Community Water System · PWS NJ1106002
Mercer County Correctional Center
Operator location Lambertville, New Jersey - smaller served population (≤ 999) at 860 people served; 308 SDWIS violations on record from groundwater sources.
- 860
- People served (this PWS)
- 308
- EPA violations (this PWS)
- 9
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Mercer County Correctional Center standing, high SDWIS violation third
860 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). Population rank #21,639 of 29,740 among systems serving 500+.
The verdict
Mercer County Correctional Center sits in the upper third of the sitemap cohort by violation count (308), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (860; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 3% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #21,639 of 29,740
- Population · /systems
- #442 of 689
- Population · NJ
- 308
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 2
- County
- Mercer
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 263
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 23 | 2021 |
| TTHM | MR | 17 | 2015 |
| Coliform (TCR) | MR | 16 | 2013 |
| Consumer Confidence Rule | Other | 12 | 2023 |
| Chlorine | MR | 12 | 2024 |
| DICHLOROMETHANE | MR | 9 | 2023 |
| 1,2,4-Trichlorobenzene | MR | 8 | 2023 |
| Xylenes, Total | MR | 8 | 2023 |
| o-Dichlorobenzene | MR | 8 | 2023 |
| p-Dichlorobenzene | MR | 8 | 2023 |
| Vinyl chloride | MR | 8 | 2023 |
| 1,2-Dichloroethane | MR | 8 | 2023 |
| 1,1,1-Trichloroethane | MR | 8 | 2023 |
| Trichloroethylene | MR | 8 | 2023 |
| Tetrachloroethylene | MR | 8 | 2023 |
| Styrene | MR | 8 | 2023 |
| cis-1,2-Dichloroethylene | MR | 8 | 2023 |
| Carbon tetrachloride | MR | 8 | 2023 |
| 1,2-Dichloropropane | MR | 8 | 2023 |
| 1,1,2-Trichloroethane | MR | 8 | 2023 |
| Toluene | MR | 8 | 2023 |
| Ethylbenzene | MR | 8 | 2023 |
| 1,1-Dichloroethylene | MR | 8 | 2023 |
| CHLOROBENZENE | MR | 8 | 2023 |
| Benzene | MR | 8 | 2023 |
| trans-1,2-Dichloroethylene | MR | 8 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2015 |
| Lead and Copper Rule | TT | 5 | 2017 |
| Nitrate | MR | 5 | 2021 |
| Revised Total Coliform Rule | RPT | 4 | 2017 |
Violation Count vs. the National Corpus
Mercer County Correctional Center has 308 recorded EPA violations, 91% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 9% carry more. 3% of this system's own violations are health-based (9 of 308), and it ranks #21,639 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
308 Higher than most more violations than 91% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Mercer County Correctional Center
EPA SDWIS lists 860 people served and 2 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · NJ DEP, Bureau of Safe Drinking Water
Nationwide peers
308 violations · 860 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Mercer County Correctional Center
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in New Jersey compares on the same EPA violation measures. New Jersey systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.