Mayaguez (PR) Water Quality

Mayaguez is a large public water system in EPA region 2 that provides tap water for the 00680 zip codes. It has 40 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 83.76 µg/L. Some (1 of 42 or 2%) of the latest water samples showed levels of HAA5 (five regulated haloacetic acids) that were at or above unsafe concentration levels. The maximum reported level of Manganese was 176.31 µg/L. There were 2 contamintants found in the Mayaguez water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.

Contaminants

1,1-dichloroethane (52)

1,2,3-trichloropropane (52)

1,3-butadiene (52)

1,4-dioxane (52)

1-butanol (28)

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

17-alpha-ethynylestradiol (46)

17-beta-estradiol (46)

1H,1H,2H,2H-perfluorodecane sulfonic acid (11)

1H,1H,2H,2H-perfluorohexane sulfonic acid (11)

1H,1H,2H,2H-perfluorooctane sulfonic acid (11)

2,4-dinitrotoluene (8)

2,6-dinitrotoluene (8)

2-methoxyethanol (28)

2-propen-1-ol (Allyl Alcohol) (28)

4,4'-dichloro dichlorophenyl ethylene (DDE) (8)

4,8-dioxa-3H-perfluorononanoic acid (11)

4-androstene-3,17-dione (46)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (11)

alpha-hexachlorocyclohexane (28)

anatoxin-a (13)

bromochloromethane (Halon 1011) (52)

bromomethane (52)

Butylated Hydroxyanisole (28)

chlorate (61)

chlorodifluoromethane (HCFC-22) (52)

chloromethane (52)

chlorpyrifos (17)

chromium (54)

chromium-6 (51)

cobalt (59)

cylindrospermopsin (13)

dimethipin (28)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (8)

equilin (46)

estriol (46)

estrone (46)

ethoprop (17)

Germanium (27)

HAA5 (five regulated haloacetic acids) (42)

HAA6Br (six brominated haloacetic acids) (42)

HAA9 (nine haloacetic acids) (42)

hexafluoropropylene oxide dimer acid (GenX) (11)

lithium (11)

Manganese (27)

methyl-tertiary-butyl-ether (MTBE) (8)

molinate (8)

molybdenum (59)

N-ethyl perfluorooctanesulfonamidoacetic acid (11)

N-methyl perfluorooctanesulfonamidoacetic acid (11)

nitrobenzene (8)

nonafluoro-3,6-dioxaheptanoic acid (11)

o-toluidine (22)

oxyfluorfen (28)

perchlorate (7)

perfluoro(2-ethoxyethane)sulfonic acid (11)

perfluoro-3-methoxypropanoic acid (11)

perfluoro-4-methoxybutanoic acid (11)

perfluorobutanesulfonic acid (60)

perfluorobutanoic acid (11)

perfluorodecanoic acid (11)

perfluorododecanoic acid (11)

perfluoroheptanesulfonic acid (11)

perfluoroheptanoic acid (60)

perfluorohexanesulfonic acid (60)

perfluorohexanoic acid (11)

perfluorononanoic acid (60)

perfluorooctanesulfonic acid (60)

perfluorooctanoic acid (60)

perfluoropentanesulfonic acid (11)

perfluoropentanoic acid (11)

perfluorotetradecanoic acid (11)

perfluorotridecanoic acid (11)

perfluoroundecanoic acid (11)

profenofos (28)

quinoline (28)

s-ethyl-dipropylthiocarbamate (EPTC) (8)

strontium (53)

tebuconazole (28)

terbacil (8)

testosterone (46)

total microcystins (15)

Total Permethrin (17)

tribufos (28)

vanadium (59)

Sampling Facilities

PF MIRADERO
Surface Water (SW)

PF MIRADEROEntry Point to the Distribution System (EP)

PZ CABO ROJO I
Ground Water (GW)

PZ CABO ROJO IEntry Point to the Distribution System (EP)

PZ MARINI I
Ground Water (GW)

PZ MARINI IEntry Point to the Distribution System (EP)

PZ BATEYES
Ground Water (GW)

PZ BATEYESEntry Point to the Distribution System (EP)

PZ CABO ROJO III
Ground Water (GW)

PZ CABO ROJO IIIEntry Point to the Distribution System (EP)

PZ CABO ROJO II
Ground Water (GW)

PZ CABO ROJO IIEntry Point to the Distribution System (EP)

PF A+�ASCO
Surface Water (SW)

PF A+ASCOEntry Point to the Distribution System (EP)

PZ HACIENDA LA MARGARITA
Ground Water (GW)

PZ HACIENDA LA MARGARITAEntry Point to the Distribution System (EP)

PZ CALVACHE I
Ground Water (GW)

PZ CALVACHE IEntry Point to the Distribution System (EP)

PZ CALVACHE Ii
Ground Water (GW)

PZ CALVACHE IIEntry Point to the Distribution System (EP)

PZ REMANSO
Ground Water (GW)

PZ REMANSOEntry Point to the Distribution System (EP)

PZ CLUB DE LEONES
Ground Water (GW)

PZ CLUB DE LEONESEntry Point to the Distribution System (EP)

PZ MARINI II
Ground Water (GW)

PZ MARINI IIEntry Point to the Distribution System (EP)

PF AÑASCO-SALIDA
Surface Water (SW)

PF AÑASCO-SALIDADistribution System (DS)

AEROPUERTO EL MANI
Surface Water (SW)

AEROPUERTO EL MANIDistribution System (DS)

ZOOLOGICO MAYAGUEZ
Surface Water (SW)

ZOOLOGICO MAYAGUEZDistribution System (DS)

FAM. COLON SANCHEZ (ISRAEL)
Surface Water (SW)

FAM. COLON SANCHEZ (ISRAEL)Distribution System (DS)

TA CORCOVADA II
Surface Water (SW)

TA CORCOVADA IIDistribution System (DS)

FAM. MARTIR RODRIGUEZ (AMPARO)
Surface Water (SW)

FAM. MARTIR RODRIGUEZ (AMPARO)Distribution System (DS)

FAM. RUIZ (MYRNA)
Surface Water (SW)

FAM. RUIZ (MYRNA)Distribution System (DS)

LECHONERA LA CATUMBA
Surface Water (SW)

LECHONERA LA CATUMBADistribution System (DS)

FAM. SEDA (NANCY)
Surface Water (SW)

FAM. SEDA (NANCY)Distribution System (DS)

FAM. GOMEZ (YANERIS)
Surface Water (SW)

FAM. GOMEZ (YANERIS)Distribution System (DS)

Distribution System
Multiple Sources (MX)

Fam. Valentin Rodriguez VelazquezDistribution System (DS)

Cabo Rojo III
Surface Water (SW)

Cabo Rojo III POEEntry Point to the Distribution System (EP)

Cabo Rojo II (Bajuras)
Surface Water (SW)

Cabo Rojo II POEEntry Point to the Distribution System (EP)

Cabo Rojo I
Surface Water (SW)

Cabo Rojo I POEEntry Point to the Distribution System (EP)

Hacienda la Margarita
Surface Water (SW)

Hacienda la Margarita POEEntry Point to the Distribution System (EP)

Ponce de Leon
Surface Water (SW)

TanqueEntry Point to the Distribution System (EP)

La Monserrate
Surface Water (SW)

La Monserrate POEEntry Point to the Distribution System (EP)

Distribution System
Surface Water (SW)

Tanque Corcovada IIMaximum Residence Time (MR)
Casa Capitulo UiaMaximum Residence Time (MR)
Aeropuerto el ManiMaximum Residence Time (MR)

MAYAGUEZ-MIRADERO
Surface Water (SW)

MAYAGUEZ-MIRADEROEntry Point to the Distribution System (EP)

MAYAGUEZ PLT.VIEJA
Surface Water (SW)

MAYAGUEZ PLT.VIEJAEntry Point to the Distribution System (EP)

HORMIGUERO 2
Surface Water (SW)

HORMIGUERO 2Entry Point to the Distribution System (EP)

HORMIGUERO 3 (JAVIERES)
Surface Water (SW)

HORMIGUERO 3 (JAVIERES)Entry Point to the Distribution System (EP)

LA MONSERRATE
Surface Water (SW)

LA MONSERRATEEntry Point to the Distribution System (EP)

MARINI 1
Surface Water (SW)

MARINI 1Entry Point to the Distribution System (EP)

MARINI 2
Surface Water (SW)

MARINI 2Entry Point to the Distribution System (EP)

BATEYES
Surface Water (SW)

BATEYESEntry Point to the Distribution System (EP)

Distribution System
Surface Water (SW)

MAXRES2Maximum Residence Time (MR)
MAXRES3Maximum Residence Time (MR)
MAXRES4Maximum Residence Time (MR)
MAXRES5Maximum Residence Time (MR)
MAXRES6Maximum Residence Time (MR)
MAXRES7Maximum Residence Time (MR)
MAXRES8Maximum Residence Time (MR)
MAXRES9Maximum Residence Time (MR)

FAQ

Is Mayaguez tap water safe to drink?

When was Mayaguez last tested for water contamination?

The latest water samples were taken on March 19th, 2025.