Mount Olive Township W D Main Water System water quality
Mount Olive, NJ · serves 7,887 people (2,629 connections) · Groundwater · Local government · EPA ID NJ1427005
Data: U.S. EPA · How we read the data · How we check it
Summary
PFAS above the 2024 federal limits. Systems have until 2029 to meet the PFAS limits.
Is it an emergency? No: PFAS limits are about years of exposure, not a glass of water, and nothing in EPA's data calls for you to stop drinking the water today. If your utility ever issues a boil-water or do-not-drink notice, follow it.
- PFAS
- Above limitPFOA, PFOS above the federal limit in EPA's 2023–2025 testing (PFOA 6.2 ppt vs a limit of 4 ppt, PFOS 4.85 ppt vs a limit of 4 ppt, where ppt = parts per trillion).
- Lead
- Below action level0 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period ending Jun 2026. Your home's pipes can make yours higher.
- Violations
- Resolved2 health-based violations since 2016, most recently Aug 2024. One required an urgent public notice within 24 hours (the kind behind boil-water notices), most recently Aug 2024. What to do if you get a notice.
- Pregnant, or mixing baby formula with tap water? Babies drink more water for their size, so PFAS exposure matters more for them. Consider bottled water or a filter certified for PFAS for formula, and ask your doctor. Health effects.
- To lower your PFAS exposure now, a home filter certified for PFAS reduction works (reverse osmosis, or activated carbon certified to NSF/ANSI 53 or 58). Filters for these results.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Got a boil-water or do-not-drink notice? What each notice means and what to do.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Mount Olive Township W D Main Water System's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (973) 584-7086. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 3 entry points tested Apr 2023 to Nov 2023. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Above limit Limit 4 ppt | 6.2 ppt 1.55× the limit |
| PFOS Above limit Limit 4 ppt | 4.85 ppt 1.21× the limit |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Detected, below limit Guideline 3,000 ppt | 3.65 ppt |
| PFPeA Detected, no limit | 5 ppt |
New Jersey has its own PFAS limits. PFOA 14 ppt (this system's highest average: 6.2 ppt), PFOS 13 ppt (this system's highest average: 4.85 ppt), PFNA 13 ppt (this system's highest average: not detected). State compliance is judged on the state's own sampling, so ask the utility or the state program whether it meets them.
For context: the PFOA average is higher than at 66% of the New Jersey systems EPA tested and the PFOS average is higher than at 81% of the New Jersey systems EPA tested.
29 PFAS tested, 4 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 6 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 0 ppb lead (Jan 2026 – Jun 2026). Below action level
Highest since 2016: 2.39 ppb (Dec 2021).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2026 – Jun 2026 | 0 ppb |
| Jul 2025 – Dec 2025 | 0 ppb |
| Jan 2025 – Jun 2025 | 0 ppb |
Earlier results (9)
| Jan 2019 – Dec 2021 | 2.39 ppb |
| Jan 2016 – Dec 2018 | 0 ppb |
| Jan 2013 – Dec 2015 | 2 ppb |
| Jan 2010 – Dec 2012 | 2 ppb |
| Jan 2007 – Dec 2009 | 5 ppb |
| Jan 2004 – Dec 2006 | 2 ppb |
| Jan 2002 – Dec 2004 | 0 ppb |
| Jul 2002 – Dec 2002 | 15 ppb |
| Jul 2001 – Dec 2001 | 11 ppb |
Copper 90th percentile: 3.71 ppm (Dec 1993), action level 1,300 ppb.
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
| When | What happened |
|---|---|
| Aug 2024 | After positive bacteria tests, the system did not complete the required check of what went wrong. EPA record: Revised Total Coliform Rule · Treatment Technique, Level 1 Assessment (RTCR) Resolved |
| Aug 2024 | E. coli was confirmed in the water. E. coli means the water may have been contaminated with sewage or animal waste. Urgent public notice required What that means EPA record: Revised Total Coliform Rule · Maximum Contaminant Level Violation, E. coli (RTCR) Resolved |
5 unresolved monitoring or reporting violations: Lead and Copper Rule, E. coli.
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Where it serves
ZIP codes the system reported serving: 07828, 07836
Nearby utilities
- Mt Olive Villages Water Mount Olive · same area · PFAS above limit
- New Jersey American Water – ITC Mount Olive · same area · PFAS above limit
- Netcong Water Dept Netcong · 3 mi · PFAS above limit
- Stanhope Water Dept Stanhope · 4 mi · PFAS above limit
- Roxbury Township Water Dept-Shore Roxbury · 5 mi · PFAS above limit
- Washington Township Municipal Utilities Authority – Hager Washington · 6 mi · PFAS above limit
Questions
Is Mount Olive Township W D Main Water System water safe to drink?
Mount Olive Township W D Main Water System had 2 health-based violations since 2016, all since resolved. EPA testing found PFAS above the 2024 federal limits, which systems must meet by 2029. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Mount Olive Township W D Main Water System water have PFAS?
Yes. EPA's 2023–2025 testing of Mount Olive Township W D Main Water System found 4 PFAS at least once. The highest entry-point averages were above the federal limit for PFOA and PFOS: PFOA 6.2 ppt, PFOS 4.85 ppt (limit 4 ppt for PFOA and PFOS, 10 ppt for the others).
What is the lead level in Mount Olive Township W D Main Water System water?
The most recent 90th-percentile lead result for Mount Olive Township W D Main Water System is 0 ppb, for the period ending Jun 2026. The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for NJ1427005: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID NJ1427005).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Mount Olive Township W D Main Water System at (973) 584-7086, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.