Erwin Tap Water Quality Report
Erwin's water has 1 contaminant above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029). Consider using a certified water filter for additional protection.
Water system
ERWIN UTILITIES AUTHORITY
People Served
12,323
Health-based violations since 2020
0
ERWIN UTILITIES AUTHORITY. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Aug 2024 · ERWIN UTILITIES AUTHORITY
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Erwin Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Erwin's water has 1 contaminant above EPA health-based guidelines (MCLGs) and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029).
ERWIN UTILITIES AUTHORITY, Erwin's water system, serves 12,323 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for ERWIN UTILITIES AUTHORITY is from Aug 2024.
In EPA's 2023–2026 UCMR 5 testing, ERWIN UTILITIES AUTHORITY measured lithium at up to 51.1 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Tennessee
Erwin Water Service Areas
What these numbers actually mean for Erwin, TN
We read Erwin, TN’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 1 contaminant above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029) and 2 contaminants with an EPA health goal detected in some samples (no level on file)
- 93 results on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Erwin's water
ERWIN UTILITIES AUTHORITY
PWSID TN0000231
ERWIN UTILITIES AUTHORITY reported 0.735 mg/L, at or above the 0.7 mg/L U.S. Public Health Service recommendation and below the 1.5 mg/L WHO guideline value and NTP neurodevelopment review level.
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Recommended Water Filters for Erwin
Based on Erwin's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA's health goals (MCLGs) or legal limits (MCL).
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Verify Your Water Quality with Independent Testing
With 1 contaminant above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029) and 2 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 3 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Erwin's water readings can explain
Utility-reported data for Erwin includes sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Erwin, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Erwin? Public-water results do not apply to private wells. See Unicoi County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Erwin
Erwin's tap water has an estimated 1.1 grains per gallon (19.0 mg/L, county sampling in Unicoi County) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for an estimated 1.1 gpg water in Erwin — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Tennessee as a whole, read water softener cost in Tennessee — priced against the plumber wage published for the state.
Frequently Asked Questions About Erwin Tap Water
Erwin's water has 1 contaminant above EPA MCLGs and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029). We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach ERWIN UTILITIES AUTHORITY. For a problem with your water now (discolored water, no water, low pressure, a leak), contact ERWIN UTILITIES AUTHORITY directly.
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