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Tap water quality report

St Mary Parish W&S #2 Bayou Vista

EPA monitoring tested this supplier for 44 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
16
detected
5,379
people served
0
health-based violations
Water source
SWP
Ownership
Local government
Counties served
St. Mary Parish

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Archived 2017-12-01 → 2017-12-31
MON Monitoring Archived 2017-12-01 → 2017-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0069 µg/L 1/4 2025
Pfhxa 0.0030 µg/L 1/4 2025
Pfpea 0.0031 µg/L 1/4 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
13.2 µg/L
No EPA limit set
37/37 SYR4 2015–2019
Chloroform
35 µg/L
No EPA limit set
37/37 SYR4 2015–2019
Dichloroacetic Acid
23 µg/L
No EPA limit set
37/37 SYR4 2015–2019
TTHM
50.1 µg/L 63%
of the EPA limit 80 µg/L
37/37 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
43.2 µg/L 72%
of the EPA limit 60 µg/L
37/37 SYR4 2015–2019
Trichloroacetic Acid
18 µg/L
No EPA limit set
37/37 SYR4 2015–2019
Dibromochloromethane
4.6 µg/L
No EPA limit set
36/37 SYR4 2015–2019
Dibromoacetic Acid
2.7 µg/L
No EPA limit set
34/37 SYR4 2015–2019
Monochloroacetic Acid
2.4 µg/L
No EPA limit set
16/37 SYR4 2015–2019
Copper
1000 µg/L 77%
of the EPA limit 1300 µg/L
14/40 SYR4 2016–2019
Monobromoacetic Acid
5.2 µg/L
No EPA limit set
6/37 SYR4 2015–2019
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
5/40 SYR4 2016–2019
Lead
0.00030 mg/L 2%
of the EPA limit 0.0150 mg/L
4/4 LCR 2025
28 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformHfpo-DaNetfosaaNfdhaNmefosaaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
COOPER, CHRIS
Phone
985-395-2747
Email
scgcooper@cox.net

Frequently asked questions about St Mary Parish W&S #2 Bayou Vista

Is St Mary Parish W&S #2 Bayou Vista tap water safe to drink?

EPA monitoring detected 16 contaminants in St Mary Parish W&S #2 Bayou Vista's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in St Mary Parish W&S #2 Bayou Vista's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does St Mary Parish W&S #2 Bayou Vista serve?

St Mary Parish W&S #2 Bayou Vista reports serving 5,379 people in Louisiana, per its EPA record.

Has St Mary Parish W&S #2 Bayou Vista had any water quality violations?

The EPA has 2 violations on file for St Mary Parish W&S #2 Bayou Vista, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.