Water quality for ZIP code 08544
ZIP 08544 covers Princeton in Mercer County, New Jersey, one of 22 ZIP codes in the county. 99 active public water systems serve the county; 69 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Mercer County
10 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Aqua NJ Hamilton Square Hamilton Twp |
39,128 | 4 | |
| East Windsor Mua East Windsor Twp |
25,000 | 2 | |
| Aqua NJ Lawrence Lawrence Twp |
8,655 | 3 | |
| Hightstown Water Department Hightstown Boro |
5,400 | 0 | |
| Pennington W Dept Pennington Boro |
2,600 | 3 | |
| Hopewell Boro W Dept Hopewell Boro |
2,035 | 4 | |
| Lawrenceville School Lawrence Twp |
1,200 | 2 | |
| Mercer County Correctional Center Hopewell Twp.1106- |
860 | 5 | |
| Washington Crossing Park Estates Hopewell Twp.1106- |
356 | 4 | |
| Robbinsville Twp Newtown Village Washington Twp |
300 | 2 |
Non-community systems in Mercer County (88: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pennington Shop-Rite Hopewell Twp.1106- |
3,663 | 1 | 0 | |
|
Bent Iron Brewery Hamilton Twp |
1,201 | 1 | 1 | |
|
Terhune Orchards Lawrence Twp |
1,025 | 1 | 0 | |
|
Corner Stone Court Hopewell Twp.1106- |
940 | 1 | 0 | |
|
Timberlane Middle School Hopewell Twp.1106- |
901 | 7 | 0 | |
|
Washington Cross SP Green Grove Pic Area Hopewell Twp.1106- |
720 | 2 | 0 | |
|
Washington Crossing SP Knox Grove Hopewell Twp.1106- |
720 | 1 | 1 | |
|
Washington Crossing SP Visitors Center Hopewell Twp.1106- |
720 | 1 | 1 | |
|
Washington Crossing Sp-Interpretive Ctr Hopewell Twp.1106- |
720 | 1 | 1 | |
|
Washington Crossing State PK Day Use Trl Hopewell Twp.1106- |
720 | 2 | 1 | |
|
Washington Crossing State PK Stone Barn Hopewell Twp.1106- |
720 | 2 | 1 | |
|
The Pennington School Pennington Boro |
565 | 1 | 0 | |
|
Bear Tavern School Hopewell Twp.1106- |
555 | 5 | 1 | |
|
Working Dog Winery Washington Twp |
554 | 0 | 0 | |
|
Hopewell Valley Golf Clu Hopewell Twp.1106- |
548 | 1 | 1 | |
|
Hamilton YMCA at Sawmill Road Hamilton Twp |
498 | 0 | 0 | |
|
Stacys Cream King Pennington Boro |
400 | 3 | 2 | |
|
Wildflowers Hopewell Twp.1106- |
362 | 1 | 1 | |
|
Princeton Community Church Hopewell Twp.1106- |
305 | 1 | 0 | |
|
Unitarian Universalist C Hopewell Twp.1106- |
271 | 0 | 0 | |
|
Tree Farm Village Hopewell Twp.1106- |
230 | 1 | 0 | |
|
Pennington Cleaners Hopewell Twp.1106- |
215 | 1 | 1 | |
|
Golden Nugget Antique Flea Mkt Hopewell Twp.1106- |
205 | 0 | 0 | |
|
Little League of Hopewell Twp Hopewell Twp.1106- |
200 | 2 | 0 | |
|
Princeton RD Professiona East Windsor Twp |
165 | 0 | 0 | |
|
Professor's Hard Cider Washington Twp |
162 | 1 | 1 | |
|
Goddard School West Windsor West Windsor Twp |
155 | 0 | 0 | |
|
The Watershed Institute Hopewell Twp.1106- |
152 | 3 | 0 | |
|
Kooltronic INC Hopewell Twp.1106- |
140 | 1 | 1 | |
|
Titusville Marketplace Hopewell Twp.1106- |
135 | 0 | 0 | |
|
Pennington Montessori School Hopewell Twp.1106- |
133 | 1 | 0 | |
|
Offices at Pennington Point Hopewell Twp.1106- |
125 | 0 | 0 | |
|
Saint Peter Lutheran Church Hopewell Twp.1106- |
125 | 1 | 1 | |
|
Its Nutts Hopewell Twp.1106- |
120 | 0 | 0 | |
|
Titusville Academy Princeton Hopewell Twp.1106- |
116 | 0 | 0 | |
|
Patriots Crossing Restaurant Hopewell Twp.1106- |
112 | 0 | 0 | |
|
Princeton Child Developmnt Ins Lawrence Twp |
110 | 1 | 0 | |
|
Hillbilly Hall, Inc. Hopewell Twp.1106- |
104 | 2 | 1 | |
|
Marcos Pizza Hopewell Twp.1106- |
104 | 2 | 1 | |
|
Mercer Professional Center @ Penn Hopewell Twp.1106- |
100 | 0 | 0 | |
|
Revere Restaurant Ewing Twp |
100 | 0 | 0 | |
|
ST George R C Church Hopewell Twp.1106- |
100 | 1 | 0 | |
|
The Village Learning Center Hopewell Twp.1106- |
100 | 1 | 0 | |
|
Titusville Presbyterian Church Hopewell Twp.1106- |
100 | 0 | 0 | |
|
Hopewell Munic Services Hopewell Twp.1106- |
95 | 2 | 1 | |
|
Word Christian Fellowship Int Hopewell Twp.1106- |
91 | 0 | 0 | |
|
Princeton Windsor Office East Windsor Twp |
85 | 1 | 1 | |
|
Princeton Technology Ctr Hopewell Twp.1106- |
80 | 1 | 1 | |
|
Pennington Point West Hopewell Twp.1106- |
76 | 1 | 0 | |
|
Hopewell Tennis and Swim Hopewell Twp.1106- |
75 | 1 | 1 |
About this data
Water systems are matched to Mercer County, the county this ZIP code lies in, largest first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Jersey records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.