What was found in Holden'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 | 1615 µg/L 16% of the EPA limit 10000 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Fluoride | 907.5 µg/L 23% of the EPA limit 4000 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2017 | 1/1 | SYR4 |
| Copper | 86.45 µg/L 6.7% of the EPA limit 1300 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| TTHM | 85.12 µg/L 106% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Chloroform | 69.43 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 46.035 µg/L 77% of the EPA limit 60 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Barium | 43.85 µg/L 2.2% of the EPA limit 2000 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2017 | 1/1 | SYR4 |
| Trichloroacetic Acid | 30 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 17.76 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 12.2 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 5.47 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 4.615 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Arsenic | 3.7 µg/L 37% of the EPA limit 10 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2017 | 1/1 | SYR4 |
| Trichloroethylene | 3.235 µg/L 65% of the EPA limit 5 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.936 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 2.8 µg/L 1.4% of the EPA limit 200 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 2.35 µg/L 3.4% of the EPA limit 70 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| 1,1,2-Trichloroethane | 2.261 µg/L 45% of the EPA limit 5 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.39 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2017 | 1/1 | SYR4 |
| Dibromoacetic Acid | 0.7950 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.6170 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0162 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0067 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0055 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0049 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0033 µg/L No EPA limit set Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0031 mg/L 21% of the EPA limit 0.0150 mg/L Main supplier: HOLDEN WATER DIVISION, DPW · 18,016 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 Holden
| Supplier | Population served |
|---|---|
| HOLDEN WATER DIVISION, DPW | 18,016 |
Frequently asked questions about Holden tap water
Is Holden tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Holden. 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 Holden?
1 public water supplier report drinking-water monitoring for Holden, Massachusetts to the EPA. Each is listed above with its population served.
What contaminants are in Holden's water?
The contaminants EPA monitoring detected in Holden include Nitrate, Fluoride, Copper, TTHM, Chloroform. 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.