Portsmouth Waterworks (NH) Water Quality

Portsmouth Waterworks is a large public water system in EPA region 1 that provides tap water for the 03801, 03840, 03870 zip codes. It has 23 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 56.92 µg/L. The maximum reported level of Manganese was 211 µg/L. There were 2 contamintants found in the Portsmouth Waterworks water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (6)

1,2,3-trichloropropane (6)

1,3-butadiene (6)

1,4-dioxane (6)

1-butanol (8)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (18)

1H,1H,2H,2H-perfluorodecane sulfonic acid (18)

1H,1H,2H,2H-perfluorohexane sulfonic acid (18)

1H,1H,2H,2H-perfluorooctane sulfonic acid (18)

2,4-dinitrotoluene (18)

2,6-dinitrotoluene (18)

2-methoxyethanol (8)

2-propen-1-ol (Allyl Alcohol) (8)

4,4'-dichloro dichlorophenyl ethylene (DDE) (18)

4,8-dioxa-3H-perfluorononanoic acid (18)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (18)

alpha-hexachlorocyclohexane (12)

anatoxin-a (8)

bromochloromethane (Halon 1011) (6)

bromomethane (6)

Butylated Hydroxyanisole (12)

chlorate (11)

chlorodifluoromethane (HCFC-22) (6)

chloromethane (6)

chlorpyrifos (12)

chromium (18)

chromium-6 (18)

cobalt (18)

cylindrospermopsin (8)

dimethipin (12)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (18)

ethoprop (12)

Germanium (12)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (18)

lithium (18)

Manganese (12)

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

molinate (18)

molybdenum (18)

N-ethyl perfluorooctanesulfonamidoacetic acid (18)

N-methyl perfluorooctanesulfonamidoacetic acid (18)

nitrobenzene (18)

nonafluoro-3,6-dioxaheptanoic acid (18)

o-toluidine (12)

oxyfluorfen (12)

perchlorate (16)

perfluoro(2-ethoxyethane)sulfonic acid (18)

perfluoro-3-methoxypropanoic acid (18)

perfluoro-4-methoxybutanoic acid (18)

perfluorobutanesulfonic acid (28)

perfluorobutanoic acid (18)

perfluorodecanoic acid (18)

perfluorododecanoic acid (18)

perfluoroheptanesulfonic acid (18)

perfluoroheptanoic acid (28)

perfluorohexanesulfonic acid (28)

perfluorohexanoic acid (18)

perfluorononanoic acid (28)

perfluorooctanesulfonic acid (28)

perfluorooctanoic acid (28)

perfluoropentanesulfonic acid (18)

perfluoropentanoic acid (18)

perfluorotetradecanoic acid (18)

perfluorotridecanoic acid (18)

perfluoroundecanoic acid (18)

profenofos (12)

quinoline (12)

s-ethyl-dipropylthiocarbamate (EPTC) (18)

strontium (18)

tebuconazole (12)

terbacil (18)

total microcystins (6)

Total Permethrin (12)

tribufos (12)

vanadium (18)

Sampling Facilities

Portsmouth GPW #1 Treatment Site
Ground Water (GW)

Portsmouth GPW 004 EPEntry Point to the Distribution System (EP)

Collins Well Treatment Site
Ground Water (GW)

Collins GPW 010 EPEntry Point to the Distribution System (EP)

Greenland Well
Ground Water (GW)

Greenland GPW 6-012 EPEntry Point to the Distribution System (EP)

Madbury Well 4R
Ground Water (GW)

Madbury Well 4R-011 EPEntry Point to the Distribution System (EP)

Madbury Well 5
Ground Water (GW)

Madbury GPW 5-013 EPEntry Point to the Distribution System (EP)

Madbury Water Treatment Plant
Surface Water (SW)

Finished Water 009-001Entry Point to the Distribution System (EP)

Madbury Well 2
Ground Water (GW)

Madbury GPW 2-006 EPEntry Point to the Distribution System (EP)

Madbury Well 3
Ground Water (GW)

Madbury GPW 3-007 EPEntry Point to the Distribution System (EP)

Treatment Plant
Surface Water (SW)

Finished Water Sample @ Madbury BlendEntry Point to the Distribution System (EP)

Pease Tradeport
Ground Water (GW)

Pease Entry PointEntry Point to the Distribution System (EP)

30 SPINNAKER WAY
Multiple Sources (MX)

30 SPINNAKER WAYDistribution System (DS)

120 SPAULDING TRNPKE
Multiple Sources (MX)

120 SPAULDING TRNPKEDistribution System (DS)

WATER STREET
Multiple Sources (MX)

WATER STREETDistribution System (DS)

1550 WOODBURY PLAZA
Multiple Sources (MX)

1550 WOODBURY PLAZADistribution System (DS)

Greenland GPW #6 (12) Treatment Site
Ground Water (GW)

Greenland GPW #6 (516) (12) EPTDSEntry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

DSMRT for Treatment PlantMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for GreenlandMaximum Residence Time (MR)
DSMRT for Portsmouth/CollinsMaximum Residence Time (MR)

MADBURY GPW #2
Ground Water (GW)

MADBURY GPW #2Entry Point to the Distribution System (EP)

MADBURY GPW #3
Ground Water (GW)

MADBURY GPW #3Entry Point to the Distribution System (EP)

MADBURY GPW #4
Ground Water (GW)

MADBURY GPW #4Entry Point to the Distribution System (EP)

MADBURY GPW 2
Ground Water (GW)

MADBURY GPW 2SR (SR)

MADBURY GPW 3
Ground Water (GW)

MADBURY GPW 3SR (SR)

MADBURY GPW 4
Ground Water (GW)

MADBURY GPW 4SR (SR)

FAQ

Is Portsmouth Waterworks tap water safe to drink?

When was Portsmouth Waterworks last tested for water contamination?

The latest water samples were taken on May 10th, 2024.