Is Downsville, LA tap water safe?
The short answer
3 of the 3 utilities serving Downsville have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Village of Downsville Water System, Holmesville Water System and Point Wilhite WS.
Village of Downsville Water System, which serves the most people here, has 2 results above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 117 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 Downsville’s ZIP codes, from EPA’s estimates.
- Open report
Village of Downsville Water System
Louisiana · serves 216 people · under 100 in Downsville
2 results above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 117 ppb, above the legal limit.
47 health-based violations since 2016
- Open report
Holmesville Water System
Louisiana · serves 2,406 people · based in Downsville
1 result above the health goal. The worst: Arsenic at 0.36 ppb, above the health goal.
10 health-based violations since 2016
- Open report
Point Wilhite WS
Louisiana · serves 2,292 people · based in Downsville
1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 58.3 ppb, above the legal limit.
12 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 Village of Downsville Water System’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Water testing near Downsville
No lab Louisiana certifies is within 75 miles of Downsville on the state’s list. Some take samples by mail; the state’s page lists them all.
All 48 certified labs for LouisianaZIP codes in Downsville
Which ZIP codes are in Downsville: 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 Downsville
Towns nearby with a page of their own.
What to do next
- Read Village of Downsville Water System’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