Water systems in Philadelphia, PA serve households with few reported safety events.

Data: EPA SDWIS, FEMA NFIP, Census ACS Last verified: 2026-07-19

Water Quality in Philadelphia

We track water quality and home safety data for 87 ZIP codes in Philadelphia, Pennsylvania (population ~1,582,836), covering 3 community water systems serving approximately 2,481,601 people region-wide.

87 of 87 ZIP codes (100%) have recorded EPA violations - 348 total, including no health-based violations.

Average Home Safety Score: A (91/100)

Water sources: Surface water.

Top Contaminants

Lead Risk

• Average lead level (90th percentile): 0.0020 mg/L
• 86% of housing built before 1986 (when lead solder was banned)
• 49% of housing built before 1950 (when lead pipes were standard)
• Median year built: 1939
• Most common estimated pipe material: Galvanized Steel or Copper
• Lead exposure risk score: 66/100
• Estimated lead service line probability: 25%
• 47 ZIP codes classified as high or very high lead risk

With 86% of homes built before the 1986 lead solder ban, Philadelphia residents - especially those in older neighborhoods - should consider testing their tap water for lead. Homes built before 1950 are at the highest risk of having lead service lines.

Housing Age Distribution

730,685 total housing units across 87 ZIP codes:

Flood Risk

FEMA National Flood Insurance Program data for Philadelphia:

• 1,708 flood insurance claims on record
• $47,625,805 total paid out
• $27,884 average claim payout
• Dominant FEMA flood zone: X (Low risk)
• 23 of 87 ZIP codes in high-risk flood zones (A/V)

Radon Risk

Dominant EPA radon zone: Zone 3 (Low Risk)

• Zone 1 (High): 2 ZIP codes
• Zone 2 (Moderate): 0 ZIP codes
• Zone 3 (Low): 85 ZIP codes

Neighborhoods by Safety Score

Safest Areas

Areas Needing Attention

What Philadelphia Residents Can Do

Test Your Water

• Order a certified lab test - home test kits cost $20–50 and cover lead, bacteria, and common contaminants
• Request your utility's CCR (Consumer Confidence Report) - your water provider must publish this annually
• Check your ZIP code - each area in Philadelphia has different water systems and risk levels

Filter Your Water

• NSF-certified pitcher filter removes chlorine taste and some contaminants ($20–40)
• NSF 53-certified filter for lead - recommended for homes built before 1986
• Reverse osmosis system removes 95%+ of contaminants including lead, PFAS, and nitrates ($150–400)

Stay Informed

• Visit your ZIP code report for detailed, address-level data
• Sign up for EPA water quality alerts
• Review the annual water quality report from your local utility

All ZIP Codes in Philadelphia

• 19019 [A] - 4 violations
• 19092 [A] - 4 violations
• 19093 [A] - 4 violations
• 19099 [A] - 4 violations
• 19101 [A] - 4 violations
• 19102 [A] - 4 violations
• 19103 [B] - 4 violations
• 19104 [A] - 4 violations
• 19105 [C] - 4 violations
• 19106 [A] - 4 violations
• 19107 [A] - 4 violations
• 19108 [A] - 4 violations
• 19109 [A] - 4 violations
• 19110 [A] - 4 violations
• 19111 [A] - 4 violations
• 19112 [A] - 4 violations
• 19113 [C] - 4 violations
• 19114 [B] - 4 violations
• 19115 [A] - 4 violations
• 19116 [A] - 4 violations
• 19118 [A] - 4 violations
• 19119 [A] - 4 violations
• 19120 [A] - 4 violations
• 19121 [A] - 4 violations
• 19122 [A] - 4 violations
• 19123 [A] - 4 violations
• 19124 [A] - 4 violations
• 19125 [A] - 4 violations
• 19126 [A] - 4 violations
• 19127 [B] - 4 violations
• 19128 [B] - 4 violations
• 19129 [A] - 4 violations
• 19130 [A] - 4 violations
• 19131 [A] - 4 violations
• 19132 [A] - 4 violations
• 19133 [A] - 4 violations
• 19134 [A] - 4 violations
• 19135 [A] - 4 violations
• 19136 [A] - 4 violations
• 19137 [A] - 4 violations
• 19138 [A] - 4 violations
• 19139 [A] - 4 violations
• 19140 [A] - 4 violations
• 19141 [A] - 4 violations
• 19142 [A] - 4 violations
• 19143 [A] - 4 violations
• 19144 [A] - 4 violations
• 19145 [A] - 4 violations
• 19146 [A] - 4 violations
• 19147 [A] - 4 violations
• 19148 [A] - 4 violations
• 19149 [A] - 4 violations
• 19150 [A] - 4 violations
• 19151 [A] - 4 violations
• 19152 [A] - 4 violations
• 19153 [B] - 4 violations
• 19154 [A] - 4 violations
• 19155 [A] - 4 violations
• 19160 [A] - 4 violations
• 19161 [A] - 4 violations
• 19162 [A] - 4 violations
• 19170 [A] - 4 violations
• 19171 [A] - 4 violations
• 19172 [A] - 4 violations
• 19173 [A] - 4 violations
• 19175 [A] - 4 violations
• 19176 [A] - 4 violations
• 19177 [A] - 4 violations
• 19178 [A] - 4 violations
• 19179 [A] - 4 violations
• 19181 [A] - 4 violations
• 19182 [A] - 4 violations
• 19183 [A] - 4 violations
• 19184 [A] - 4 violations
• 19185 [A] - 4 violations
• 19187 [A] - 4 violations
• 19188 [A] - 4 violations
• 19190 [A] - 4 violations
• 19191 [A] - 4 violations
• 19192 [A] - 4 violations
• 19193 [A] - 4 violations
• 19194 [A] - 4 violations
• 19195 [A] - 4 violations
• 19196 [A] - 4 violations
• 19197 [A] - 4 violations
• 19244 [A] - 4 violations
• 19255 [A] - 4 violations

Frequently Asked Questions

Is the tap water safe to drink in Philadelphia, PA?

Philadelphia has an average Home Safety Score of 91/100 (grade A) across 87 ZIP codes. There are 348 recorded EPA violations, 0 of which are health-based. Safety varies by neighborhood - check your specific ZIP code report for details.

Does Philadelphia have lead in the water?

The average 90th-percentile lead level across Philadelphia is 0.0020 mg/L, below the EPA action level of 0.015 mg/L. No ZIP codes currently exceed the EPA lead action level. About 86% of housing was built before 1986, when lead solder was banned.

Is Philadelphia at risk for flooding?

FEMA data shows 1,708 flood insurance claims in Philadelphia ZIP codes, with an average payout of $27,884. 23 of 87 ZIP codes are in high-risk FEMA flood zones (A or V).

Are there lead pipes in Philadelphia homes?

86% of Philadelphia housing was built before 1986, when lead solder was common in plumbing. 49% was built before 1950, when lead pipes were standard. The most common estimated pipe material is Galvanized Steel or Copper. The estimated probability of lead service lines is 25%. We recommend testing your water if your home was built before 1986.

What contaminants have been found in Philadelphia water?

The most common contaminants by violation count are Fecal Coliform. Across 87 ZIP codes, 87 have recorded EPA violations. Check your ZIP code report for the specific contaminants in your area.

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Housing age: U.S. Census Bureau American Community Survey
• Flood data: FEMA National Flood Insurance Program
• Lead exposure: Composite risk score based on housing age, water lead levels, and service line estimates
• Radon: EPA Map of Radon Zones

Updated daily.

Housing Age Profile

Lead exposure in tap water isn't just a function of what water utilities deliver - it's also shaped by the plumbing inside individual homes. Structures built before 1986 may contain lead-soldered copper joints, and homes built before 1970 face an additional risk from lead pipes themselves. Philadelphia's median build year of 1939 suggests the housing stock is broadly weighted toward the safer post-1986 era, but the age distribution shown above makes clear that the pre-1986 share of the inventory still represents a meaningful fraction worth understanding for anyone in an older home.

1939

Median Year Built

0%

Pre-1986 (Lead Paint Risk)

0%

Pre-1970 (Lead Pipes Risk)

Most homes in Philadelphia were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Protecting Children from Lead in Philadelphia

0.002

mg/L Avg Lead (Limit: 0.015)

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Lead risk in Philadelphia appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Climate-Related Water Risk for Philadelphia

Although Philadelphia's flood history doesn't reach high-severity thresholds, NFIP data documents 1708 claims and FEMA maps place 0% of ZIP codes in designated flood zones - a combined profile that makes flood-related water quality considerations a reasonable planning baseline.

1,708

Total FEMA Flood Claims

~85

Est. Claims/Year

Philadelphia has a moderate flood history with 1,708 FEMA claims. Flood events can contaminate drinking water and overwhelm treatment systems.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure.

Residents in flood-prone areas should consider flood insurance even outside FEMA zones - over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.

Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.