Is Greencastle, PA tap water safe?
The short answer
3 of the 7 utilities serving Greencastle have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Pennsylvania’s records: Heritage Hills Retirement Comm, State Line MHP and Green Grove Trailer CT.
Greencastle Area Water Auth, which serves the most people here, has 2 results above the health goal. The worst: Nitrate at 12 ppm, above the health goal. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Greencastle’s ZIP codes, from EPA’s estimates.
- Open report
Greencastle Area Water Auth
Pennsylvania · serves 5,500 people · about 130 in Greencastle
2 results above the health goal. The worst: Nitrate at 12 ppm, above the health goal.
No health-based violations since 2016
- Open report
Antrim Township Municipal Auth
Pennsylvania · serves 1,149 people · under 100 in Greencastle
3 results above the health goal. The worst: PFOS at 3.7 ppt, above the health goal.
No health-based violations since 2016
- Open report
Heritage Hills Retirement Comm
Pennsylvania · serves 57 people · under 100 in Greencastle
1 result above the action level. The worst: Lead at 63.5 ppb, above the action level.
No health-based violations since 2016
- Open report
Shangri la MHP
Pennsylvania · serves 86 people · under 100 in Greencastle
2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
State Line MHP
Pennsylvania · serves 65 people · under 100 in Greencastle
1 result above the action level and 2 results above EPA’s new limit, which takes effect in 2029. The worst: Lead at 15.9 ppb, above the action level.
No health-based violations since 2016
- Open report
Sunny Spot Apartments
Pennsylvania · serves 27 people · under 100 in Greencastle
1 result above the health goal. The worst: Uranium at 4.3 ppb, above the health goal.
No health-based violations since 2016
- Open report
Green Grove Trailer CT
Pennsylvania · serves 75 people · based in Greencastle
1 result above the legal limit, 2 results above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: Nitrate at 17.6 ppm, above the legal limit.
3 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Greencastle Area Water Auth’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Nitrate, 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, 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, Lead
Water testing near Greencastle
The 3 labs Pennsylvania certifies closest to Greencastle, 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 PennsylvaniaZIP codes in Greencastle
Which ZIP codes are in Greencastle: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Pennsylvania DEP Laboratory Accreditation Program, accredited labs for drinking water; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Greencastle
Other towns in Franklin County with a page of their own.
What to do next
- Read Greencastle Area Water Auth’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for NitrateRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water