Is Prestonsburg, KY tap water safe?
The short answer
2 of the 2 utilities serving Prestonsburg have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Kentucky’s records: Prestonsburg City Utilities and Southern Water & Sewer District.
Prestonsburg City Utilities, which serves the most people here, has 1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 78.8 ppb, above the legal limit.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Prestonsburg’s ZIP codes, from EPA’s estimates.
- Open report
Prestonsburg City Utilities
Kentucky · serves 26,788 people · about 1,100 in Prestonsburg
1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 78.8 ppb, above the legal limit.
1 health-based violation since 2016
- Open report
Southern Water & Sewer District
Kentucky · serves 15,110 people · under 100 in Prestonsburg
1 result above the legal limit and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 69.3 ppb, above the legal limit.
14 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Prestonsburg City Utilities’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Water testing near Prestonsburg
TapBuff hasn’t read Kentucky’s list of certified labs yet. The national page links every state’s own list.
Certified labs, state by stateZIP codes in Prestonsburg
Which ZIP codes are in Prestonsburg: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology.
Near Prestonsburg
Towns nearby with a page of their own.
What to do next
- Read Prestonsburg City Utilities’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water