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Tap water quality report

Tewksbury Hospital

EPA monitoring tested this supplier for 72 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
16
detected
2,500
people served
3
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
State government
Counties served
Middlesex

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
204
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 1999-06-01 → 1999-06-30
MR Monitoring Archived 2023-07-01 → 2023-09-30
MR Monitoring Archived 2022-10-01 → 2022-11-30
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2017-07-01
MR Monitoring Resolved 2016-06-01
MR Monitoring Resolved 2016-06-01
MR Monitoring Resolved 2013-10-01 → 2013-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2905 µg/L 29%
of the EPA limit 10000 µg/L
worst single sample: 4000 µg/L
80/80 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 32/32 LCR 2025
TTHM
60.225 µg/L 75%
of the EPA limit 80 µg/L
worst single sample: 60.5 µg/L
12/12 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
10.81 µg/L 18%
of the EPA limit 60 µg/L
worst single sample: 14 µg/L
12/12 SYR4 2012–2019
Nitrite
1395.5 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 1000 µg/L
worst single sample: 1770 µg/L
8/92 SYR4 2012–2019
Arsenic
9.095 µg/L 91%
of the EPA limit 10 µg/L
worst single sample: 9.2 µg/L
4/5 SYR4 2013–2019
Barium
41.7 µg/L 2.1%
of the EPA limit 2000 µg/L
worst single sample: 42 µg/L
4/5 SYR4 2013–2019
Cadmium
0.3110 µg/L 6.2%
of the EPA limit 5 µg/L
worst single sample: 0.3200 µg/L
4/5 SYR4 2013–2019
Copper
31.71 µg/L 2.4%
of the EPA limit 1300 µg/L
worst single sample: 35 µg/L
3/3 SYR4 2012–2013
Bromodichloromethane
22.9 µg/L
No EPA limit set
worst single sample: 23 µg/L
2/2 SYR4 2019
Bromoform
0.8720 µg/L
No EPA limit set
worst single sample: 0.8800 µg/L
2/2 SYR4 2019
Chloroform
21.95 µg/L
No EPA limit set
worst single sample: 22 µg/L
2/2 SYR4 2019
Dibromochloromethane
11.95 µg/L
No EPA limit set
worst single sample: 12 µg/L
2/2 SYR4 2019
Trichloroacetic Acid
5.6 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
2/2 SYR4 2019
Dibromoacetic Acid
0.5600 µg/L
No EPA limit set
 1/2 SYR4 2019
Dichloroacetic Acid
1.8 µg/L
No EPA limit set
 1/2 SYR4 2019
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BARTLEY LARKIN
Phone
9788517321
Email
[email protected]

Frequently asked questions about Tewksbury Hospital

Is Tewksbury Hospital tap water safe to drink?

EPA monitoring detected 16 contaminants in Tewksbury Hospital's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Tewksbury Hospital's water?

EPA monitoring detected Nitrate, Lead, TTHM, Total Haloacetic Acids (HAA5), Nitrite, and others. The full list with the level and data source for each is above.

How many people does Tewksbury Hospital serve?

Tewksbury Hospital reports serving 2,500 people in Massachusetts, per its EPA record.

Has Tewksbury Hospital had any water quality violations?

The EPA has 204 violations on file for Tewksbury Hospital, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.