Roslyn Water District (NY) Water Quality

Roslyn Water District is a large public water system in EPA region 2 that provides tap water for the 11576, 11577 zip codes. It has 19 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 1.39 µg/L. The maximum reported level of Manganese was 33.2 µg/L. There were 2 contamintants found in the Roslyn Water District water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (14)

1,2,3-trichloropropane (14)

1,3-butadiene (14)

1,4-dioxane (13)

1-butanol (16)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (16)

1H,1H,2H,2H-perfluorodecane sulfonic acid (16)

1H,1H,2H,2H-perfluorohexane sulfonic acid (16)

1H,1H,2H,2H-perfluorooctane sulfonic acid (16)

2,4-dinitrotoluene (16)

2,6-dinitrotoluene (16)

2-methoxyethanol (16)

2-propen-1-ol (Allyl Alcohol) (16)

4,4'-dichloro dichlorophenyl ethylene (DDE) (16)

4,8-dioxa-3H-perfluorononanoic acid (16)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (16)

alpha-hexachlorocyclohexane (16)

bromochloromethane (Halon 1011) (14)

bromomethane (14)

Butylated Hydroxyanisole (16)

chlorate (14)

chlorodifluoromethane (HCFC-22) (14)

chloromethane (14)

chlorpyrifos (16)

chromium (15)

chromium-6 (15)

cobalt (15)

dimethipin (16)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (17)

ethoprop (16)

Germanium (16)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (16)

lithium (16)

Manganese (16)

methyl-tertiary-butyl-ether (MTBE) (16)

molinate (16)

molybdenum (15)

N-ethyl perfluorooctanesulfonamidoacetic acid (16)

N-methyl perfluorooctanesulfonamidoacetic acid (16)

nitrobenzene (16)

nonafluoro-3,6-dioxaheptanoic acid (16)

o-toluidine (16)

oxyfluorfen (16)

perchlorate (15)

perfluoro(2-ethoxyethane)sulfonic acid (16)

perfluoro-3-methoxypropanoic acid (16)

perfluoro-4-methoxybutanoic acid (16)

perfluorobutanesulfonic acid (29)

perfluorobutanoic acid (16)

perfluorodecanoic acid (16)

perfluorododecanoic acid (16)

perfluoroheptanesulfonic acid (16)

perfluoroheptanoic acid (29)

perfluorohexanesulfonic acid (29)

perfluorohexanoic acid (16)

perfluorononanoic acid (29)

perfluorooctanesulfonic acid (29)

perfluorooctanoic acid (29)

perfluoropentanesulfonic acid (16)

perfluoropentanoic acid (16)

perfluorotetradecanoic acid (16)

perfluorotridecanoic acid (16)

perfluoroundecanoic acid (16)

profenofos (16)

quinoline (16)

s-ethyl-dipropylthiocarbamate (EPTC) (16)

strontium (15)

tebuconazole (16)

terbacil (16)

Total Permethrin (16)

tribufos (16)

vanadium (15)

Sampling Facilities

Well #1 GAC Plant
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #2 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #3 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #4 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #5 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #6 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #7 Treatment
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Well #8 GAC Plant
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Distribution System
Ground Water (GW)

LipaDistribution System (DS)
Mobil Mini MartDistribution System (DS)

Distribution System
Ground Water (GW)

Mobil Mini MartMaximum Residence Time (MR)

ROSLYN WATER DISTRICT
Ground Water (GW)

N 08010- WELL 8 EPN 08010Entry Point to the Distribution System (EP)

N 08010 - WELL 8
Ground Water (GW)

N 08010 - WELL 8 SRN08010SR (SR)

N 01870 - WELL 1
Ground Water (GW)

N 01870 - WELL 1 SRN01870SR (SR)

N 02400 - WELL 2
Ground Water (GW)

N 02400 - WELL 2 OO SRN02400SR (SR)

N 04265 - WELL 3
Ground Water (GW)

N 04265 - WELL 3 SRN04265SR (SR)

N 04623 - WELL 4
Ground Water (GW)

N 04623 - WELL 4 SRN04623SR (SR)

N 05852 - WELL 5
Ground Water (GW)

N 05852 - WELL 5 OO SRN05852SR (SR)

N 07104 - WELL 6
Ground Water (GW)

N 07104 - WELL 6 OO SRN07104Entry Point to the Distribution System (EP)

N 07873 - WELL 7
Ground Water (GW)

N 07873 - WELL 7 SRN07873SR (SR)

FAQ

Is Roslyn Water District tap water safe to drink?

When was Roslyn Water District last tested for water contamination?

The latest water samples were taken on June 25th, 2025.