Water system

United Water System

Name: United Water System drinking water quality
Creator: TapWaterZip
License: https://www.usa.gov/government-works

Louisiana EPA ID LA1099009 4,446 people Groundwater

What this means for you

Is it safe to drink right now?: EPA records show 6 recent health-based violations for United Water System that are not marked resolved. Check your utility’s website or bill insert for any boil-water or do-not-drink notice and follow it.
Should I use a filter?: Yes, we recommend considering one. Unresolved health-based issues make a home filter a reasonable backup.
What kind of filter?: See matched standards and product picks.

This is general information from public EPA data, not medical advice. Lead often comes from a home’s own pipes, so only a test of your tap can tell your exposure. If you are pregnant, caring for an infant, or have a weakened immune system, ask your doctor or health department.

Summary: 10 health-based violations in the last 5 years; 6 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).

EPA data snapshot 2026Q3. Grade is TapWaterZip's own score — see methods.

PFAS (“forever chemicals”), EPA UCMR 5

No PFAS detected in any UCMR 5 sample.

5 PFAS tested and not detected

HFPO-DA, PFNA, PFOA, PFHxS, PFOS (2 samples each, below EPA minimum reporting levels).

Hazard Index (PFHxS, PFNA, GenX, PFBS): 0 (limit 1.0, proposed for repeal).

Averages are per sampling location across UCMR 5 samples (non-detects counted as 0), approximating the rule’s running annual average. Not an official compliance determination; PFOA/PFOS MCL compliance begins April 26, 2029.

Lithium (also tested in UCMR 5, not a PFAS; no federal limit): highest location average 5.6 ppb.

Lead and copper

Lead 90th percentile2 ppb2023-12-31

Current action level15 ppbLCRI lowers to 10 ppb on Nov 1, 2027

Copper 90th percentile2.1 mg/L2020-12-31 · action level 1.3 mg/L

Violations (last 5 years)

Began	Type	Contaminant / rule	Status
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2026-06-15	Required treatment not done	Groundwater Rule	Unaddressed
2022-10-01	Contaminant above legal limit	Arsenic	Resolved
2022-05-24	Required treatment not done	Groundwater Rule	Resolved
2022-05-24	Required treatment not done	Groundwater Rule	Resolved
2022-05-24	Required treatment not done	Groundwater Rule	Resolved

Filters matched to this water

FILTER PICKS

Look for filters certified (NSF, IAPMO or WQA) to these standards for the specific contaminant. Buttons open the maker’s page or an Amazon search; use “Check NSF listing” to verify a model’s claims. No affiliate links yet — grades are never sold.