Delaware Township Mua
What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.
- Serves
- 500 people
- Connections
- 173
- Water source
- Groundwater
- Based in
- Delaware Twp., NJ
- County
- Hunterdon
- Owner
- Local government
The ZIP code it serves
The short answer
Nothing in EPA’s and CDC’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 2 health-based violations since 2016.
What was found
Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 2.5 ppm, for the period ending Dec. 31, 1993. None since is on file, so it is not counted as a current finding.
Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM) and arsenic: New Jersey’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2020 to 2023, with EPA’s 2012 to 2019 file for earlier years.
Chromium (total), fluoride and uranium: EPA’s compliance monitoring file, samples taken from April 2, 2012 to March 20, 2018. Newer results are in the utility’s annual water quality report.
Below EPA’s limits3
Nitrate
Comes from the source
4.4ppm
Highest yearly average, 2020 to 2023
Averaged by year, the highest was 4.4 ppm, in 2023, below EPA’s legal limit of 10 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 4.3 ppm, in 2017.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Haloacetic acids (HAA5)
Forms or is added in treatment
1.8ppb
Highest yearly average, 2020 to 2023
2023: not found
Averaged by year, the highest was 1.8 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2023, the latest year on file, it wasn’t found. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 6.0 ppb, in 2013.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
2.0ppb
Highest yearly average, 2020 to 2023
2023 average: 1.9 ppb
Averaged by year, the highest was 2.0 ppb, in 2020, below EPA’s legal limit of 80 ppb. In 2023, the latest year on file, it averaged 1.9 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 3.4 ppb, in 2018.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
5 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Chromium (total)
- Fluoride
- Lead
- Uranium
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Lead and Copper Rule | Water chemistry used to keep pipes from corroding was outside the required range.EPA: WQP Entry Point/Tap Treatment Technique Non-Compliance | July 1, 2020 to Dec. 31, 2020 | — | Resolved |
| Lead and Copper Rule | Water chemistry used to keep pipes from corroding was outside the required range.EPA: WQP Entry Point/Tap Treatment Technique Non-Compliance | Jan. 1, 2020 to June 30, 2020 | — | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 13 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM) and arsenic results here are New Jersey’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Chromium (total), fluoride and uranium come from EPA’s file alone, which ends in 2019. Delaware Township Mua’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for New Jersey cover 2020 to 2023; EPA’s compliance samples are from April 2, 2012 to March 20, 2018.
Testing your own tap
The 3 labs New Jersey certifies closest to the area Delaware Township Mua serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Pace Analytical Services, LLC - Ewing
Ewing, NJ · about 14 miles
New Jersey Department of Health
West Trenton, NJ · about 14 miles
Sadat Associates Inc.
Ewing, NJ · about 17 miles
Sources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- CDC Environmental Public Health Tracking Network, yearly averages New Jersey supplied to CDC, 2020 to 2023, read Oct. 8, 2026. TapBuff’s comparisons with EPA’s limits are its own, not CDC’s or New Jersey’s.
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: NJDEP Office of Quality Assurance, certified drinking water labs, read Oct. 11, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID NJ1007001. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and CDC’s records for this utility. They don’t cover everything, which is why the next step matters.Every contaminant TapBuff tracks
- Get the utility’s own reportDelaware Township Mua must send you a water quality report every year. It covers contaminants this page does not show, and has newer results than EPA’s national file for the ones here that come from it.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded