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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
EPA records for MANASQUAN WATER DEPARTME • Updated October 2026
Grade B — based on EPA compliance records, lead testing and PFAS monitoring
MANASQUAN WATER DEPARTME is in good standing with EPA, with only minor deductions for monitoring paperwork, low-level PFAS or historical readings near a limit.
Yes — by EPA's records Mansquan, NJ tap water is safe to drink and earns a B. The grade rests on 1 health-based EPA violation in the last five years. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
Yes — by EPA's records Mansquan, NJ tap water is safe to drink and earns a B. The grade rests on 1 health-based EPA violation in the last five years. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
MANASQUAN WATER DEPARTME's most recent Lead and Copper Rule result (2025-01-01 to 2025-12-31) was 0.63 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for MANASQUAN WATER DEPARTME (2025-06-04 to 2025-12-30) were at or above the reporting limit of roughly 3–5 ppt.
MANASQUAN WATER DEPARTME has 15 violations on file since 2016: 1 health-based in the last five years and 3 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
MANASQUAN WATER DEPARTME reports groundwater as its primary source and serves about 14,000 people (EPA PWSID NJ1327001).
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MANASQUAN WATER DEPARTME has 1 health-based EPA violation in the last five years.
See the filters matched to Mansquan's EPA results → — which certification actually removes what was found here, and what it does not touch.
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MANASQUAN WATER DEPARTME · SDWIS records since 2016 · 5-year window starts 2021-10-16
EPA records 1 health-based violation for this system in the last five years, all of which are marked resolved or archived. Health-based violations mean a contaminant exceeded its Maximum Contaminant Level (MCL) or a required treatment step was not met.
| Violation | Category | Compliance period | Status |
|---|---|---|---|
| WQP Entry Point/Tap Treatment Technique Non-ComplianceLead and Copper Rule | Treatment technique | 2022-07-01 → 2022-12-31 | Resolvedreturned 2022-12-31 |
| Lead Consumer NoticeLead and Copper Rule | Monitoring & reporting | 2025-12-30 | Resolvedreturned 2026-03-19 |
| Consumer Confidence Report Inadequate ReportingConsumer Confidence Rule | Other | 2025-10-01 | Resolvedreturned 2025-12-02 |
| Consumer Confidence Report Complete Failure to ReportConsumer Confidence Rule | Other | 2025-07-01 | Resolvedreturned 2026-03-19 |
| Lead Consumer NoticeLead and Copper Rule | Monitoring & reporting | 2025-04-01 | Resolvedreturned 2025-05-05 |
| Water Quality Parameter M/RLead and Copper Rule | Monitoring & reporting | 2023-07-01 → 2023-12-31 | Resolvedreturned 2023-12-31 |
| Consumer Confidence Report Complete Failure to ReportConsumer Confidence Rule | Other | 2021-07-01 | Resolvedreturned 2021-08-23 |
| Water Quality Parameter M/RLead and Copper Rule | Monitoring & reporting | 2021-01-01 → 2021-06-30 | Resolvedreturned 2021-03-02 |
| Water Quality Parameter M/RLead and Copper Rule | Monitoring & reporting | 2020-01-01 → 2020-06-30 | Resolvedreturned 2020-06-30 |
| Lead Consumer NoticeLead and Copper Rule | Monitoring & reporting | 2019-09-29 | Resolvedreturned 2019-10-18 |
| Water Quality Parameter M/RLead and Copper Rule | Monitoring & reporting | 2019-07-01 → 2019-12-31 | Resolvedreturned 2019-10-08 |
| Consumer Confidence Report Complete Failure to ReportConsumer Confidence Rule | Other | 2019-07-01 | Resolvedreturned 2019-08-02 |
| Water Quality Parameter M/RLead and Copper Rule | Monitoring & reporting | 2019-01-01 → 2019-06-30 | Resolvedreturned 2019-04-29 |
| Monitoring and Reporting (DBP)Chlorine | Monitoring & reporting | 2016-04-01 → 2016-06-30 | Archived |
| Monitoring, Routine Minor (TCR)Coliform (TCR) | Monitoring & reporting | 2016-03-01 → 2016-03-31 | Resolvedreturned 2016-03-07 |
Source: ECHO SDWA bulk download (SDWA_VIOLATIONS_ENFORCEMENT.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-06)
EPA Lead and Copper Rule 90th-percentile results reported by MANASQUAN WATER DEPARTME
Well below the 15 ppb action level. In the most recent monitoring period on file (2025-01-01 to 2025-12-31), 90% of the homes MANASQUAN WATER DEPARTME sampled had lead at or below 0.63 ppb.
EPA's action level is 15 ppb (dropping to 10 ppb under the 2024 Lead and Copper Rule Improvements). There is no safe level of lead; the 90th-percentile figure describes the system, not your tap — homes with lead service lines or pre-1986 plumbing can be higher.
| Monitoring period | Lead 90th percentile | vs 15 ppb action level |
|---|---|---|
| 2025-01-01 → 2025-12-31 | 0.63 ppb | Well below the 15 ppb action level |
| 2024-07-01 → 2024-12-31 | 2.1 ppb | Well below the 15 ppb action level |
| 2024-01-01 → 2024-06-30 | 1.01 ppb | Well below the 15 ppb action level |
| 2023-07-01 → 2023-12-31 | 2 ppb | Well below the 15 ppb action level |
| 2023-01-01 → 2023-06-30 | 1.1 ppb | Well below the 15 ppb action level |
| 2022-01-01 → 2022-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2021-01-01 → 2021-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2020-01-01 → 2020-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2019-07-01 → 2019-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2019-01-01 → 2019-06-30 | 0 ppb | Well below the 15 ppb action level |
| 2018-07-01 → 2018-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2015-01-01 → 2017-12-31 | 0 ppb | Well below the 15 ppb action level |
Source: ECHO SDWA bulk download (SDWA_LCR_SAMPLES.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-06)
EPA UCMR5 monitoring, 2025-06-04 to 2025-12-30 · 58 PFAS results at entry points to the distribution system
No PFAS detected. None of the 58 UCMR5 PFAS results for MANASQUAN WATER DEPARTME were at or above the method reporting limit. Reporting limits are about 3–5 ppt, so “not detected” means below that threshold — not proven zero.
| Compound | Detects / samples | Max (ppt) | Reporting limit | EPA MCL |
|---|---|---|---|---|
| PFOA | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFOS | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFHxS | 0 / 2 | < 3 | 3 ppt | 10 ppt |
| PFNA | 0 / 2 | < 4 | 4 ppt | 10 ppt |
| HFPO-DA | 0 / 2 | < 5 | 5 ppt | 10 ppt |
| PFBS | 0 / 2 | < 3 | 3 ppt | hazard index only |
“< 4 ppt” means below the laboratory reporting limit, not zero. ppt = parts per trillion (ng/L). Results are for finished water leaving the treatment plant.
What PFAS are and how to remove them →
Source: UCMR5 occurrence data, EPA Data Summary July 2026 (UCMR5_All.txt)
EPA Six-Year Review 4 compliance samples for MANASQUAN WATER DEPARTME · finished water only · dated data, released 2024
These are the regulated-contaminant samples MANASQUAN WATER DEPARTME reported to its state between 2012 and 2019 — the most recent nationwide sample-level dataset EPA has published. Every scored contaminant stayed within its Maximum Contaminant Level (MCL) and averaged below 80% of the limit. Treat this as history, not today's tap water.
| Contaminant | Samples | Average | Max | EPA limit | Status |
|---|---|---|---|---|---|
| Arsenic | 30 detects | 0 µg/L | ND | 10 µg/LMCL | Not detected |
| Nitrate (as N) | 80 detects | 0 mg/L | ND | 10 mg/LMCL | Not detected |
| Fluoride | 40 detects | 0 mg/L | ND | 4 mg/LMCL | Not detected |
| Chromium (total) | 30 detects | 0 µg/L | ND | 100 µg/LMCL | Not detected |
| Radium-226/228 | 3 | 3.423 pCi/L | 4.98 pCi/L | 5 pCi/LMCL | Within MCL |
| Total trihalomethanes (TTHM) | 14 | 16.099 µg/L | 37.06 µg/L | 80 µg/LMCL (LRAA) | Within MCL |
| Haloacetic acids (HAA5) | 14 | 6.23 µg/L | 16.69 µg/L | 60 µg/LMCL (LRAA) | Within MCL |
| Lead (tap samples) | 1620 detects | 0 µg/L | ND | 15 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
| Copper (tap samples) | 16519 detects | 6.909 µg/L | 100 µg/L | 1300 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
Averages count non-detects as zero. TTHM and HAA5 limits are locational running annual averages, so a single high sample is not a violation — we grade those on the average only. Lead and copper rows are individual tap samples and are shown for context; compliance (and our score) uses the 90th-percentile result above. LRAA = locational running annual average; ND = not detected.
Source: SYR4 Six-Year Review compliance monitoring data 2012–2019 (released 2024-03)
A point-of-use (under-sink) system typically runs $200-$600 installed; whole-house treatment $1,000-$3,000+ depending on flow and what has to come out. Tell us where you are and a certified water-treatment installer serving Mansquan will follow up - no obligation.
Groundwater systems draw from wells; naturally occurring arsenic, nitrate, radium and uranium are the readings to watch, along with PFAS near industrial or military sites.
How to test your tap water and the treatment options that actually fit Mansquan homes
The most reliable way to know what is actually coming out of your tap is a certified mail-in lab test. City-wide EPA data (like the report above) reflects the water leaving the treatment plant, but contaminants such as lead and copper can be picked up from your own service line and household plumbing — so the water at your Mansquan faucet can differ from the system average. A state-certified lab measures dozens of contaminants at once with results you can trust; you can also find one near you through the EPA's certified-lab list at epa.gov/dwlabcert. Hardware-store test strips are cheaper and instant, but they only screen for a few basics (chlorine, hardness, pH, and a rough lead pass/fail) and are far less accurate — treat them as a first look, not a diagnosis.
Match the treatment to what your test finds. Reverse osmosis (RO) removes the widest range of contaminants — lead, arsenic, nitrate, PFAS, and dissolved solids — which makes an under-sink reverse osmosis system the most thorough choice for Mansquan households with heavy-metal or PFAS concerns. If your main issue is taste, odor, or chlorine, an activated carbon filter (pitcher, faucet, or under-sink) is simpler and cheaper and handles chlorine and many organic compounds well, though carbon alone does not remove arsenic, nitrate, or most PFAS. NSF-certified pitchers rated for lead reduction are the easiest way to start today while you decide on a permanent setup.
We may earn a commission from testing kits and filters purchased through these links, at no extra cost to you.
What Mansquan residents measured at their own tap. All reader results →
Reader submissions are unverified and shown separately from EPA data. They reflect one tap on one day, not the utility's compliance record.
No reader results for Mansquan yet - yours would be the first. A hardness or TDS number from a $10 strip kit is enough to start the map.
Help build the first reader-sourced water map. Enter whatever your test strip, TDS pen or lab report shows - one number is enough.
Mansquan ranks #42 of 155 graded New Jersey cities.
Yes — by EPA's records Mansquan, NJ tap water is safe to drink and earns a B. The grade rests on 1 health-based EPA violation in the last five years. Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
MANASQUAN WATER DEPARTME's most recent Lead and Copper Rule result (2025-01-01 to 2025-12-31) was 0.63 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for MANASQUAN WATER DEPARTME (2025-06-04 to 2025-12-30) were at or above the reporting limit of roughly 3–5 ppt.
MANASQUAN WATER DEPARTME has 15 violations on file since 2016: 1 health-based in the last five years and 3 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
MANASQUAN WATER DEPARTME reports groundwater as its primary source and serves about 14,000 people (EPA PWSID NJ1327001).
We recommend one. Check which contaminant the violations involved (table above) and choose a filter certified for it.
MANASQUAN WATER DEPARTME has 1 health-based EPA violation in the last five years.
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