Twentynine Palms Water District (CA) Water Quality

Twentynine Palms Water District is a large public water system in EPA region 9 that provides tap water for the 92277 zip codes. It has 28 facilities where the water supply was tested for 94 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.73 µg/L. The maximum reported level of Manganese was 3.1 µg/L. There were 2 contamintants found in the Twentynine Palms Water District water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (16)

1,2,3-trichloropropane (16)

1,2-diphenylhydrazine (18)

1,3-butadiene (16)

1,4-dioxane (16)

1-butanol (12)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (14)

17-alpha-ethynylestradiol (16)

17-beta-estradiol (16)

1H,1H,2H,2H-perfluorodecane sulfonic acid (14)

1H,1H,2H,2H-perfluorohexane sulfonic acid (14)

1H,1H,2H,2H-perfluorooctane sulfonic acid (14)

2,4,6-trichlorophenol (9)

2,4-dichlorophenol (9)

2,4-dinitrophenol (9)

2,4-dinitrotoluene (24)

2,6-dinitrotoluene (24)

2-methoxyethanol (12)

2-methyl-phenol (9)

2-propen-1-ol (Allyl Alcohol) (12)

4,4'-dichloro dichlorophenyl ethylene (DDE) (24)

4,8-dioxa-3H-perfluorononanoic acid (14)

4-androstene-3,17-dione (16)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (14)

alpha-hexachlorocyclohexane (12)

bromochloromethane (Halon 1011) (16)

bromomethane (16)

Butylated Hydroxyanisole (12)

chlorate (30)

chlorodifluoromethane (HCFC-22) (16)

chloromethane (16)

chlorpyrifos (12)

chromium (30)

chromium-6 (30)

cobalt (30)

diazinon (18)

dimethipin (12)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (24)

diuron (18)

equilin (16)

estriol (16)

estrone (16)

ethoprop (12)

fonofos (18)

Germanium (12)

HAA5 (five regulated haloacetic acids) (8)

HAA6Br (six brominated haloacetic acids) (8)

HAA9 (nine haloacetic acids) (8)

hexafluoropropylene oxide dimer acid (GenX) (14)

linuron (18)

lithium (14)

Manganese (12)

methyl-tertiary-butyl-ether (MTBE) (24)

molinate (24)

molybdenum (30)

N-ethyl perfluorooctanesulfonamidoacetic acid (14)

N-methyl perfluorooctanesulfonamidoacetic acid (14)

nitrobenzene (18)

nitrobenzene (24)

nonafluoro-3,6-dioxaheptanoic acid (14)

o-toluidine (12)

oxyfluorfen (12)

perchlorate (24)

perfluoro(2-ethoxyethane)sulfonic acid (14)

perfluoro-3-methoxypropanoic acid (14)

perfluoro-4-methoxybutanoic acid (14)

perfluorobutanesulfonic acid (30)

perfluorobutanoic acid (14)

perfluorodecanoic acid (14)

perfluorododecanoic acid (14)

perfluoroheptanesulfonic acid (14)

perfluoroheptanoic acid (30)

perfluorohexanesulfonic acid (30)

perfluorohexanoic acid (14)

perfluorononanoic acid (30)

perfluorooctanesulfonic acid (30)

perfluorooctanoic acid (30)

perfluoropentanesulfonic acid (14)

perfluoropentanoic acid (14)

perfluorotetradecanoic acid (14)

perfluorotridecanoic acid (14)

perfluoroundecanoic acid (14)

profenofos (12)

prometon (18)

quinoline (12)

s-ethyl-dipropylthiocarbamate (EPTC) (24)

strontium (30)

tebuconazole (12)

terbacil (24)

terbufos (18)

testosterone (16)

Total Permethrin (12)

tribufos (12)

vanadium (30)

Sampling Facilities

Well 12
Ground Water (GW)

Well 12 Entry PointEntry Point to the Distribution System (EP)
WELL 12 01N/08E-33A05SR (SR)

Well 15
Ground Water (GW)

Well 15 Entry PointEntry Point to the Distribution System (EP)

Well 16
Ground Water (GW)

Well 16 Entry PointEntry Point to the Distribution System (EP)
WELL 16 3610049-015SR (SR)

Well 14
Ground Water (GW)

Well 14 Entry PointEntry Point to the Distribution System (EP)
WELL 14 01N/08E-36G01SR (SR)

Well 17
Ground Water (GW)

Well 17 Entry PointEntry Point to the Distribution System (EP)
WELL 11 01N/08E-30N01SR (SR)

Well 11-B
Ground Water (GW)

Well 11-B Entry PointEntry Point to the Distribution System (EP)
WELL 16 3610049-015SR (SR)

Well WTP-1
Ground Water (GW)

EP #19-Well WTP-1 TreatedEntry Point to the Distribution System (EP)
EP #19: Well WTP-1 TreatedEntry Point to the Distribution System (EP)
add ucmr sp nameEntry Point to the Distribution System (EP)

Goodie Lane & Encelia Ave
Ground Water (GW)

Goodie Ln & Encelia AveDistribution System (DS)
DSMRT for Well 4Maximum Residence Time (MR)
DSMRT for Well 11Maximum Residence Time (MR)
DSMRT for Well 15Maximum Residence Time (MR)
DSMRT for Well 16Maximum Residence Time (MR)
DSMRT for Well 14Maximum Residence Time (MR)
DSMRT for Wells 6, 9 & 12Maximum Residence Time (MR)
DSMRT for Well WTP-1Maximum Residence Time (MR)

Adobe Rd & Howard Ln
Ground Water (GW)

Adobe Rd & Howard LnDistribution System (DS)

Adobe Rd & Indian Trail
Ground Water (GW)

Adobe Rd & Indian TrailDistribution System (DS)

Baseline Rd & Robin Rd
Ground Water (GW)

Baseline Rd & Robin RdDistribution System (DS)

Well 4
Ground Water (GW)

Well 4 Entry PointEntry Point to the Distribution System (EP)
WELL 04 01N/09E-31C01SR (SR)

Well 11
Ground Water (GW)

Well 11 Entry PointEntry Point to the Distribution System (EP)
WELL 11 01N/08E-30N01SR (SR)

Combined Wells 6, 9 & 12
Ground Water (GW)

Blended Wells 6, 9 & 12 EPEntry Point to the Distribution System (EP)
Blended Wells 6, 9 & 12 EPEntry Point to the Distribution System (EP)
BLENDED W6W7W9W12SR (SR)

WELL 06
Ground Water (GW)

WELL 06 01N/08E-33A02SR (SR)

WELL 07
Ground Water (GW)

WELL 07 01N/08E-33A03SR (SR)

WELL 09
Ground Water (GW)

WELL 09 01N/08E-33A04SR (SR)

WELL 10
Ground Water (GW)

WELL 10 01N/08E-30J02SR (SR)

WELL 13
Ground Water (GW)

WELL 13 01N/08E-36H01SR (SR)

WELL 03B
Ground Water (GW)

WELL 03B 3610049-017SR (SR)

WTP-1
Ground Water (GW)

WTP-1 01N/09E-21A01SR (SR)

WELL 4
Ground Water (GW)

WELL 4 01N/09E-31C01SR (SR)

WELL 10
Ground Water (GW)

WELL 10 01N/08E-30J02SR (SR)

WELL 13
Ground Water (GW)

WELL 13 01N/08E-36H01SR (SR)

WELL 14
Ground Water (GW)

WELL 14 01N/08E-36G01SR (SR)

WELL 3B
Ground Water (GW)

WELL 3B 3610049-017SR (SR)

WELL TP1
Ground Water (GW)

WELL TP-1 01N/09E-21A01SR (SR)

WELL WTP-1
Ground Water (GW)

WELL TP-1 01N/09E-21A01SR (SR)

FAQ

Is Twentynine Palms Water District tap water safe to drink?

When was Twentynine Palms Water District last tested for water contamination?

The latest water samples were taken on April 14th, 2025.