyl ethylene (DDE) (10)

4,8-dioxa-3H-perfluorononanoic acid (10)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (10)

alpha-hexachlorocyclohexane (14)

anatoxin-a (24)

bromochloromethane (Halon 1011) (8)

bromomethane (8)

Butylated Hydroxyanisole (14)

chlorate (16)

chlorodifluoromethane (HCFC-22) (8)

chloromethane (8)

chlorpyrifos (14)

chromium (16)

chromium-6 (15)

cobalt (16)

cylindrospermopsin (24)

dimethipin (14)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (10)

ethoprop (14)

Germanium (14)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (10)

lithium (11)

Manganese (14)

methyl-tertiary-butyl-ether (MTBE) (10)

molinate (10)

molybdenum (16)

N-ethyl perfluorooctanesulfonamidoacetic acid (10)

N-methyl perfluorooctanesulfonamidoacetic acid (10)

nitrobenzene (10)

nonafluoro-3,6-dioxaheptanoic acid (10)

o-toluidine (14)

oxyfluorfen (14)

perchlorate (6)

perfluoro(2-ethoxyethane)sulfonic acid (10)

perfluoro-3-methoxypropanoic acid (10)

perfluoro-4-methoxybutanoic acid (10)

perfluorobutanesulfonic acid (16)

perfluorobutanoic acid (10)

perfluorodecanoic acid (10)

perfluorododecanoic acid (10)

perfluoroheptanesulfonic acid (10)

perfluoroheptanoic acid (16)

perfluorohexanesulfonic acid (16)

perfluorohexanoic acid (10)

perfluorononanoic acid (16)

perfluorooctanesulfonic acid (16)

perfluorooctanoic acid (16)

perfluoropentanesulfonic acid (10)

perfluoropentanoic acid (10)

perfluorotetradecanoic acid (10)

perfluorotridecanoic acid (10)

perfluoroundecanoic acid (10)

profenofos (14)

quinoline (14)

s-ethyl-dipropylthiocarbamate (EPTC) (10)

strontium (16)

tebuconazole (14)

terbacil (10)

total microcystins (24)

Total Permethrin (14)

tribufos (14)

vanadium (16)

Sampling Facilities

Zone 1 Blend
Multiple Sources (MX)

EP #26 - Zone 1 Blend EPEntry Point to the Distribution System (EP)

Baldy Blend
Multiple Sources (MX)

EP #28 - Baldy Blend EPEntry Point to the Distribution System (EP)

Amherst Treatment Plant
Ground Water (GW)

EP from TP #4Entry Point to the Distribution System (EP)

TVMWD connection # 2
Surface Water (SW)

EP from TVMWD - connection # 2Entry Point to the Distribution System (EP)

2620 First St
Multiple Sources (MX)

HAA monitoring from DS005Distribution System (DS)

3406 Damien Ave
Multiple Sources (MX)

HAA monitoring from DS006Distribution System (DS)

6795 Country Club Dr
Multiple Sources (MX)

HAA monitoring from DS007Distribution System (DS)

6818 Starline
Multiple Sources (MX)

HAA monitoring from DS008Distribution System (DS)

System Blend
Multiple Sources (MX)

EP #27 - Plateau EPEntry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

DSMRT for System BlendMaximum Residence Time (MR)
DSMRT for Zone 1 BlendMaximum Residence Time (MR)

EP- #027 SYSTEM BLEND - NO3 BEFORE RESVR PLATEAU
Ground Water (GW)

system blend - plateau EPEntry Point to the Distribution System (EP)

EP- #026 ZONE 1 BLEND - NO3 & TCE @ 6TH & WHITE
Ground Water (GW)

Zone 1 blend EPEntry Point to the Distribution System (EP)

EP- #040 WALNUT WELL - CHLORINATION
Ground Water (GW)

Walnut Well EPEntry Point to the Distribution System (EP)

LA VERNE HEIGHTS WELL 03
Ground Water (GW)

LA VERNE HEIGHTS WE 01S/08W-05E01Entry Point to the Distribution System (EP)

LINCOLN
Ground Water (GW)

LINCOLN 01S/08W-07F06Entry Point to the Distribution System (EP)

MILLS TRACT
Ground Water (GW)

MILLS TRACT 01S/08W-07F02Entry Point to the Distribution System (EP)

OLD BALDY
Ground Water (GW)

OLD BALDY 01S/09W-12H01Entry Point to the Distribution System (EP)

AMHERST WELL
Ground Water (GW)

AMHERST WELL 01S/08W-06H06Entry Point to the Distribution System (EP)

FAQ

Is City of La Verne Water Dept. tap water safe to drink?

When was City of La Verne Water Dept. last tested for water contamination?

The latest water samples were taken on May 20th, 2025.