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Tap water quality report

Littleton Water Department

EPA monitoring tested this supplier for 104 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
16
detected
9,307
people served
23
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local 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.

23
health-based violations
43
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2009-10-01 → 2009-10-31
MCL Health-based Resolved 2009-10-01 → 2009-10-31
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Resolved 2009-06-01 → 2009-06-30
MCL Health-based Resolved 2009-06-01 → 2009-06-30
MCL Health-based Resolved 2009-06-01 → 2009-06-30
MCL Health-based Resolved 2009-06-01 → 2009-06-30

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
1200 µg/L 12%
of the EPA limit 10000 µg/L
worst single sample: 1600 µg/L
104/104 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 26/26 LCR 2025
Arsenic
10.25 µg/L 102%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 11 µg/L
16/32 SYR4 2012–2019
Copper
33.85 µg/L 2.6%
of the EPA limit 1300 µg/L
worst single sample: 37 µg/L
10/10 SYR4 2014–2018
Barium
82.6 µg/L 4.1%
of the EPA limit 2000 µg/L
worst single sample: 91 µg/L
9/9 SYR4 2014–2018
Bromodichloromethane
6.832 µg/L
No EPA limit set
worst single sample: 7.66 µg/L
7/7 SYR4 2014–2019
Bromoform
4.639 µg/L
No EPA limit set
worst single sample: 4.78 µg/L
7/7 SYR4 2014–2019
Chloroform
3.474 µg/L
No EPA limit set
worst single sample: 3.84 µg/L
7/7 SYR4 2014–2019
Dibromochloromethane
10.626 µg/L
No EPA limit set
worst single sample: 11.7 µg/L
7/7 SYR4 2014–2019
TTHM
25.6 µg/L 32%
of the EPA limit 80 µg/L
worst single sample: 28 µg/L
7/7 SYR4 2014–2019
Tetrachloroethylene
0.9400 µg/L 19%
of the EPA limit 5 µg/L
worst single sample: 1 µg/L
7/74 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
2.058 µg/L 3.4%
of the EPA limit 60 µg/L
worst single sample: 2.13 µg/L
3/7 SYR4 2014–2019
Dibromoacetic Acid
1.0695 µg/L
No EPA limit set
worst single sample: 1.07 µg/L
2/7 SYR4 2014–2019
Bromate
1 µg/L 10%
of the EPA limit 10 µg/L
 1/29 SYR4 2012–2019
Dichloroacetic Acid
1.07 µg/L
No EPA limit set
 1/7 SYR4 2014–2019
Monobromoacetic Acid
1.41 µg/L
No EPA limit set
 1/7 SYR4 2014–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MATTHEW SILVERMAN
Phone
9785402222
Email
[email protected]

Frequently asked questions about Littleton Water Department

Is Littleton Water Department tap water safe to drink?

EPA monitoring detected 16 contaminants in Littleton Water Department'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 Littleton Water Department's water?

EPA monitoring detected Nitrate, Lead, Arsenic, Copper, Barium, and others. The full list with the level and data source for each is above.

How many people does Littleton Water Department serve?

Littleton Water Department reports serving 9,307 people in Massachusetts, per its EPA record.

Has Littleton Water Department had any water quality violations?

The EPA has 43 violations on file for Littleton Water Department, of which 23 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.