Water Quality in Mohnton, PA: 2 Violations - Grade F
Grade F · Score 38/100 · 4 water systems · Updated 2026-07-18
Mohnton's water has serious compliance issues. Independent testing and filtration are strongly recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-07-18
Reviewing EPA compliance files for Mohnton, PA surfaces 2 documented water violations - each categorized by violation type and linked to the utility that drew the federal citation.
Water Quality by ZIP Code in Mohnton
Mohnton is covered by a single ZIP code, so one water-quality profile applies citywide. See the contaminant data below.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 19540 | F | 38 | 2 | 0 | View report → |
Violation Trend
EPA violations recorded for water systems serving Mohnton.
Water Quality Overview
Mohnton, Pennsylvania receives a water quality grade of F with an overall score of 38 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 4 water systems serving Mohnton have accumulated 2 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP code serving approximately 11,705 people.
What Grade F Means
A grade of F indicates serious compliance issues. Mohnton's water systems have substantial violations. Residents should strongly consider independent water testing and appropriate filtration.
Lead Levels
The average 90th percentile lead level across Mohnton water systems is 0.0270 mg/L - this exceeds the EPA action level of 0.015 mg/L. 1 ZIP code exceed the EPA lead action level.
With 62% of homes built before 1986, Mohnton has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Mohnton is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Mohnton
Mohnton is served by 4 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 11,705 people across 1 ZIP code.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Mohnton. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Mohnton
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Mohnton Water Systems
The following contaminants have been detected or caused violations across Mohnton's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Mohnton:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2022 | 1 | 1 |
| 2025 | 2 | 2 |
Violations have increased from 1 in 2022 to 2 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Mohnton. Recent actions:
| Date | Action Type |
|---|---|
| 2026-02-03 | State Informal Action |
| 2026-02-03 | State Order Extension |
| 2026-01-30 | State Informal Action |
| 2026-01-30 | State Informal Enforcement |
| 2026-01-30 | State Order Extension |
| 2025-05-30 | State Informal Action |
| 2025-05-30 | State Informal Enforcement |
| 2025-05-30 | State Informal Action |
| 2025-05-30 | State Order Extension |
| 2024-04-10 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2026-02-03.
Mohnton vs. Nearby Pennsylvania Cities
How Mohnton's water quality compares to similar cities in Pennsylvania:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Mohnton | F | 2 | 4 | 11,705 |
| Lincoln University | D | 0 | 2 | 11,689 |
| Ridley Park | C | 0 | 2 | 11,742 |
| Willow Street | C | 14 | 5 | 11,776 |
Common Questions About Mohnton Water
These are the most common questions residents search for about water quality in Mohnton, Pennsylvania:
Is Mohnton water hard or soft? Water hardness varies by source. Mohnton's 4 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Mohnton tap water? Mohnton's water receives a grade of F (38/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Mohnton? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Mohnton vs. Pennsylvania Average
Understanding how Mohnton compares to the broader Pennsylvania average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within Mohnton.
ZIP Codes in Mohnton
Mohnton spans 1 ZIP code. The ZIP with the lowest water quality score is 19540. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.