Tap Water Quality Report
Tap water quality in BRANFORD, Connecticut
Tap water in BRANFORD, Connecticut receives a grade of D (61/100) from TapWaterSafety.org. It's served by REGIONAL WATER AUTHORITY. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in BRANFORD's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving BRANFORD.
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 34.0 ppb, 567x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 31.5 ppb, 315x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 39.4 ppb, 263x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for REGIONAL WATER AUTHORITY (system ID CT0930011) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for BRANFORD
Filters matched to the specific contaminants in BRANFORD's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in BRANFORD's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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 |
34.0 ppb | 0.06 | — | — | — | — | — | 567× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
31.5 ppb | 0.1 | 60.0 | 60 | — | — | — | 315× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
39.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 263× over |
| Trichloroacetic acid Disinfection byproduct |
17.1 ppb | 0.1 | — | — | — | — | — | 171× over |
| Bromodichloromethane Disinfection byproduct |
5.17 ppb | 0.06 | — | — | — | — | — | 86× over |
| Chloroform Disinfection byproduct |
24.3 ppb | 0.4 | — | — | — | — | — | 61× over |
| Dichloroacetic acid Disinfection byproduct |
11.0 ppb | 0.2 | — | — | — | — | — | 55× over |
| Chromium (hexavalent) Heavy metal |
0.237 ppb | 0.02 | — | — | — | — | — | 12× over |
| Dibromochloromethane Disinfection byproduct |
0.851 ppb | 0.1 | — | — | — | — | — | 8.5× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.763 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 8.5× over |
| Nitrate and nitrite Inorganic |
0.94 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.7× over |
| Nitrate Inorganic |
0.913 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.5× over |
| Radium, combined (-226 and -228) Radiological |
0.28 pCi/L | 0.05 | 5.0 | — | — | — | — | 5.5× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
1.32 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 4.4× over |
| Dibromoacetic acid Disinfection byproduct |
0.0719 ppb | 0.03 | — | — | — | — | — | 2.4× over |
| Manganese Heavy metal |
93.7 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Uranium Radiological |
0.4 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| Chlorate Disinfection byproduct |
177.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
82.7 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
2.71 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Di(2-ethylhexyl) phthalate Semi-volatile organic compound |
0.146 ppb | 3.0 | 6.0 | — | — | — | — | Below guideline |
| Vanadium Other |
0.657 ppb | 21.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.0104 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.468 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.00402 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.337 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.103 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0638 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Bromide Other |
26.3 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.123 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.527 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from REGIONAL WATER AUTHORITY.
General Contact
Treatment Plant
ZIP codes served
BRANFORD's public water systems serve the following ZIP codes: