Tap Water Quality Report
Tap water quality in BERLIN, Connecticut
Tap water in BERLIN, Connecticut receives a grade of D (62/100) from TapWaterSafety.org. It's served by 3 public water systems, primarily NEW BRITAIN WATER DEPARTMENT. The most significant water quality concerns are: Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; PFAS contamination. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in BERLIN's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving BERLIN.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 38.9 ppb, 259x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 12.0 ppb, 200x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 10.3 ppb, 103x above the EWG health guideline of 0.1 ppb.
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.
Water systems serving BERLIN
BERLIN is served by 3 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
NEW BRITAIN WATER DEPARTMENT
- Total trihalomethanes (TTHMs) significantly above health guideline
- Haloacetic acids (HAA9) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
METROPOLITAN DISTRICT COMMISSION
- Haloacetic acids (HAA9) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
MERIDEN WATER DIVISION
- PFAS contamination
- Haloacetic acids (HAA9) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
Recommended filters for BERLIN
Filters matched to the specific contaminants in BERLIN's water supply.
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.
All contaminants detected in BERLIN'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 |
31.3 ppb | 0.06 | — | — | — | — | — | 522× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
32.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 323× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
46.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 306× over |
| Trichloroacetic acid Disinfection byproduct |
24.5 ppb | 0.1 | — | — | — | — | — | 245× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.211 ppt | 0.001 | 10.0 | — | — | — | — | 211× over |
| Bromodichloromethane Disinfection byproduct |
6.94 ppb | 0.06 | — | — | — | — | — | 116× over |
| Chloroform Disinfection byproduct |
40.2 ppb | 0.4 | — | — | — | — | — | 100× over |
| Dichloroacetic acid Disinfection byproduct |
9.45 ppb | 0.2 | — | — | — | — | — | 47× over |
| Dibromochloromethane Disinfection byproduct |
1.52 ppb | 0.1 | — | — | — | — | — | 15× over |
| Radium, combined (-226 and -228) Radiological |
0.43 pCi/L | 0.05 | 5.0 | — | — | — | — | 8.5× over |
| Chromium (hexavalent) Heavy metal |
0.13 ppb | 0.02 | — | — | — | — | — | 6.5× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.558 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 6.2× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
1.31 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 4.4× over |
| Nitrate Inorganic |
0.537 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.8× over |
| Nitrate and nitrite Inorganic |
0.529 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.8× over |
| Dibromoacetic acid Disinfection byproduct |
0.0886 ppb | 0.03 | — | — | — | — | — | 3.0× over |
| Chlorate Disinfection byproduct |
124.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Uranium Radiological |
0.15 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.0496 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Barium Heavy metal |
60.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
5.0 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.0243 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.609 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.639 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.105 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.035 ppb | 25.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.0016 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.305 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
0.263 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.521 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.253 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.106 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.083 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.298 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Nitrite Inorganic |
0.00407 ppm | — | 1.0 | — | — | — | — | Below guideline |
| Bromide Other |
13.6 ppb | — | — | — | — | — | — | 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 NEW BRITAIN WATER DEPARTMENT.
General Contact
Treatment Plant
ZIP codes served
BERLIN's public water systems serve the following ZIP codes: