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2026 Rankings

Lancaster County, Pennsylvania Home Safety Rankings - 42 ZIPs

Explore rankings under Home Safety Score model 4.0.0. Only ZIPs with all four required inputs are ranked; missing evidence is not imputed or reweighted.

Lancaster County, Pennsylvania (Pennsylvania) includes 42 tracked ZIP codes and 42 mapped community water systems; confirm service for a specific address. Below are the water quality rankings for metro ZIPs with all required inputs.

Average Home Safety Grade: D (47/100)

Grade	ZIP Codes	%
A	0	0%
B	0	0%
C	2	10%
D	16	80%
F	2	10%

Top 10 ZIP Codes by Home Safety Score

Rank	ZIP	City	Score	Grade
1	17508	Brownstown	64	C
2	19540	Mohnton	62	C
3	17547	Marietta	53	D
4	17078	Palmyra	50	D
5	17520	East Petersburg	47	D
6	17538	Landisville	47	D
7	17551	Millersville	47	D
8	17569	Reinholds	47	D
9	17578	Stevens	47	D
10	17512	Columbia	46	D

10 Riskiest ZIP Codes

Rank	ZIP	City	Score	Grade	Risk Factor
1	17545	Manheim	35	F	Lead above EPA action level
2	17522	Ephrata	39	F	31 violations
3	17540	Leola	41	D	22 violations
4	17067	Myerstown	42	D	22 violations
5	17557	New Holland	43	D	19 violations
6	17552	Mount Joy	44	D	17 violations
7	17572	Ronks	45	D	13 violations
8	17501	Akron	45	D	15 violations
9	17554	Mountville	46	D	11 violations
10	17517	Denver	46	D	12 violations

Most Common Contaminant Violations

Contaminant	Violations	ZIPs Affected
Groundwater Rule	82	24
Haloacetic Acids (HAA5)	52	23
Consumer Confidence Report Rule	45	19
Total Trihalomethanes (TTHM)	35	18
E. coli	25	10
Fecal Coliform	22	13
Surface Water Treatment Rule	19	12
Lead	16	10

Lead Risk

Average of reported 90th-percentile lead results: 0.0206 mg/L (exceeds EPA action level)
3 of 27 ZIP codes with known status exceed EPA lead action level
23% of housing built before 1950
40% of housing built before 1970

Cities in This Metro

Campbelltown, PA — 1 ZIP code
Grantville, PA — 1 ZIP code
Myerstown, PA — 1 ZIP code
Palmyra, PA — 1 ZIP code
Akron, PA — 1 ZIP code
Bainbridge, PA — 1 ZIP code
Blue Ball, PA — 1 ZIP code
Brownstown, PA — 1 ZIP code
Christiana, PA — 1 ZIP code
Columbia, PA — 1 ZIP code
Conestoga, PA — 1 ZIP code
Denver, PA — 1 ZIP code
East Earl, PA — 1 ZIP code
East Petersburg, PA — 1 ZIP code
Ephrata, PA — 1 ZIP code
Gordonville, PA — 1 ZIP code
Intercourse, PA — 1 ZIP code
Landisville, PA — 1 ZIP code
Leola, PA — 1 ZIP code
Manheim, PA — 1 ZIP code
Marietta, PA — 1 ZIP code
Martindale, PA — 1 ZIP code
Maytown, PA — 1 ZIP code
Millersville, PA — 1 ZIP code
Mount Joy, PA — 1 ZIP code
Mountville, PA — 1 ZIP code
New Holland, PA — 1 ZIP code
New Providence, PA — 1 ZIP code
Paradise, PA — 1 ZIP code
Pequea, PA — 1 ZIP code

...and 12 more cities

All 42 ZIP Codes Ranked

View complete ranking

Rank	ZIP	City	Score	Grade	Violations
1	17508	Brownstown	64	C	5
2	19540	Mohnton	62	C	12
3	17547	Marietta	53	D	40
4	17078	Palmyra	50	D	0
5	17520	East Petersburg	47	D	6
6	17538	Landisville	47	D	8
7	17551	Millersville	47	D	8
8	17569	Reinholds	47	D	7
9	17578	Stevens	47	D	8
10	17512	Columbia	46	D	10
11	17517	Denver	46	D	12
12	17554	Mountville	46	D	11
13	17501	Akron	45	D	15
14	17572	Ronks	45	D	13
15	17552	Mount Joy	44	D	17
16	17557	New Holland	43	D	19
17	17067	Myerstown	42	D	22
18	17540	Leola	41	D	22
19	17522	Ephrata	39	F	31
20	17545	Manheim	35	F	43
21	17010	Campbelltown	—	—	—
22	17028	Grantville	—	—	—
23	17502	Bainbridge	—	—	8
24	17506	Blue Ball	—	—	—
25	17509	Christiana	—	—	16
26	17516	Conestoga	—	—	3
27	17519	East Earl	—	—	6
28	17529	Gordonville	—	—	20
29	17550	Maytown	—	—	—
30	17560	New Providence	—	—	9
31	17562	Paradise	—	—	15
32	17565	Pequea	—	—	—
33	17566	Quarryville	—	—	9
34	17579	Strasburg	—	—	4
35	17581	Terre Hill	—	—	—
36	19501	Adamstown	—	—	5
37	19544	Mount Aetna	—	—	—

Data Sources

Water quality: EPA SDWIS
Housing: U.S. Census Bureau American Community Survey
Flood: FEMA NFIP
Flood scope: historical NFIP claim records and claim-rated-zone evidence; this is not current property-map coverage.

Reporting periods vary by source; the page metadata identifies this materialization.

Methodology
Model 4.0.0 averages SDWIS water compliance and UCMR5 PFAS within drinking water, then averages drinking water, county radon, and annual AQI as three equal domains. All four inputs are required. Score methodology → · Rankings methodology →

Disclaimer: Scores are based on EPA SDWIS reported data and are not a guarantee of current water safety. Water quality can change. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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How to cite this page

APA

ZipCheckup. (2026). Lancaster County, Pennsylvania Home Safety Rankings - 42 ZIPs. https://zipcheckup.com/rankings/metro/lancaster-pennsylvania/

BibTeX

@misc{zipcheckup-rankings-metro-lancaster-pennsylvania,
  author = {{ZipCheckup}},
  title  = {{Lancaster County, Pennsylvania Home Safety Rankings - 42 ZIPs}},
  year   = {2026},
  url    = {https://zipcheckup.com/rankings/metro/lancaster-pennsylvania/}
}

Page version: October 2026.

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