Water Quality in BROOKLYN, NY (11231)
EPA violation data for public water systems serving ZIP code 11231.
42
Total Violations
0
Health-Based
42
Monitoring / Reporting
40
Resolved
What does this mean?
40 of 42 violations have been resolved. None of these are health-based violations — no contaminant levels exceeded federal safety limits. The remaining 42 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (42 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| E. COLI | Monitoring | 0 | N/A | Aug 31, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jul 31, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| E. COLI | Monitoring | 0 | N/A | Jun 30, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Mar 31, 2024 | Active | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Apr 30, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Apr 30, 2023 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(4)
E. COLI
19
E. COLI
19
Consumer Confidence Rule
71
E. COLI
19
2024(4)
Consumer Confidence Rule
72
Consumer Confidence Rule
72
Consumer Confidence Rule
72
E. COLI
34
How Does This Compare?
BROOKLYN (11231) has 42 recorded violations, none of which are health-based. 2 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.