Water Quality Report · Updated May 12, 2026
AQUARION-EASTERN FAIRFIELD COUNTY
AQUARION-EASTERN FAIRFIELD COUNTY delivers tap water graded F (51/100) by TapWaterSafety.org. The utility serves approximately 351,756 residents in BEACON FALLS, Connecticut using surface water. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 203-926-4320.
Is BEACON FALLS tap water safe to drink?
AQUARION-EASTERN FAIRFIELD COUNTY delivers tap water that earns a grade of F (51/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 351,756 residents in BEACON FALLS and 19 other communities, drawing from surface water.
Public testing data identifies 14 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Trichloroacetic acid, Bromodichloromethane, Chloroform, Dichloroacetic acid, Perfluorooctanoic acid (PFOA), Dibromochloromethane, Dibromoacetic acid, Nitrate, Nitrate and nitrite, Perfluorooctane sulfonate (PFOS), Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for BEACON FALLS residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for AQUARION-EASTERN FAIRFIELD COUNTY.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 58.1 ppb, 968x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 52.4 ppb, 349x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 31.9 ppb, 319x above the EWG health guideline of 0.1 ppb.
Contact AQUARION-EASTERN FAIRFIELD COUNTY
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for BEACON FALLS
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 51/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
58.1 ppb | 0.06 | — | — | — | — | — | 968× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
52.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 349× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
31.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 319× over |
| Trichloroacetic acid Disinfection byproduct |
18.0 ppb | 0.1 | — | — | — | — | — | 180× over |
| Bromodichloromethane Disinfection byproduct |
10.0 ppb | 0.06 | — | — | — | — | — | 167× over |
| Chloroform Disinfection byproduct |
37.1 ppb | 0.4 | — | — | — | — | — | 93× over |
| Dichloroacetic acid Disinfection byproduct |
12.6 ppb | 0.2 | — | — | — | — | — | 63× over |
| Perfluorooctanoic acid (PFOA) PFAS |
1.66 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 18× over |
| Dibromochloromethane Disinfection byproduct |
1.68 ppb | 0.1 | — | — | — | — | — | 17× over |
| Dibromoacetic acid Disinfection byproduct |
0.331 ppb | 0.03 | — | — | — | — | — | 11× over |
| Nitrate Inorganic |
0.765 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 5.5× over |
| Nitrate and nitrite Inorganic |
0.525 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.7× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.893 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 3.0× over |
| Chromium (hexavalent) Heavy metal |
0.0506 ppb | 0.02 | — | — | — | — | — | 2.5× over |
| Chlorate Disinfection byproduct |
137.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
10.4 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.01 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
12.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
0.243 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0621 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
1.47 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.807 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.75 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.279 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.293 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0588 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.324 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
AQUARION-EASTERN FAIRFIELD COUNTY service area
This water system serves 20 communities in Fairfield County, Connecticut. Click any city for its dedicated tap water quality page.
Find the right filter for BEACON FALLS water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.