Green Grove Trailer CT
What EPA’s and Pennsylvania’s records show in this utility’s water: PFAS; nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.
- Serves
- 75 people
- Connections
- 30
- Water source
- Groundwater
- Based in
- Greencastle, PA
- County
- Franklin
- Owner
- Private
The ZIP code it serves
The short answer
1 result is above EPA’s legal limit, 2 more are above EPA’s new limit, which takes effect in 2029, and 1 more is above the health goal. The worst: Nitrate, above the legal limit. 3 health-based violations since 2016.
What handles itWhat was found
PFAS: Pennsylvania’s own results under its PFAS rule, entry point samples taken from Jan. 15, 2025 to Sept. 15, 2026.
Lead and copper: EPA SDWIS monitoring periods ending 1993 to 1996.
Nitrate, total trihalomethanes (TTHM), arsenic, chromium (total), fluoride, haloacetic acids (HAA5) and uranium: Pennsylvania’s own results, samples taken from Jan. 14, 2020 to July 21, 2026, with EPA’s 2012 to 2019 file for earlier years.
PFAS: PFOS, PFOA, PFHxS, PFNA and PFBS were found, of the six PFAS in EPA’s 2024 drinking water rule; their results are below.
EPA’s 2024 PFAS rule, compound by compound
| PFAS | EPA’s limit | Result |
|---|---|---|
| PFOA | 4.0 ppt | Above EPA’s new limit (2029)4.9 ppt highest, found in 3 of 7 samples. Details |
| PFOS | 4.0 ppt | Above EPA’s new limit (2029)6.9 ppt highest, found in 7 of 7 samples. Details |
| PFHxS | 10 ppt | Below EPA’s limits9.4 ppt highest, found in 7 of 7 samples. Details |
| PFNA | 10 ppt | Below EPA’s limits1.9 ppt highest, found in 1 of 7 samples. Details |
| HFPO-DA (GenX) | 10 ppt | Not foundNot found in any of 7 samples |
| PFBS | Index only | Below EPA’s limits4.2 ppt highest, found in 5 of 7 samples. Details |
| Results from Pennsylvania’s own PFAS monitoring, samples where water enters the pipes; each compound’s card has its four-quarter averages, the way limits are judged. The limits are EPA’s 2024 rule, with compliance due from 2029; EPA has since proposed changes to some of them, explained on each compound’s page. Pennsylvania’s own limits for PFOA and PFOS are in force now. PFBS has no limit of its own and counts only toward EPA’s Hazard Index, which TapBuff works out only from UCMR 5’s averages, so it isn’t given here. | ||
About PFAS certifications
NSF’s PFAS claims are tested to below 20 ppt. EPA’s limit is 4.0 ppt, and EPA says no certification yet shows a filter reaching its levels.
Above the legal limit1
Nitrate
Comes from the source
17.6ppm
Highest sample; found in 29 of 29
2026 average: 6.6 ppm
In 2022, three samples were above EPA’s legal limit of 10 ppm, the highest 17.6 ppm. The next sample at the same point, within 30 days, kept the average above the limit for one; two have no follow-up sample on file within 30 days. In 2026, the latest year on file, its three samples averaged 6.6 ppm. EPA recorded a violation for nitrate at this utility in 2022. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 7.1 ppm, in 2013.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Above EPA’s new limit, which takes effect in 20292
PFOS
Comes from the source
6.9ppt
Highest sample, Feb. 24, 2026; found in 7 of 7
2026 average: 5.5 ppt
The highest sample was 6.9 ppt, above EPA’s new limit of 4.0 ppt, which takes effect in 2029. EPA’s health goal is zero. Compliance will be judged on a running annual average, not one sample. Averaged over four quarters at one entry point, the way both Pennsylvania’s limit and EPA’s are judged, the highest was 5.2 ppt, for the year to Sept. 30, 2026: below Pennsylvania’s limit of 18 ppt and above EPA’s new limit of 4.0 ppt. In 2026, the latest year on file, its three samples averaged 5.5 ppt.
What handles it
- NSF/ANSI 53 look for “PFOS Reduction”
- NSF/ANSI 58 look for “Perfluorooctane Sulfonate (PFOS)”
PFOA
Comes from the source
4.9ppt
Highest sample, Sept. 15, 2026; found in 3 of 7
2026 average: 2.8 ppt
The highest sample was 4.9 ppt, above EPA’s new limit of 4.0 ppt, which takes effect in 2029. EPA’s health goal is zero. Compliance will be judged on a running annual average, not one sample. Averaged over four quarters at one entry point, the way both Pennsylvania’s limit and EPA’s are judged, the highest was 2.1 ppt, for the year to Sept. 30, 2026: below Pennsylvania’s limit of 14 ppt and below EPA’s new limit of 4.0 ppt. In 2026, the latest year on file, its three samples averaged 2.8 ppt.
What handles it
- NSF/ANSI 53 look for “PFOA Reduction”
- NSF/ANSI 58 look for “Perfluorooctanoic Acid (PFOA)”
Above the health goal1
Lead
Comes from pipes, often your own
4.0ppb
90th percentile, 1996
In the latest period, 9 in 10 homes sampled were at or below 4.0 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.
What handles it
- NSF/ANSI 53 look for “Lead Reduction”
- NSF/ANSI 58 look for “Lead Reduction”
Below EPA’s limits4
PFHxS
Comes from the source
9.4ppt
Highest sample, April 23, 2025; found in 7 of 7
2026 average: 3.3 ppt
The highest sample was 9.4 ppt, below EPA’s new limit of 10 ppt, which takes effect in 2029. Averaged over four quarters at one entry point, the way EPA’s limit is judged, the highest was 6.1 ppt, for the year to Dec. 31, 2025: below EPA’s new limit of 10 ppt. In 2026, the latest year on file, its three samples averaged 3.3 ppt.
What handles it
- NSF/ANSI 53 look for “Total PFAS Reduction”
PFNA
Comes from the source
1.9ppt
Highest sample, Sept. 15, 2026; found in 1 of 7
2026 average: 0.62 ppt
The highest sample was 1.9 ppt, below EPA’s new limit of 10 ppt, which takes effect in 2029. Averaged over four quarters at one entry point, the way EPA’s limit is judged, the highest was 0.47 ppt, for the year to Sept. 30, 2026: below EPA’s new limit of 10 ppt. In 2026, the latest year on file, its three samples averaged 0.62 ppt.
What handles it
- NSF/ANSI 53 look for “Total PFAS Reduction”
Total trihalomethanes (TTHM)
Forms or is added in treatment
4.9ppb
Highest yearly average, 2022 to 2025
2025, one sample: 3.7 ppb
Averaged by year, the highest was 4.9 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, its one sample was 3.7 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.7 ppb, in 2012.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
PFBS
Comes from the source
4.2ppt
Highest sample, April 23, 2025; found in 5 of 7
2026 average: 1.5 ppt
The highest sample was 4.2 ppt, below EPA’s hazard index benchmark of 2,000 ppt. PFBS has no legal limit or health goal of its own. In 2026, the latest year on file, its three samples averaged 1.5 ppt.
What handles it
- NSF/ANSI 53 look for “Total PFAS Reduction”
6 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
From routine monitoring
- Arsenic
- Chromium (total)
- Fluoride
- Haloacetic acids (HAA5)
- Uranium
PFAS, from Pennsylvania’s own monitoring
- HFPO-DA (GenX)
What handles it
A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”
- NSF/ANSI 53
Claims: Nitrate/Nitrite (30 ppm challenge), PFOS Reduction, PFOA Reduction, Lead Reduction
For: Nitrate, PFOS, PFOA, Lead
Other certifiers’ wording: Total PFAS Reduction; Perfluorooctane Sulfonate (PFOS); Perfluorooctanoic Acid (PFOA)
- NSF/ANSI 58
Claims: Nitrate/Nitrite Reduction, Perfluorooctane Sulfonate (PFOS), Perfluorooctanoic Acid (PFOA), Lead Reduction
For: Nitrate, PFOS, PFOA, Lead
Other certifiers’ wording: Nitrate
At the tap, or for the whole house?
Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.
Filters with those claims on a certifier’s listing
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Nitrate, PFOS, PFOA, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Nitrate, PFOS, PFOA, Lead
Culligan 10-Cup Pitcher with ZeroWater Technology (ZEROP10)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Nitrate, PFOS, PFOA, Lead
ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOS, PFOA, Lead
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS, PFOA, Lead
The best reverse osmosis systems, ranked
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Revised Total Coliform Rule | E. coli was confirmed in the water system.EPA: Maximum Contaminant Level Violation, E. coli (RTCR) | July 1, 2025 to July 31, 2025 | — | Resolved |
| Nitrate | A sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single Sample | Oct. 1, 2022 to Dec. 31, 2022 | 17.6 MG/L | Resolved |
| Nitrate | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | July 1, 2022 to Sept. 30, 2022 | 15.3 MG/L | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 19 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Nitrate, total trihalomethanes (TTHM), arsenic, chromium (total), fluoride, haloacetic acids (HAA5) and uranium results here are Pennsylvania’s own from 2020 on, with EPA’s national file for 2012 to 2019. Green Grove Trailer CT’s own annual report, which it must send you every year, has 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; Pennsylvania’s results run from Jan. 14, 2020 to July 21, 2026; Pennsylvania’s PFAS results run from Jan. 15, 2025 to Sept. 15, 2026.
Testing your own tap
The 3 labs Pennsylvania certifies closest to the area Green Grove Trailer CT serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
SPL-Chambersburg
Chambersburg, PA · about 14 miles
Certified for bacteria
Laboratory, Analytical and Biological Services, Inc
New Oxford, PA · about 37 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Pace Analytical Services, LLC - Altoona, PA
Altoona, PA · about 60 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Penn State Agricultural Analytical Services Laboratory: Drinking water test kits from many county Extension offices, mailed back to the lab overnight with payment. Packages cover bacteria and basic chemistry, with add-ons for nitrate, metals, lead, and mining or gas drilling concerns. The standard package of bacteria, pH and total dissolved solids is $60, or $70 with nitrate; bacteria alone is $40, nitrate $15 and lead $25. Drinking Water Testing, Penn State Agricultural Analytical Services Lab.
All 108 certified labs for PennsylvaniaSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- Pennsylvania Department of Environmental Protection, Drinking Water Reporting System, PFAS results read Oct. 17, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Pennsylvania Department of Environmental Protection, Drinking Water Reporting System, results from Jan. 2, 2020 to Oct. 8, 2026, read Oct. 17, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: Pennsylvania DEP Laboratory Accreditation Program, accredited labs for drinking water, 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 PA7280010. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on the 4 results above a lineWhat each one does to health, where it comes from, and the certification claim that addresses it.Start with Nitrate
- Get the utility’s own reportGreen Grove Trailer CT must send you a water quality report every year. It covers contaminants this page does not show.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
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs