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Tap water quality report

Calais Water Dept

EPA monitoring tested this supplier for 76 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

76
contaminants tested
15
detected
2,775
people served
12
health-based violations
Maine rankingsLead in MainePFAS in Maine
Water source
Ground water
Ownership
Local government
Counties served
Washington

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.

12
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-12-01 → 1998-12-31
MCL Health-based Resolved 1998-10-01 → 1998-10-31
MCL Health-based Resolved 1998-10-01 → 1998-10-31
MCL Health-based Resolved 1998-10-01 → 1998-10-31

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
TTHM
82.005 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 85.6 µg/L
34/34 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
52.35 µg/L 87%
of the EPA limit 60 µg/L
worst single sample: 63 µg/L
34/34 SYR4 2012–2019
Bromodichloromethane
12 µg/L
No EPA limit set
worst single sample: 14 µg/L
33/33 SYR4 2012–2019
Chloroform
58.8 µg/L
No EPA limit set
worst single sample: 67 µg/L
33/33 SYR4 2012–2019
Copper
522.5 µg/L 40%
of the EPA limit 1300 µg/L
worst single sample: 640 µg/L
32/32 SYR4 2013–2019
Trichloroacetic Acid
35.45 µg/L
No EPA limit set
worst single sample: 44 µg/L
32/32 SYR4 2012–2019
Dichloroacetic Acid
17.65 µg/L
No EPA limit set
worst single sample: 19 µg/L
28/32 SYR4 2012–2019
Lead
4.15 µg/L 28%
of the EPA limit 15 µg/L
worst single sample: 4.8 µg/L
26/32 SYR4 2013–2019
Dibromochloromethane
1.73 µg/L
No EPA limit set
worst single sample: 2 µg/L
19/33 SYR4 2012–2019
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Arsenic
0.9780 µg/L 9.8%
of the EPA limit 10 µg/L
worst single sample: 1 µg/L
2/2 SYR4 2014–2017
Barium
6.74 µg/L 0.3%
of the EPA limit 2000 µg/L
worst single sample: 6.8 µg/L
2/2 SYR4 2014–2017
Chromium
1.39 µg/L 1.4%
of the EPA limit 100 µg/L
worst single sample: 1.4 µg/L
2/2 SYR4 2014–2017
Fluoride
195 µg/L 4.9%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
2/2 SYR4 2014–2017
Nitrate
50 µg/L 0.5%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
61 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HAFFORD, ANNALEIS
Phone
207-223-2232
Email
[email protected]

Frequently asked questions about Calais Water Dept

Is Calais Water Dept tap water safe to drink?

EPA monitoring detected 15 contaminants in Calais Water Dept'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 Calais Water Dept's water?

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

How many people does Calais Water Dept serve?

Calais Water Dept reports serving 2,775 people in Maine, per its EPA record.

Has Calais Water Dept had any water quality violations?

The EPA has 24 violations on file for Calais Water Dept, of which 12 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.