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Tap water quality report

Southmost Regional Water Authority

EPA monitoring tested this supplier for 79 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
16
detected
0
people served
4
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Cameron

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.

4
health-based violations
54
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
MR Monitoring Resolved 2021-11-01 → 2021-11-30
MR Monitoring Resolved 2021-11-01 → 2021-11-30

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chlorite
101.1 µg/L 10%
of the EPA limit 1000 µg/L
worst single sample: 135 µg/L
90/195 SYR4 2018–2019
Nitrate
60 µg/L 0.6%
of the EPA limit 10000 µg/L
 8/16 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
7.34 µg/L 12%
of the EPA limit 60 µg/L
worst single sample: 8.3 µg/L
4/8 SYR4 2012–2019
Dibromoacetic Acid
7.66 µg/L
No EPA limit set
worst single sample: 8.3 µg/L
3/8 SYR4 2012–2019
Arsenic
4.393 µg/L 44%
of the EPA limit 10 µg/L
worst single sample: 4.4 µg/L
2/3 SYR4 2012–2019
Copper
7.2685 µg/L 0.6%
of the EPA limit 1300 µg/L
worst single sample: 7.43 µg/L
2/2 SYR4 2012–2016
Cyanide
156.5 µg/L 78%
of the EPA limit 200 µg/L
worst single sample: 160 µg/L
2/2 SYR4 2014–2017
Combined Radium (-226 And -228)
1.475 pCi/L 30%
of the EPA limit 5 pCi/L
worst single sample: 1.5 pCi/L
2/2 SYR4 2012–2018
Barium
2.7 µg/L 0.1%
of the EPA limit 2000 µg/L
 1/3 SYR4 2012–2019
Chromium
1.33 µg/L 1.3%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2019
Fluoride
220 µg/L 5.5%
of the EPA limit 4000 µg/L
 1/3 SYR4 2012–2018
Lead
0.4870 µg/L 3.2%
of the EPA limit 15 µg/L
 1/2 SYR4 2012–2016
Monobromoacetic Acid
1.2 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
Nitrate-Nitrite
80 µg/L 0.8%
of the EPA limit 10000 µg/L
 1/2 SYR4 2013–2014
Nitrite
60 µg/L 6%
of the EPA limit 1000 µg/L
 1/2 SYR4 2013–2014
Selenium
14.4 µg/L 29%
of the EPA limit 50 µg/L
 1/3 SYR4 2012–2019
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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HOLLMANN, JOSEPH L
Phone
617-599-9047
Email
[email protected]

Frequently asked questions about Southmost Regional Water Authority

Is Southmost Regional Water Authority tap water safe to drink?

EPA monitoring detected 16 contaminants in Southmost Regional Water Authority'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 Southmost Regional Water Authority's water?

EPA monitoring detected Chlorite, Nitrate, Total Haloacetic Acids (HAA5), Dibromoacetic Acid, Arsenic, and others. The full list with the level and data source for each is above.

How many people does Southmost Regional Water Authority serve?

Southmost Regional Water Authority reports serving 0 people in Texas, per its EPA record.

Has Southmost Regional Water Authority had any water quality violations?

The EPA has 54 violations on file for Southmost Regional Water Authority, of which 4 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.