Water Quality in 18101 — Allentown, PA
EPA data for LCA ALLENTOWN DIVISION
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 18101 in Allentown, Pennsylvania is served by LCA ALLENTOWN DIVISION (EPA ID: PA3390024). This system provides water to approximately 118,000 people from surface water sources.
There are 18 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| July 11, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| September 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| September 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| September 1, 2024 | E. coli | Monitoring | Resolved |
| September 1, 2024 | E. coli | Monitoring | Resolved |
| September 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| September 1, 2024 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| September 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| September 1, 2024 | E. coli | Monitoring | Resolved |
| September 1, 2024 | E. coli | Monitoring | Unresolved |
| September 1, 2024 | E. coli | Monitoring | Resolved |
| September 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| September 1, 2024 | Revised Total Coliform Rule | Monitoring | Unresolved |
| September 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead | Inorganic | 12 | No |
| Copper | Inorganic | 12 | No |
| Contaminant 0700 | Other | 7 | No |
| E. coli | Microbiological | 5 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 4 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 4 | No |
| Consumer Confidence Report Rule | Reporting | 4 | No |
| Revised Total Coliform Rule | Microbiological | 3 | No |
| Stage 1 DBP Rule | Treatment Technique | 1 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| LCA ALLENTOWN DIVISION | PA3390024 | 118,000 | Surface water |
| LCA WLSA CENTRAL DIVISION | PA3390073 | 47,693 | Surface water |
| SWT MAIN SYSTEM | PA3390065 | 14,500 | Surface water |
| SALISBURY TWP WATER SYSTEM | PA3390062 | 8,522 | Surface water |
| LCA NORTH WHITEHALL DIVISION | PA3390055 | 2,910 | Surface water |
What You Can Do
- Review your annual Consumer Confidence Report (CCR) — Your utility publishes this each July
- Test your home’s water — Especially if you have older plumbing (pre-1986) that may contain lead
- Stay informed — Bookmark this page to check for updates on your water quality
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Pennsylvania
- 15068 (New Kensington)
- 15201 (Pittsburgh) — 76 violations
- 15501 (Somerset) — 25 violations
- 15601 (Greensburg) — 18 violations
- 15701 (Indiana) — 51 violations
- 15901 (Johnstown) — 208 violations
- 16001 (Butler) — 43 violations
- 16016 (Boyers) — 223 violations
- 16101 (New Castle) — 2 violations
- 16142 (New Wilmington) — 10 violations
- 16335 (Meadville) — 6 violations
- 16365 (Warren) — 23 violations
- 16401 (Albion) — 90 violations
- 16412 (Edinboro) — 109 violations
- 16501 (Erie) — 74 violations
- 16601 (Altoona) — 10 violations
- 16630 (Cresson) — 8 violations
- 16651 (Houtzdale) — 11 violations
- 16652 (Huntingdon) — 27 violations
- 16801 (State College) — 104 violations
Nearby Water Quality Reports
- 18015 (Bethlehem) — 5 mi — 16 violations
- 18049 (Emmaus) — 5 mi — 19 violations
- 18040 (Easton) — 16 mi — 18 violations
- 19601 (Reading) — 30 mi — 23 violations
- 19401 (Norristown) — 34 mi — 885 violations
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for LCA ALLENTOWN DIVISION (PA3390024) on EPA.gov.
Frequently Asked Questions
Is the tap water in 18101 safe to drink?
Based on EPA records, the water system serving ZIP code 18101 has only monitoring/reporting violations, which are procedural in nature. However, individual home conditions (old pipes, well water) can affect quality.
Where does 18101’s water come from?
The primary water source for this area is surface water. LCA ALLENTOWN DIVISION serves approximately 118,000 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 18101 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 18101. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 18101?
Radon zone data is not available for ZIP code 18101. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.