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Tap water quality report

Aquarion-Newtown Regional

EPA monitoring tested this supplier for 110 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
26
detected
6,054
people served
4
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
Fairfield

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
35
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2002-06-01 → 2002-06-30
MCL Health-based Resolved 2002-06-01 → 2002-06-30
MCL Health-based Resolved 2002-06-01 → 2002-06-30
MCL Health-based Resolved 2002-06-01 → 2002-06-30
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2018-07-01
Other Monitoring Unaddressed 2006-07-01
MR Monitoring Resolved 2004-01-01 → 2004-12-31
MR Monitoring Resolved 2004-01-01 → 2004-12-31
MR Monitoring Resolved 2004-01-01 → 2004-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0076 µg/L 4/4 2023
PFOA 0.0159 µg/L 4/4 2023
PFOS 0.0127 µg/L 4/4 2023
Pfpea 0.0084 µg/L 4/4 2023
Pfhpa 0.0049 µg/L 3/4 2023
Pfba 0.0058 µg/L 2/4 2023
PFBS 0.0073 µg/L 2/4 2023
PFHXS 0.0049 µg/L 2/4 2023

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
578 µg/L 44%
of the EPA limit 1300 µg/L
worst single sample: 7940 µg/L
69/69 SYR4 2012–2018
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 23/23 LCR 2024
Nitrate
1400 µg/L 14%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Bromodichloromethane
12.7 µg/L
No EPA limit set
worst single sample: 14 µg/L
14/23 SYR4 2012–2019
Bromoform
5.35 µg/L
No EPA limit set
worst single sample: 6 µg/L
14/23 SYR4 2012–2019
Chloroform
18.55 µg/L
No EPA limit set
worst single sample: 27 µg/L
14/23 SYR4 2012–2019
Dibromochloromethane
11 µg/L
No EPA limit set
 14/23 SYR4 2012–2019
TTHM
46.3 µg/L 58%
of the EPA limit 80 µg/L
worst single sample: 58 µg/L
14/14 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
6 µg/L 10%
of the EPA limit 60 µg/L
 13/14 SYR4 2012–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
 10/14 SYR4 2012–2019
Dichloroacetic Acid
3 µg/L
No EPA limit set
 10/14 SYR4 2012–2019
Nitrate-Nitrite
1299.6 µg/L 13%
of the EPA limit 10000 µg/L
worst single sample: 1400 µg/L
9/9 SYR4 2012–2019
Trichloroacetic Acid
1 µg/L
No EPA limit set
 8/14 SYR4 2012–2019
Lead
34.5 µg/L 230%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 44 µg/L
6/69 SYR4 2012–2018
Barium
34.7 µg/L 1.7%
of the EPA limit 2000 µg/L
worst single sample: 35 µg/L
3/3 SYR4 2014–2017
Fluoride
49 µg/L 1.2%
of the EPA limit 4000 µg/L
worst single sample: 50 µg/L
3/3 SYR4 2014–2017
Combined Radium (-226 And -228)
1.67 pCi/L 33%
of the EPA limit 5 pCi/L
worst single sample: 1.7 pCi/L
2/3 SYR4 2013–2019
Monochloroacetic Acid
1 µg/L
No EPA limit set
 2/14 SYR4 2012–2019
84 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ULRICH, ROBERT J.
Phone
203-926-4320
Email
[email protected]

Frequently asked questions about Aquarion-Newtown Regional

Is Aquarion-Newtown Regional tap water safe to drink?

EPA monitoring detected 26 contaminants in Aquarion-Newtown Regional'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 Aquarion-Newtown Regional's water?

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

How many people does Aquarion-Newtown Regional serve?

Aquarion-Newtown Regional reports serving 6,054 people in Connecticut, per its EPA record.

Has Aquarion-Newtown Regional had any water quality violations?

The EPA has 35 violations on file for Aquarion-Newtown Regional, of which 4 are health-based (a contaminant limit or required treatment was breached) and 1 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.