KEYSTONE PLASTICS INC
PWS ID: NJ1222310 · SOUTH PLAINFIELD, New Jersey 07080
KEYSTONE PLASTICS INC serves 120 people in SOUTH PLAINFIELD, New Jersey using Groundwater water sources. It has 64 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: KEYSTONE PLASTICS INC
KEYSTONE PLASTICS INC is a private-owned transient non-community water system that delivers drinking water to 120 residents in SOUTH PLAINFIELD, New Jersey (Middlesex County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 64 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 64 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.
The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 3 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across New Jersey, EPA tracks 3,428 public water systems serving 9,570,926 people, with 204,988 cumulative violations and 22,229 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 59.8 violations. KEYSTONE PLASTICS INC's 64 violations sit above the New Jersey average. Statewide, 208 of 264 UCMR5-tested systems have reported PFAS detections (78.8%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Middlesex
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 64
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| 1,2,4-Trichlorobenzene | MR | 3 | 2005 |
| DICHLOROMETHANE | MR | 3 | 2005 |
| o-Dichlorobenzene | MR | 3 | 2005 |
| p-Dichlorobenzene | MR | 3 | 2005 |
| Vinyl chloride | MR | 3 | 2005 |
| 1,1-Dichloroethylene | MR | 3 | 2005 |
| 1,2-Dichloroethane | MR | 3 | 2005 |
| 1,1,1-Trichloroethane | MR | 3 | 2005 |
| Carbon tetrachloride | MR | 3 | 2005 |
| Trichloroethylene | MR | 3 | 2005 |
| CHLOROBENZENE | MR | 3 | 2005 |
| Toluene | MR | 3 | 2005 |
| Ethylbenzene | MR | 3 | 2005 |
| Styrene | MR | 3 | 2005 |
| Xylenes, Total | MR | 3 | 2005 |
| 1,2-Dichloropropane | MR | 3 | 2005 |
| 1,1,2-Trichloroethane | MR | 3 | 2005 |
| Tetrachloroethylene | MR | 3 | 2005 |
| Benzene | MR | 3 | 2005 |
| cis-1,2-Dichloroethylene | MR | 3 | 2005 |
| trans-1,2-Dichloroethylene | MR | 3 | 2005 |
| Lead and Copper Rule | MR | 1 | 2005 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for KEYSTONE PLASTICS INC.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID NJ1222310 on SDWISSource: EPA SDWIS Federal Reports Search
New Jersey Drinking Water Authority
NJ DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects KEYSTONE PLASTICS INC under EPA-delegated authority.
Open NJ regulator portalViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2005 | 1,2,4-Trichlorobenzene | MR | 3 | SDWIS / NJ1222310 / 2378 |
| 2005 | DICHLOROMETHANE | MR | 3 | SDWIS / NJ1222310 / 2964 |
| 2005 | o-Dichlorobenzene | MR | 3 | SDWIS / NJ1222310 / 2968 |
| 2005 | p-Dichlorobenzene | MR | 3 | SDWIS / NJ1222310 / 2969 |
| 2005 | Vinyl chloride | MR | 3 | SDWIS / NJ1222310 / 2976 |
| 2005 | 1,1-Dichloroethylene | MR | 3 | SDWIS / NJ1222310 / 2977 |
| 2005 | 1,2-Dichloroethane | MR | 3 | SDWIS / NJ1222310 / 2980 |
| 2005 | 1,1,1-Trichloroethane | MR | 3 | SDWIS / NJ1222310 / 2981 |
| 2005 | Carbon tetrachloride | MR | 3 | SDWIS / NJ1222310 / 2982 |
| 2005 | Trichloroethylene | MR | 3 | SDWIS / NJ1222310 / 2984 |
| 2005 | CHLOROBENZENE | MR | 3 | SDWIS / NJ1222310 / 2989 |
| 2005 | Toluene | MR | 3 | SDWIS / NJ1222310 / 2991 |
| 2005 | Ethylbenzene | MR | 3 | SDWIS / NJ1222310 / 2992 |
| 2005 | Styrene | MR | 3 | SDWIS / NJ1222310 / 2996 |
| 2005 | Xylenes, Total | MR | 3 | SDWIS / NJ1222310 / 2955 |
How KEYSTONE PLASTICS INC Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | KEYSTONE PLASTICS INC | New Jersey avg | Federal benchmark |
|---|---|---|---|
| Total violations | 64 | 59.8 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 0 | 6.5 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 78.8% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 120 | 2,792 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,428 regulated public water systems in New Jersey.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Read our methodology — how this data is sourced, computed, and verified.