Horn Lake Tap Water Quality Report
Horn Lake's water has 2 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
No single water system serves most of Horn Lake (26,574 residents, Census 2024 estimate). Its large systems are CITY OF HORN LAKE (EPA counts 13,316 people served, about 50% of Horn Lake's population); HORN LAKE WATER ASSOCIATION (EPA counts 12,735 people served, about 48% of Horn Lake's population); WALLS WATER ASSN- LAKE FOREST (EPA counts 8,493 people served, about 32% of Horn Lake's population). EPA's counts may include people served outside Horn Lake, so each share is at most that. Check which one bills you: each system's figures are shown separately below.
- CITY OF HORN LAKE: 104 contaminants tested, 2 above EPA MCLGs; health-based violations since 2020: 0
- HORN LAKE WATER ASSOCIATION: 76 contaminants tested, 0 above EPA MCLGs; health-based violations since 2020: 0
- WALLS WATER ASSN- LAKE FOREST: 76 contaminants tested, 2 above EPA MCLGs; health-based violations since 2020: 0
Other systems listed for Horn Lake with results above guidelines: WALLS WATER ASSN- LAKE FOREST (2 above guidelines), CITY OF HORN LAKE - HOLLY HILLS (1 above guidelines)
Water systems
3 large systems
Residents (Census 2024)
26,574
Health-based violations since 2020
0
CITY OF HORN LAKE. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
May 2021 · CITY OF HORN LAKE
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Horn Lake 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. Horn Lake's water has 2 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
CITY OF HORN LAKE, Horn Lake's water system, serves 13,316 people. 4 other systems are listed for Horn Lake. Each system's results are listed under its own name, never added to CITY OF HORN LAKE's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for CITY OF HORN LAKE is from May 2021.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Mississippi
Horn Lake Water Service Areas
What these numbers actually mean for Horn Lake, MS
We read Horn Lake, MS’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.
- 2 contaminants above EPA MCLGs and 9 contaminants with an EPA health goal detected in some samples (no level on file)
- 74 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Horn Lake
Based on Horn Lake's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
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
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
What Horn Lake's water readings can explain
Utility-reported data for Horn Lake includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Horn Lake, 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 Horn Lake? Public-water results do not apply to private wells. See DeSoto County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Horn Lake
Horn Lake's tap water has an estimated 1.4 grains per gallon (24.0 mg/L, county sampling in DeSoto County) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for an estimated 1.4 gpg water in Horn Lake — 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 Mississippi as a whole, read water softener cost in Mississippi — priced against the plumber wage published for the state.
Frequently Asked Questions About Horn Lake Tap Water
Horn Lake's water has 2 contaminants above EPA MCLGs. While the water meets federal legal limits, 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 CITY OF HORN LAKE. For a problem with your water now (discolored water, no water, low pressure, a leak), contact CITY OF HORN LAKE directly.
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