Riverhead Water District (NY) Water Quality

Riverhead Water District is a large public water system in EPA region 2 that provides tap water for the 11792, 11931, 11947 zip codes. It has 25 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.

The maximum reported level of alpha-hexachlorocyclohexane was 0.16 µg/L. Some (1 of 22 or 5%) of the latest water samples showed levels of alpha-hexachlorocyclohexane that were at or above unsafe concentration levels. The maximum reported level of HAA5 (five regulated haloacetic acids) was 6.54 µg/L. The maximum reported level of Manganese was 160 µg/L. There were 3 contamintants found in the Riverhead Water District 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 (22)

1,2,3-trichloropropane (22)

1,3-butadiene (22)

1,4-dioxane (22)

1-butanol (22)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (20)

1H,1H,2H,2H-perfluorodecane sulfonic acid (20)

1H,1H,2H,2H-perfluorohexane sulfonic acid (20)

1H,1H,2H,2H-perfluorooctane sulfonic acid (20)

2,4-dinitrotoluene (22)

2,6-dinitrotoluene (22)

2-methoxyethanol (22)

2-propen-1-ol (Allyl Alcohol) (22)

4,4'-dichloro dichlorophenyl ethylene (DDE) (22)

4,8-dioxa-3H-perfluorononanoic acid (20)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (20)

alpha-hexachlorocyclohexane (22)

bromochloromethane (Halon 1011) (22)

bromomethane (22)

Butylated Hydroxyanisole (22)

chlorate (24)

chlorodifluoromethane (HCFC-22) (22)

chloromethane (22)

chlorpyrifos (22)

chromium (24)

chromium-6 (24)

cobalt (24)

dimethipin (22)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (22)

ethoprop (22)

Germanium (22)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (20)

lithium (20)

Manganese (22)

methyl-tertiary-butyl-ether (MTBE) (22)

molinate (22)

molybdenum (24)

N-ethyl perfluorooctanesulfonamidoacetic acid (20)

N-methyl perfluorooctanesulfonamidoacetic acid (20)

nitrobenzene (22)

nonafluoro-3,6-dioxaheptanoic acid (20)

o-toluidine (22)

oxyfluorfen (22)

perchlorate (20)

perfluoro(2-ethoxyethane)sulfonic acid (20)

perfluoro-3-methoxypropanoic acid (20)

perfluoro-4-methoxybutanoic acid (20)

perfluorobutanesulfonic acid (42)

perfluorobutanoic acid (20)

perfluorodecanoic acid (20)

perfluorododecanoic acid (20)

perfluoroheptanesulfonic acid (20)

perfluoroheptanoic acid (42)

perfluorohexanesulfonic acid (42)

perfluorohexanoic acid (20)

perfluorononanoic acid (42)

perfluorooctanesulfonic acid (42)

perfluorooctanoic acid (42)

perfluoropentanesulfonic acid (20)

perfluoropentanoic acid (20)

perfluorotetradecanoic acid (20)

perfluorotridecanoic acid (20)

perfluoroundecanoic acid (20)

profenofos (22)

quinoline (22)

s-ethyl-dipropylthiocarbamate (EPTC) (22)

strontium (24)

tebuconazole (22)

terbacil (22)

Total Permethrin (22)

tribufos (22)

vanadium (24)

Sampling Facilities

Well 2
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 1A
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 16-1 TP
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 15-1, 15-2 & 15-3 Treatment TP Plant
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well17-1 TP
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 3A
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 11-1 & 11-2 TP
Ground Water (GW)

After TreatmentEntry Point to the Distribution System (EP)

Well 7-2 & 7-3 TP
Ground Water (GW)

After TreatmentEntry Point to the Distribution System (EP)

Well 4-1 & 4-2 TP
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

Well 5-1 & 5-2 TP
Ground Water (GW)

Treated TapEntry Point to the Distribution System (EP)

High Zone Distribution
Ground Water (GW)

wading river f.d substationDistribution System (DS)

Low Zone Distribution
Ground Water (GW)

jamesport fire deptDistribution System (DS)

Well 12-1 Grumman TP
Ground Water (GW)

After TreatmentEntry Point to the Distribution System (EP)

Distribution System
Ground Water (GW)

JAMESPORT C. C., 446 SOUTH JAMESPORT AVE.,11947Maximum Residence Time (MR)

WELL 5-1 S-66685 275
Ground Water (GW)

WELL 5-1 S-66685 27 SRS66685SR (SR)

WELL 5-2 S-88466 492
Ground Water (GW)

WELL 5-2 S-88466 49 SRS88466SR (SR)

WELL 1A S-108348 250
Ground Water (GW)

WELL 1A S-108348 25 SRS108348SR (SR)

WELL 7-3 S-10543
Ground Water (GW)

WELL 7-3 S-105439 SRS10543SR (SR)

WELL #4-2 392 S-34732
Ground Water (GW)

WELL #4-2 392% S-34 SRS34732SR (SR)

WELL # 4-1 721 S-30271
Ground Water (GW)

WELL # 4-1 721% S- SRS30271SR (SR)

WELL #2 S-7261 139
Ground Water (GW)

WELL #2 S-07261 139 SRS7261SR (SR)

WELL 12-1 S-49605
Ground Water (GW)

WELL 12-1 S-49605SR (SR)

WELL 12-2 S-35110
Ground Water (GW)

WELL 12-2 S-35110SR (SR)

WELL # 3A S-111777
Ground Water (GW)

WELL # 3A S-111777 SRS111777SR (SR)

WELL #7-2 S-89133
Ground Water (GW)

WELL #7-2 S-89133 SRS89133SR (SR)

FAQ

Is Riverhead Water District tap water safe to drink?

When was Riverhead Water District last tested for water contamination?

The latest water samples were taken on May 3rd, 2024.