Public water system · NJ1429001
ActiveParsippany-Troy Hills Water Department
At a glance
Parsippany-Troy Hills Water Department (PWSID NJ1429001) is an active community water system in Morris County, New Jersey. It reports serving 50,400 people through 15,000 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50,400
Service connections
15,000
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Parsippany-Troy Hills Water Department compare with other water systems in Morris County?
By EPA's size categories, Parsippany-Troy Hills Water Department is a large system (10,001 to 100,000 people). Morris County has 302 active public water systems, and Parsippany-Troy Hills Water Department is the 2nd-largest of them by population served. Its population served is about 34 times the county average of 1,490 people per system, and accounts for 11% of the 449,898 people reported by systems filed under the county. Across New Jersey, the 3,496 active systems average 2,750 people each. Nationally, the average active community water system reports serving 6,703 people, so Parsippany-Troy Hills Water Department is about 7.5 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Jersey has 582 active community water systems, 17% of the state's 3,496 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 128 New Jersey systems (3.7%) list purchased surface water as their primary source.
Who owns and regulates Parsippany-Troy Hills Water Department?
EPA lists Parsippany-Troy Hills Water Department as owned by a local government. The NJ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 67 of the 302 active systems in Morris County (22%) are also owned by a local government.
Does Parsippany-Troy Hills Water Department have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. The violations listed here began between January 2018 and July 2025. By type: 9 monitoring and reporting, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 11 as resolved and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Archived |
| 2023-03-22 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2023-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2020-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-03-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2020-01-01 | Required treatment not metWQP Entry Point/Tap Treatment Technique Non-Compliance · code 59 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2019-07-01 | Required treatment not metWQP Entry Point/Tap Treatment Technique Non-Compliance · code 59 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
The 12 most recent violations in EPA's records, newest first. Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Parsippany-Troy Hills Water Department: frequently asked questions
Who runs Parsippany-Troy Hills Water Department?
Parsippany-Troy Hills Water Department (PWSID NJ1429001) is a community water system owned by a local government. It is regulated by the NJ state drinking water program.
How many people does Parsippany-Troy Hills Water Department serve?
Parsippany-Troy Hills Water Department reports serving 50,400 people through 15,000 service connections in Morris County, New Jersey.
Where does Parsippany-Troy Hills Water Department get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Parsippany-Troy Hills Water Department have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Parsippany-Troy Hills Water Department's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NJ state drinking water program.
Where can I find Parsippany-Troy Hills Water Department's water quality report?
As a community water system, Parsippany-Troy Hills Water Department must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Morris County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Southeast Morris County Mua | Morris | 62,349 | Community | Surface water |
| Dover Water Commission | Morris | 27,806 | Community | Groundwater |
| Montville Twp Mua | Morris | 22,000 | Community | Purchased surface water |
| Denville Twp Water Dept | Morris | 15,881 | Community | Groundwater |
| Madison Water Dept | Morris | 15,820 | Community | Groundwater |
| Randolph Twp Public Works Dept | Morris | 14,820 | Community | Purchased groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Parsippany-Troy Hills Water Department, PWSID NJ1429001, New Jersey”, https://aquacensus.com/water-systems/new-jersey/parsippany-troy-hills-water-department-nj1429001 (data as of October 1, 2026).