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Tap water quality report

Littleton Water and Light

EPA monitoring tested this supplier for 106 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

106
contaminants tested
15
detected
6,500
people served
56
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Surface water
Ownership
Local government
Counties served
Grafton

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.

56
health-based violations
181
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2006-01-01 → 2006-03-31
MCL Health-based Resolved 2006-01-01 → 2006-03-31
MCL Health-based Resolved 2006-01-01 → 2006-03-31
MCL Health-based Resolved 2006-01-01 → 2006-03-31
MCL Health-based Resolved 2002-10-01 → 2002-10-31
MCL Health-based Resolved 2002-10-01 → 2002-10-31
MCL Health-based Resolved 2002-10-01 → 2002-10-31
MCL Health-based Resolved 2002-10-01 → 2002-10-31
TT Health-based Resolved 1998-09-01 → 1998-09-30
TT Health-based Resolved 1998-09-01 → 1998-09-30

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
Copper
541 µg/L 42%
of the EPA limit 1300 µg/L
worst single sample: 780 µg/L
38/46 SYR4 2016–2019
Chloroform
55.375 µg/L
No EPA limit set
worst single sample: 64.9 µg/L
36/42 SYR4 2014–2019
TTHM
56.175 µg/L 70%
of the EPA limit 80 µg/L
worst single sample: 65.6 µg/L
36/42 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
42.3 µg/L 71%
of the EPA limit 60 µg/L
worst single sample: 50.6 µg/L
23/34 SYR4 2014–2019
Trichloroacetic Acid
26.27 µg/L
No EPA limit set
worst single sample: 27.5 µg/L
23/34 SYR4 2014–2019
Dichloroacetic Acid
23.46 µg/L
No EPA limit set
worst single sample: 24.6 µg/L
20/34 SYR4 2014–2019
Lead
35.705 µg/L 238%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 260 µg/L
20/46 SYR4 2016–2019
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 20/24 SYR4 2014–2019
Bromodichloromethane
1.01 µg/L
No EPA limit set
worst single sample: 1.1 µg/L
19/42 SYR4 2014–2019
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2022
Fluoride
188.5 µg/L 4.7%
of the EPA limit 4000 µg/L
worst single sample: 190 µg/L
4/6 SYR4 2016–2019
Dibromochloromethane
0.7900 µg/L
No EPA limit set
worst single sample: 0.8000 µg/L
3/42 SYR4 2014–2019
Barium
21.95 µg/L 1.1%
of the EPA limit 2000 µg/L
worst single sample: 22 µg/L
2/6 SYR4 2016–2019
Combined Uranium
1.88 µg/L 6.3%
of the EPA limit 30 µg/L
 1/2 SYR4 2015
Gross Alpha, Excl. Radon And U
0.5670 pCi/L 3.8%
of the EPA limit 15 pCi/L
 1/2 SYR4 2015
91 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JUSTIN ELLIOTT

Frequently asked questions about Littleton Water and Light

Is Littleton Water and Light tap water safe to drink?

EPA monitoring detected 15 contaminants in Littleton Water and Light'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 and Light's water?

EPA monitoring detected Copper, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Littleton Water and Light serve?

Littleton Water and Light reports serving 6,500 people in New Hampshire, per its EPA record.

Has Littleton Water and Light had any water quality violations?

The EPA has 181 violations on file for Littleton Water and Light, of which 56 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.