Onancock, VA 23417

2 water systems • 1,695 residents

Poor water quality - filtration recommended

D

Score: 38/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

25

Contaminants Detected

185

Violations on Record

24

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count0 / 25
Violation History13 / 25
Contaminant Severity10 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score38%

38 / 100 points

Recommended Water Filters

  • ✓Reverse Osmosis or Ion Exchange Filter
  • ✓Ultraviolet (UV) Purification
  • ✓Whole Home Carbon Filter System
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Onancock vs VA & National Average

Detected Contaminants

25 contaminants detected across water systems serving this ZIP code

ContaminantCategory
Nitrate-NitriteAgricultural
Coliform (TCR)Microorganism
Revised Total Coliform RuleMicroorganism
1,1,1-TrichloroethaneOther
1,1,2-TrichloroethaneOther
1,2-DichloropropaneOther
Consumer Confidence RuleOther
DICHLOROMETHANEOther
1,1-DichloroethyleneVolatile Organic
1,2-DichloroethaneVolatile Organic
1,2,4-TrichlorobenzeneVolatile Organic
BenzeneVolatile Organic
Carbon tetrachlorideVolatile Organic
CHLOROBENZENEVolatile Organic
cis-1,2-DichloroethyleneVolatile Organic
EthylbenzeneVolatile Organic
o-DichlorobenzeneVolatile Organic
p-DichlorobenzeneVolatile Organic
StyreneVolatile Organic
TetrachloroethyleneVolatile Organic
TolueneVolatile Organic
trans-1,2-DichloroethyleneVolatile Organic
TrichloroethyleneVolatile Organic
Vinyl chlorideVolatile Organic
Xylenes, TotalVolatile Organic

Water System Information

Systems Serving This ZIP:
ROLLING ACRES SUBDIVISION, ONANCOCK, TOWN OF
Population Served:
1,695
Systems With Violations:
2 of 2
Major Violations:
116
Enforcement Actions:
184

Nearby Areas

23441

Tasley • 4.6 mi away

D

23423

Quinby • 10.4 mi away

D

23421

Parksley • 11.9 mi away

D

23440

Tangier • 16.3 mi away

F

23337

Wallops Island • 20.9 mi away

D

21817

Crisfield • 21.5 mi away

A

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.