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Tap water quality report

Ctwc - Bay Mountain

EPA monitoring tested this supplier for 80 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
11
detected
440
people served
30
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
New London

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.

30
health-based violations
326
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1993-12-01 → 1993-12-31
MCL Health-based Resolved 1993-12-01 → 1993-12-31
MCL Health-based Resolved 1993-12-01 → 1993-12-31
MCL Health-based Resolved 1993-12-01 → 1993-12-31
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31

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
Copper
890 µg/L 68%
of the EPA limit 1300 µg/L
worst single sample: 1030 µg/L
25/25 SYR4 2012–2017
Nitrate
1390 µg/L 14%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2023
Lead
42.64 µg/L 284%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 81 µg/L
15/25 SYR4 2012–2017
Chloroform
0.9155 µg/L
No EPA limit set
worst single sample: 1 µg/L
14/17 SYR4 2012–2019
Nitrate-Nitrite
1246 µg/L 12%
of the EPA limit 10000 µg/L
worst single sample: 1390 µg/L
9/9 SYR4 2012–2019
TTHM
2.009 µg/L 2.5%
of the EPA limit 80 µg/L
worst single sample: 2.1 µg/L
8/8 SYR4 2012–2019
Bromodichloromethane
0.6400 µg/L
No EPA limit set
worst single sample: 0.6700 µg/L
7/17 SYR4 2012–2019
Dibromochloromethane
0.5680 µg/L
No EPA limit set
worst single sample: 0.5700 µg/L
5/17 SYR4 2012–2019
Barium
7.08 µg/L 0.4%
of the EPA limit 2000 µg/L
worst single sample: 7.2 µg/L
3/3 SYR4 2013–2018
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2015
69 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MCDERMOTT, GERALD
Phone
860-664-6125
Email
[email protected]

Frequently asked questions about Ctwc - Bay Mountain

Is Ctwc - Bay Mountain tap water safe to drink?

EPA monitoring detected 11 contaminants in Ctwc - Bay Mountain'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 Ctwc - Bay Mountain's water?

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

How many people does Ctwc - Bay Mountain serve?

Ctwc - Bay Mountain reports serving 440 people in Connecticut, per its EPA record.

Has Ctwc - Bay Mountain had any water quality violations?

The EPA has 326 violations on file for Ctwc - Bay Mountain, of which 30 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.