Is Aquarion-Simsbury Regional Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Hartford

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.

health-based violations

195

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	1994-11-01 → 1994-11-30
MCL	Health-based	Resolved	1994-11-01 → 1994-11-30
MCL	Health-based	Resolved	1994-11-01 → 1994-11-30
MCL	Health-based	Resolved	1994-11-01 → 1994-11-30
MCL	Health-based	Resolved	1991-09-01 → 1991-09-30
MCL	Health-based	Resolved	1991-09-01 → 1991-09-30
MCL	Health-based	Resolved	1991-09-01 → 1991-09-30
MCL	Health-based	Resolved	1991-09-01 → 1991-09-30
MCL	Health-based	Resolved	1991-09-01 → 1991-09-30
MR	Monitoring	Resolved	2019-12-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFHXS	0.0037 µg/L	3/6	2025
PFOA	0.0044 µg/L	2/6	2025
Adona	0.0081 µg/L	1/6	2025
PFOS	0.0043 µg/L	1/6	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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	3645.5 µg/L 36% of the EPA limit 10000 µg/L worst single sample: 3801 µg/L	108/108	SYR4	2012–2019
Copper	848.5 µg/L 65% of the EPA limit 1300 µg/L worst single sample: 1320 µg/L	104/107	SYR4	2012–2019
Dibromochloromethane	2.4 µg/L No EPA limit set worst single sample: 3 µg/L	81/168	SYR4	2012–2019
TTHM	9.7 µg/L 12% of the EPA limit 80 µg/L worst single sample: 12 µg/L	81/83	SYR4	2012–2019
Bromodichloromethane	3.32 µg/L No EPA limit set worst single sample: 4 µg/L	77/168	SYR4	2012–2019
Chloroform	3.085 µg/L No EPA limit set worst single sample: 4.6 µg/L	64/168	SYR4	2012–2019
Nitrate-Nitrite	3624.5 µg/L 36% of the EPA limit 10000 µg/L worst single sample: 3801 µg/L	54/54	SYR4	2012–2019
Lead	8 µg/L 53% of the EPA limit 15 µg/L worst single sample: 32 µg/L	45/107	SYR4	2012–2019
Bromoform	1 µg/L No EPA limit set	42/168	SYR4	2012–2019
Tetrachloroethylene	2.4 µg/L 48% of the EPA limit 5 µg/L worst single sample: 2.5 µg/L	31/128	SYR4	2012–2019
1,2-Dichloropropane	0.9600 µg/L 19% of the EPA limit 5 µg/L worst single sample: 1 µg/L	29/128	SYR4	2012–2019
Dibromoacetic Acid	1 µg/L No EPA limit set	24/40	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	3 µg/L 5% of the EPA limit 60 µg/L	20/40	SYR4	2012–2019
Lead	0.00030 mg/L 2% of the EPA limit 0.0150 mg/L	19/19	LCR	2025
Dichloroacetic Acid	1 µg/L No EPA limit set	18/40	SYR4	2012–2019
Barium	136.9 µg/L 6.8% of the EPA limit 2000 µg/L worst single sample: 138 µg/L	12/12	SYR4	2012–2017
Fluoride	88 µg/L 2.2% of the EPA limit 4000 µg/L worst single sample: 110 µg/L	12/12	SYR4	2012–2017
Trichloroacetic Acid	1 µg/L No EPA limit set	4/40	SYR4	2012–2019
Combined Uranium	2.5 µg/L 8.3% of the EPA limit 30 µg/L worst single sample: 2.6 µg/L	3/7	SYR4	2012–2019
Lithium	15.1 µg/L No EPA limit set	2/6	UCMR-5	2025
Cadmium	1 µg/L 20% of the EPA limit 5 µg/L	1/12	SYR4	2012–2017
Chromium	1 µg/L 1% of the EPA limit 100 µg/L	1/12	SYR4	2012–2017
Combined Radium (-226 And -228)	2.6 pCi/L 52% of the EPA limit 5 pCi/L	1/7	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	4.65 pCi/L 31% of the EPA limit 15 pCi/L	1/7	SYR4	2012–2019

81 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

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

Frequently asked questions about Aquarion-Simsbury Regional

Is Aquarion-Simsbury Regional tap water safe to drink?

EPA monitoring detected 28 contaminants in Aquarion-Simsbury 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-Simsbury Regional's water?

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

How many people does Aquarion-Simsbury Regional serve?

Aquarion-Simsbury Regional reports serving 14,691 people in Connecticut, per its EPA record.

Has Aquarion-Simsbury Regional had any water quality violations?

The EPA has 195 violations on file for Aquarion-Simsbury Regional, of which 9 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.