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Mount Vernon Tap Water Quality Report
Mount Vernon's water quality record shows 76 results on file for MOUNT VERNON CITY PWS, none above EPA's health goals or legal limits.
Other systems listed for Mount Vernon with results above guidelines: KNOX COUNTY WATER AND WASTEWATER PWS (3 above guidelines), GRANDVIEW MHP A PWS (3 above guidelines), COLONIAL TERRACE MHC LLC (1 above guidelines)
People Served
18,071
Health-based violations since 2020
0
MOUNT VERNON CITY PWS. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Jul 2024 · MOUNT VERNON CITY PWS
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Mount Vernon Tap Water Safe to Drink?
Mount Vernon's tap water has 76 results on file for MOUNT VERNON CITY PWS, none above EPA's health goals or legal limits. On that record the water is considered safe to drink, though some people may still prefer filtered water for taste or extra protection.
MOUNT VERNON CITY PWS, Mount Vernon's water system, serves 18,071 people. 3 other systems are listed for Mount Vernon. Each system's results are listed under its own name, never added to MOUNT VERNON CITY PWS's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for MOUNT VERNON CITY PWS is from Jul 2024.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Ohio
Mount Vernon Water Service Areas
What these numbers actually mean for Mount Vernon, OH
We read Mount Vernon, OH’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.
- No result above EPA's health goals or legal limits
- 76 results on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Mount Vernon's water
MOUNT VERNON CITY PWS
PWSID OH4200812
MOUNT VERNON CITY PWS reported 0.301 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
KNOX COUNTY WATER AND WASTEWATER PWS
PWSID OH4202012
KNOX COUNTY WATER AND WASTEWATER PWS reported 0.98 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.
COLONIAL TERRACE MHC LLC
PWSID OH4201512
Fluoride was detected in 25.0% of COLONIAL TERRACE MHC LLC's samples (median below the detection limit).
GRANDVIEW MHP A PWS
PWSID OH4202712
GRANDVIEW MHP A PWS reported 0.43 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
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General-Purpose Water Filters for Mount Vernon
Mount Vernon's results show no result above EPA's health goals or legal limits, so these are general-purpose NSF/ANSI 53 certified filters, not chosen for any contaminant.
Pentair Residential Filtration, LLC
Everpure Residential H-300-NXT
NSF Certified:
Capacity
3001 gal
Filter Life
10 mo
Flow Rate
0.5 gpm
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
Whirlpool Corporation
W11569861
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.52 gpm
Removes 22 contaminants:
+17 more
Atrazine, Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Styrene, Tetrachloroethylene, Toxaphene, Trichloroethylene, Turbidity
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:
Verify Your Water at Your Own Tap
This system met every enforceable federal limit in its latest published results. Those are taken in the distribution system, not at your tap — independent testing is what covers your own plumbing and the substances nobody sampled.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
What Mount Vernon's water readings can explain
Utility-reported data for Mount Vernon includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Mount Vernon, 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 Mount Vernon? Public-water results do not apply to private wells. See Knox County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Mount Vernon
Mount Vernon's tap water has an estimated 12.9 grains per gallon (220.5 mg/L, county sampling in Knox County) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for an estimated 12.9 gpg water in Mount Vernon — 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 Ohio as a whole, read water softener cost in Ohio — priced against the plumber wage published for the state.
Frequently Asked Questions About Mount Vernon Tap Water
Mount Vernon's tap water has 76 results on file for MOUNT VERNON CITY PWS, none above EPA's health goals or legal limits. On that record the water is considered safe to drink, though some people may still prefer filtered water for taste or extra protection.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach MOUNT VERNON CITY PWS. For a problem with your water now (discolored water, no water, low pressure, a leak), contact MOUNT VERNON CITY PWS directly.
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