Mount Pleasant, PA Water Safety: 63/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
Across water systems in Mount Pleasant, safety results are uneven — a portion carry active or recent violations, while others meet federal standards without incident, placing the city in the middle tier for PA.
How Mount Pleasant Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Mount Pleasant Water
- Homes built before 1986: 79% — older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
Who Supplies Your Water in Mount Pleasant
Federal drinking water records identify 6 systems in Mount Pleasant, PA. The leading 3 providers serve the largest share of residential connections, each operating as a separate entity with its own rate authority, infrastructure management, and EPA compliance obligations — so service conditions are not uniform city-wide.
Overview
We track water quality and home safety data for 1 ZIP code in Mount Pleasant, Pennsylvania (population ~15,420), covering 6 community water systems serving approximately 190,544 people region-wide.
No EPA violations recorded across any ZIP codes in Mount Pleasant — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mount Pleasant: C (63/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Mount Pleasant water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Mount Pleasant
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 15666 | C | Mawc Yough Plant | 133,000 |
All ZIP Codes in Mount Pleasant
- 15666 [C]
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
Updated daily.
Housing & Infrastructure in Mount Pleasant
With 79% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Mount Pleasant's housing stock is predominantly older, with a median build year of 1969 that reflects decades of construction before federal plumbing standards were tightened. The 1986 ban on lead solder and the pre-1970 era of lead service lines are both relevant benchmarks here — a significant share of the residential inventory predates one or both of those cutoffs, creating an elevated baseline for plumbing-related lead risk that aggregate water quality data may not fully reflect at the household level.
Over half of homes in Mount Pleasant were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Mount Pleasant Homeowners
Although the Mount Pleasant remediation share is moderate, it remains reachable for most homeowners who plan for the expense in advance.
Remediation costs are moderate relative to home values in Mount Pleasant. The estimated $800–$2,600 range is manageable for most homeowners but still worth budgeting for. Home values are 27% below the Pennsylvania average.
Lead Exposure Risk for Children in Mount Pleasant
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.
If 79% of the Mount Pleasant inventory comes from before the federal ban on lead-bearing solder — and if utility samples sit at or near 0.015 mg/L — the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Mount Pleasant
NFIP records stretching across multiple decades show Mount Pleasant accumulating 10 claims and carrying 100% of its ZIP codes inside FEMA flood zones — evidence of meaningful exposure that extends beyond isolated incidents. The mechanisms linking flooding to water quality haven't changed: treatment facilities can be overwhelmed, wells can be infiltrated, and distribution systems can experience backflow. For a community at this exposure level, those mechanisms shift from hypothetical to periodically relevant.
Mount Pleasant has a moderate flood history with 10 FEMA claims averaging $2,555 per payout. 100% of ZIP codes fall within FEMA flood zones. 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. Flood damage can add significantly to the estimated <strong>$1,600</strong> remediation cost per household.
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.
What You Can Do in Mount Pleasant
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 79% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Mount Pleasant, PA