Drinking water quality · 2023
· Verified
What's in Nyc, NY tap water
Only 6 of 27 core regulated contaminants were reported for Nyc, NY. What was measured is not clean — but most of the picture is missing.
- !2 contaminants at or above a federal limit — worst is Bromochloroacetic acid at 23.3x
- !6 of 27 core regulated contaminants reported — 21 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −60 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −20 core regulated contaminants never reported (6/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- Bromochloroacetic acid23.3× the federal limit1.4 mg/L · limit 0.06 mg/L
Part of the broader HAA9 group; monitored without its own enforceable limit.
- Turbidity2.1× the federal limit2.1 NTU · limit 1 NTU
High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
higher than 90% of U.S. systems
+20 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Lead | 10 ug/L | 15 ug/L |
| Copper | 0.195 mg/L | 1.3 mg/L |
| Nitrate | 0.1 mg/L | 10 mg/L |
| Nitrite | Not detected mg/L | 1 mg/L |
| Sulfate | 6 mg/L | — |
| Potassium | 0.7 mg/L | — |
| Sodium | 13 mg/L | — |
| Strontium | 23 | — |
| Zinc | Not detected mg/L | — |
| Cryptosporidium | 0–4 | 0 |
| Giardia lamblia | 0–14 | 0 |
| Total Coliform | 1.9 % | 5 % |
| Dehp | Not detected mg/L | 0.006 mg/L |
| Hexachlorocyclopentadiene | Not detected mg/L | 0.05 mg/L |
| PFOA | Not detected ng/L | 4 ng/L |
| pH | 7.3 | — |
| Specific Conductance | 112 | — |
| Temperature | 57 | — |
| TOC | 1.6 mg/L | — |
| Total Dissolved Solids | 66 mg/L | — |
What this report doesn't tell you
21 of the 27 contaminants a community water system normally reports do not appear anywhere in Nyc, NY's data. Absent is not the same as absent-from-the-water — it means nobody published a number.