Tap WaterIndex

← Maine

Tap water quality report

Houlton Water Company

EPA monitoring tested this supplier for 97 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

97
contaminants tested
15
detected
4,735
people served
5
health-based violations
Maine rankingsLead in MainePFAS in Maine
Water source
Ground water
Ownership
Local government
Counties served
Aroostook

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.

5
health-based violations
30
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2004-06-01 → 2004-06-30
MCL Health-based Resolved 2004-06-01 → 2004-06-30
MCL Health-based Resolved 2004-06-01 → 2004-06-30
MCL Health-based Resolved 2004-06-01 → 2004-06-30
MCL Health-based Resolved 2004-06-01 → 2004-06-30
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2021-07-01
Other Monitoring Resolved 2021-07-01
MR Monitoring Resolved 2021-01-01 → 2023-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0048 µg/L 1/4 2025

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
Fluoride
1000 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L
104/104 SYR4 2012–2019
Copper
140 µg/L 11%
of the EPA limit 1300 µg/L
worst single sample: 240 µg/L
44/44 SYR4 2014–2017
Lead
3.635 µg/L 24%
of the EPA limit 15 µg/L
worst single sample: 6.5 µg/L
34/44 SYR4 2014–2017
Nitrate
4215 µg/L 42%
of the EPA limit 10000 µg/L
worst single sample: 4600 µg/L
32/32 SYR4 2012–2019
Lead
0.0034 mg/L 23%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2023
Barium
9.07 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 9.1 µg/L
4/4 SYR4 2014–2017
Chromium
2.91 µg/L 2.9%
of the EPA limit 100 µg/L
worst single sample: 3 µg/L
4/4 SYR4 2014–2017
Chloroform
3.49 µg/L
No EPA limit set
worst single sample: 3.6 µg/L
3/9 SYR4 2013–2019
TTHM
6.09 µg/L 7.6%
of the EPA limit 80 µg/L
worst single sample: 6.1 µg/L
3/5 SYR4 2013–2019
Bromodichloromethane
2.495 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
2/9 SYR4 2013–2019
Nitrate-Nitrite
2891.5 µg/L 29%
of the EPA limit 10000 µg/L
worst single sample: 3000 µg/L
2/2 SYR4 2017
Dibromochloromethane
1.1 µg/L
No EPA limit set
 1/9 SYR4 2013–2019
Dichloroacetic Acid
1 µg/L
No EPA limit set
 1/5 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1 µg/L 1.7%
of the EPA limit 60 µg/L
 1/5 SYR4 2013–2019
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDiquatEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SHERMAN, GREG
Phone
207-532-2259
Email
[email protected]

Frequently asked questions about Houlton Water Company

Is Houlton Water Company tap water safe to drink?

EPA monitoring detected 15 contaminants in Houlton Water Company'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 Houlton Water Company's water?

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

How many people does Houlton Water Company serve?

Houlton Water Company reports serving 4,735 people in Maine, per its EPA record.

Has Houlton Water Company had any water quality violations?

The EPA has 30 violations on file for Houlton Water Company, of which 5 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.