Is St Tam Parish - Alton Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: St. Tammany 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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1992-07-01 → 1992-07-31
MCL	Health-based	Archived	1992-07-01 → 1992-07-31
MCL	Health-based	Archived	1992-07-01 → 1992-07-31
MCL	Health-based	Archived	1992-07-01 → 1992-07-31
MCL	Health-based	Archived	1992-07-01 → 1992-07-31
MON	Monitoring	Resolved	2016-06-01 → 2016-06-30
MON	Monitoring	Resolved	2016-06-01 → 2016-06-30
MON	Monitoring	Resolved	2016-06-01 → 2016-06-30
MON	Monitoring	Resolved	2016-06-01 → 2016-06-30
MR	Monitoring	Resolved	2016-04-01 → 2016-06-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Chloroform	104 µg/L No EPA limit set	44/46	SYR4	2013–2019
TTHM	121 µg/L 151% of the EPA limit, in the worst sample — 80 µg/L	44/46	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	42.6 µg/L 71% of the EPA limit 60 µg/L	44/46	SYR4	2013–2019
Trichloroacetic Acid	18.9 µg/L No EPA limit set	44/46	SYR4	2013–2019
Dichloroacetic Acid	28.2 µg/L No EPA limit set	43/46	SYR4	2013–2019
Bromodichloromethane	14.9 µg/L No EPA limit set	41/46	SYR4	2013–2019
Dibromochloromethane	2.4 µg/L No EPA limit set	35/46	SYR4	2013–2019
Monochloroacetic Acid	7.7 µg/L No EPA limit set	14/46	SYR4	2013–2019
Dibromoacetic Acid	0.9900 µg/L No EPA limit set	10/46	SYR4	2013–2019
Lead	0.0012 mg/L 8% of the EPA limit 0.0150 mg/L	9/9	LCR	2025
Copper	100 µg/L 7.7% of the EPA limit 1300 µg/L	4/16	SYR4	2013–2019
Nitrate-Nitrite	31 µg/L 0.3% of the EPA limit 10000 µg/L	4/22	SYR4	2012–2019
Lead	4 µg/L 27% of the EPA limit 15 µg/L	3/16	SYR4	2013–2019
Di(2-ethylhexyl) Phthalate	3.87 µg/L 65% of the EPA limit 6 µg/L	1/3	SYR4	2012–2019
Fluoride	700 µg/L 18% of the EPA limit 4000 µg/L	1/1	SYR4	2019
Monobromoacetic Acid	1 µg/L No EPA limit set	1/46	SYR4	2013–2019

63 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: TISSUE, CHRISTOPHER
Phone: 985-893-1717
Email: cptissue@stpgov.org

Frequently asked questions about St Tam Parish - Alton

Is St Tam Parish - Alton tap water safe to drink?

EPA monitoring detected 16 contaminants in St Tam Parish - Alton'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 Tam Parish - Alton's water?

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

How many people does St Tam Parish - Alton serve?

St Tam Parish - Alton reports serving 499 people in Louisiana, per its EPA record.

Has St Tam Parish - Alton had any water quality violations?

The EPA has 37 violations on file for St Tam Parish - Alton, of which 5 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.