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Tap water quality report

Erwin Utilities Authority

EPA monitoring tested this supplier for 58 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

58
contaminants tested
10
detected
12,236
people served
60
health-based violations
Tennessee rankingsLead in TennesseePFAS in Tennessee
Water source
Ground water under surface influence
Ownership
Local government
Counties served
Unicoi

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.

60
health-based violations
71
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2006-02-01 → 2006-02-28
MCL Health-based Resolved 2006-02-01 → 2006-02-28
MCL Health-based Resolved 2006-02-01 → 2006-02-28
MCL Health-based Resolved 2006-02-01 → 2006-02-28
TT Health-based Resolved 1996-12-01 → 1996-12-31
TT Health-based Resolved 1996-12-01 → 1996-12-31
TT Health-based Resolved 1996-12-01 → 1996-12-31
TT Health-based Resolved 1996-12-01 → 1996-12-31
TT Health-based Archived 1996-12-01 → 1996-12-31
TT Health-based Archived 1996-12-01 → 1996-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0075 µg/L 2/12 2024
PFHXS 0.0036 µg/L 2/12 2024
PFOS 0.0067 µg/L 2/12 2024
PFOA 0.0041 µg/L 1/12 2024

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
TTHM
15.4 µg/L 19%
of the EPA limit 80 µg/L
worst single sample: 22.8 µg/L
51/54 SYR4 2014–2019
Nitrate
3500 µg/L 35%
of the EPA limit 10000 µg/L
worst single sample: 4080 µg/L
48/48 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
6.004 µg/L 10%
of the EPA limit 60 µg/L
worst single sample: 7.41 µg/L
37/54 SYR4 2014–2019
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Gross Alpha, Excl. Radon And U
2.355 pCi/L 16%
of the EPA limit 15 pCi/L
worst single sample: 2.4 pCi/L
4/4 SYR4 2015
Lithium
51.1 µg/L
No EPA limit set
 2/12 UCMR-5 2024
48 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAtrazineBenzeneChlorobenzeneCarbon TetrachlorideDichloromethaneEthylbenzeneHfpo-DaNetfosaaNfdhaNmefosaaPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaStyreneTetrachloroethyleneTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BROWN, LEE H.
Phone
423-743-1823
Email
[email protected]

Frequently asked questions about Erwin Utilities Authority

Is Erwin Utilities Authority tap water safe to drink?

EPA monitoring detected 10 contaminants in Erwin Utilities 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 Erwin Utilities Authority's water?

EPA monitoring detected TTHM, Nitrate, Total Haloacetic Acids (HAA5), Lead, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Erwin Utilities Authority serve?

Erwin Utilities Authority reports serving 12,236 people in Tennessee, per its EPA record.

Has Erwin Utilities Authority had any water quality violations?

The EPA has 71 violations on file for Erwin Utilities Authority, of which 60 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.