Royal Water
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Royal Water holds a 5-star rating across 104 Google reviews. If you own an older home in Philadelphia, mold is worth taking seriously. The city's 68% average humidity and 42 inches of annual rain create conditions where mold thrives, especially in houses built before 1960. Many Philadelphia homes have the age and moisture exposure that invite problems, so catching mold early saves you headaches and money down the road.
When you're ready to call someone, make sure they're IICRC-certified and carry both general liability and pollution liability insurance. Pennsylvania doesn't require a statewide mold remediation license, which means you need to do a little homework yourself. Before you sign anything with Royal Water or any contractor, ask to see proof of their certifications and insurance. Most remediation work in this area runs between $1,500 and $4,500, so get a clear estimate in writing and understand what's included.
Based on public rating data and local climate records, not on individual reviews. We do not represent or endorse this firm.
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Business data sourced from public records · Last updated March 2026
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