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Tap water quality report

Ctwc - Columbia Heights Div.

EPA monitoring tested this supplier for 73 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
11
detected
32
people served
4
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
Tolland

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.

4
health-based violations
40
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-07-01 → 2013-09-30
MCL Health-based Resolved 2013-07-01 → 2013-09-30
MCL Health-based Resolved 2013-07-01 → 2013-09-30
MCL Health-based Resolved 2013-07-01 → 2013-09-30
Other Monitoring Resolved 2013-09-01
Other Monitoring Resolved 2013-09-01
Other Monitoring Resolved 2005-08-10
Other Monitoring Resolved 2005-08-10
MR Monitoring Resolved 1990-01-01 → 1992-12-31
MR Monitoring Resolved 1990-01-01 → 1992-12-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
1140 µg/L 88%
of the EPA limit 1300 µg/L
 67/70 SYR4 2012–2019
Lead
24 µg/L 160%
of the EPA limit, in the worst sample — 15 µg/L
 21/70 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Combined Uranium
4.9 µg/L 16%
of the EPA limit 30 µg/L
 11/12 SYR4 2012–2015
Nitrate
170 µg/L 1.7%
of the EPA limit 10000 µg/L
 10/18 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
5.1 pCi/L 34%
of the EPA limit 15 pCi/L
 8/13 SYR4 2012–2015
Nitrate-Nitrite
170 µg/L 1.7%
of the EPA limit 10000 µg/L
 5/9 SYR4 2012–2019
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/3 SYR4 2013–2019
Barium
1 µg/L 0.1%
of the EPA limit 2000 µg/L
 1/3 SYR4 2013–2019
Combined Radium (-226 And -228)
3.4 pCi/L 68%
of the EPA limit 5 pCi/L
 1/13 SYR4 2012–2015
Fluoride
110 µg/L 2.8%
of the EPA limit 4000 µg/L
 1/3 SYR4 2013–2019
62 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LOWRY, PAUL C.
Phone
860-944-9655
Email
ctwcdphadmin@ctwater.com

Frequently asked questions about Ctwc - Columbia Heights Div.

Is Ctwc - Columbia Heights Div. tap water safe to drink?

EPA monitoring detected 11 contaminants in Ctwc - Columbia Heights Div.'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 - Columbia Heights Div.'s water?

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

How many people does Ctwc - Columbia Heights Div. serve?

Ctwc - Columbia Heights Div. reports serving 32 people in Connecticut, per its EPA record.

Has Ctwc - Columbia Heights Div. had any water quality violations?

The EPA has 40 violations on file for Ctwc - Columbia Heights Div., of which 4 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.