What was found in Shrewsbury's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1563.5 µg/L 16% of the EPA limit 10000 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Fluoride | 708.8 µg/L 18% of the EPA limit 4000 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Barium | 59.6 µg/L 3% of the EPA limit 2000 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Copper | 52 µg/L 4% of the EPA limit 1300 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2014 | 1/1 | SYR4 |
| Chromium | 22.42 µg/L 22% of the EPA limit 100 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Nitrite | 19.6 µg/L 2% of the EPA limit 1000 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| TTHM | 9.4955 µg/L 12% of the EPA limit 80 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Arsenic | 4.835 µg/L 48% of the EPA limit 10 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Bromoform | 4.425 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 4.369 µg/L 87% of the EPA limit 5 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 3.6 µg/L 72% of the EPA limit 5 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 3.2735 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.695 µg/L 4.5% of the EPA limit 60 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.43 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 2.395 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.025 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Picloram | 1.9 µg/L 0.4% of the EPA limit 500 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Chloroform | 0.7400 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 0.6100 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 0.5500 µg/L 0.8% of the EPA limit 70 µg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0056 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0054 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0048 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0043 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0031 µg/L No EPA limit set Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SHREWSBURY WATER DEPARTMENT · 38,325 people · 2025 | 1/1 | LCR |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Shrewsbury
| Supplier | Population served |
|---|---|
| SHREWSBURY WATER DEPARTMENT | 38,325 |
Frequently asked questions about Shrewsbury tap water
Is Shrewsbury tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Shrewsbury. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Shrewsbury?
1 public water supplier report drinking-water monitoring for Shrewsbury, Massachusetts to the EPA. Each is listed above with its population served.
What contaminants are in Shrewsbury's water?
The contaminants EPA monitoring detected in Shrewsbury include Nitrate, Fluoride, Barium, Copper, Chromium. The full list, with the level at the main supplier and the data source, is in the table above.
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.