Water Quality in Pittsburgh, PA: 847 Violations — Grade C
Grade C · Score 64/100 · 5 water systems · Updated 2026-05-03
Pittsburgh's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Drinking water compliance data for Pittsburgh, PA reflects 847 EPA violations — details in the grid below.
Water Quality Map: Pittsburgh, PA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Water Quality by ZIP Code in Pittsburgh
Water quality varies across Pittsburgh's 77 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 15209 | D | 54 | 11 | 1 | View report → |
| 15223 | D | 54 | 11 | 1 | View report → |
| 15205 | C | 59 | 11 | 1 | View report → |
| 15207 | C | 59 | 11 | 1 | View report → |
| 15212 | C | 59 | 11 | 1 | View report → |
| 15215 | C | 59 | 11 | 1 | View report → |
| 15222 | C | 59 | 11 | 1 | View report → |
| 15234 | C | 59 | 11 | 1 | View report → |
| 15235 | C | 59 | 11 | 1 | View report → |
| 15236 | C | 59 | 11 | 1 | View report → |
| 15237 | C | 59 | 11 | 1 | View report → |
| 15238 | C | 59 | 11 | 1 | View report → |
| 15201 | C | 64 | 11 | 1 | View report → |
| 15202 | C | 64 | 11 | 1 | View report → |
| 15203 | C | 64 | 11 | 1 | View report → |
Water Quality Overview
Pittsburgh, Pennsylvania receives a water quality grade of C with an overall score of 64 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 5 water systems serving Pittsburgh have accumulated 847 EPA violations, including 77 health-based violations. These violations are tracked across 77 ZIP codes serving approximately 782,354 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Pittsburgh's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Pittsburgh water systems is 0.0036 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 86% of homes built before 1986, Pittsburgh 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
Pittsburgh 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 Pittsburgh
Pittsburgh is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 782,354 people across 77 ZIP codes.
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 770 enforcement actions against water systems serving Pittsburgh. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Pittsburgh
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 Pittsburgh Water Systems
The following contaminants have been detected or caused violations across Pittsburgh's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| E. coli | Microbiological | N/A | 154 | 77 | No |
| Fecal Coliform | Microbiological | N/A | 154 | 77 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 154 | 77 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 77 | 77 | No |
| Chlorite | Disinfection Byproducts | 1 mg/L | 77 | 77 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 77 | 77 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 9 enforcement actions against water systems serving Pittsburgh. Recent actions:
| Date | Action Type |
|---|---|
| 2025-12-08 | State Order Extension |
| 2025-12-03 | State Order Extension |
| 2025-11-12 | State Filed Judgment |
| 2025-08-07 | State Filed Judgment |
| 2025-03-14 | State Filed Judgment |
| 2025-03-14 | State Informal Enforcement |
| 2025-02-07 | State Informal Action |
| 2025-02-07 | State Order Extension |
| 2024-11-06 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-12-08.
Pittsburgh vs. Nearby Pennsylvania Cities
How Pittsburgh's water quality compares to similar cities in Pennsylvania:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Pittsburgh | C | 847 | 5 | 782,354 |
| Gladwyne | D | 0 | 1 | 822,600 |
| Haverford | D | 0 | 1 | 822,600 |
| Villanova | D | 0 | 1 | 822,600 |
Recommended Water Filters for Pittsburgh
Based on contaminants detected in Pittsburgh's water supply, these filter types are recommended:
Granular Activated Carbon (GAC, whole-house POE)
- Removes: Trihalomethane (TTHM)
- Effectiveness: 80-99%
- Cost range: $400–$2000
- Certification: NSF/ANSI 53
- Recommended products:
Water Quality by ZIP Code in Pittsburgh
Water quality varies across Pittsburgh's ZIP codes. The table below shows the worst-scoring and best-scoring areas:
| ZIP Code | Score | Grade | Violations | Health-Based |
|---|---|---|---|---|
| 15209 | 54 | D | 11 | 1 |
| 15223 | 54 | D | 11 | 1 |
| 15205 | 59 | C | 11 | 1 |
| 15207 | 59 | C | 11 | 1 |
| 15212 | 59 | C | 11 | 1 |
| 15215 | 59 | C | 11 | 1 |
| 15222 | 59 | C | 11 | 1 |
| 15234 | 59 | C | 11 | 1 |
| 15235 | 59 | C | 11 | 1 |
| 15236 | 59 | C | 11 | 1 |
| 15278 | 69 | C | 11 | 1 |
| 15262 | 69 | C | 11 | 1 |
| 15243 | 69 | C | 11 | 1 |
| 15233 | 69 | C | 11 | 1 |
| 15232 | 69 | C | 11 | 1 |
Common Questions About Pittsburgh Water
These are the most common questions residents search for about water quality in Pittsburgh, Pennsylvania:
Is Pittsburgh water hard or soft? Water hardness varies by source. Pittsburgh's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Pittsburgh tap water? Pittsburgh's water receives a grade of C (64/100). There are 77 health-based violations — consider filtration.
What is the best water filter for Pittsburgh? Based on detected contaminants, a granular activated carbon (gac, whole-house poe) filter is most recommended. See our Water Filter Matcher for personalized recommendations.
Pittsburgh vs. Pennsylvania Average
Understanding how Pittsburgh 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 Pittsburgh.
ZIP Codes in Pittsburgh
Pittsburgh spans 77 ZIP codes. The ZIP with the lowest water quality score is 15201. 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.