Hays Tap Water Quality Report
Hays's water has 4 contaminants above EPA MCLGs. We recommend using a certified water filter.
5 other systems serving parts of Hays report results above guidelines — check which system bills you. ELLIS CO RWD 1C (3 above guidelines), ELLIS CO RWD 6 (4 above guidelines), BUFFALO HILLS PARK (5 above guidelines), COUNTRY VIEW MOBILE HOME PARK (1 above guidelines), HAYS SUBURBAN ESTATES (6 above guidelines)
Other systems listed for Hays with results above guidelines: ELLIS CO RWD 3 (5 above guidelines), TREGO CO RWD 2 (6 above guidelines)
Water system
HAYS, CITY OF
5 other systems also serve parts of Hays. 2 other systems are listed for Hays. See their figures
People Served
20,795
Health-based violations since 2020
0
HAYS, CITY OF. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Jun 2022 · HAYS, CITY OF
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Hays Tap Water Safe to Drink?
We strongly recommend using a certified water filter to reduce exposure: Hays's water has 4 contaminants above EPA health-based guidelines. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Hays's water.
HAYS, CITY OF, Hays's water system, serves 20,795 people. 5 other systems also serve parts of Hays. 2 other systems are listed for Hays. Each system's results are listed under its own name, never added to HAYS, CITY OF's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for HAYS, CITY OF is from Jun 2022.
In EPA's 2023–2026 UCMR 5 testing, HAYS, CITY OF measured lithium at up to 105 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 Kansas
Hays Water Service Areas
What these numbers actually mean for Hays, KS
We read Hays, KS’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.
- 4 contaminants above EPA MCLGs and 1 contaminant with an EPA health goal detected in some samples (no level on file)
- 89 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Hays
Based on Hays's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Waterdrop
G3 P600
NSF Certified:
Flow Rate
600 gpm
Daily Production
600 gpd
Highlights:
- Space-saving design
- Good contaminant reduction
- NSF-58 certified
Removes 4 contaminants:
Waterdrop
G3 P800
NSF Certified:
Flow Rate
800 gpm
Daily Production
800 gpd
Highlights:
- High water production rate
- Modern design
- No tank needed
- NSF-42, NSF-53, NSF-58, NSF-372 certified
Removes 15 contaminants:
+10 more
Chlorine, Copper, Manganese, Potassium, Selenium, Total Dissolved Solids, Nitrate, Chloride, Sodium, Strontium
Verify Your Water Quality with Independent Testing
With 4 contaminants above EPA MCLGs and 1 contaminant 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
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.
With 4 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 Hays's water readings can explain
Utility-reported data for Hays includes iron, sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Hays, 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 Hays? Public-water results do not apply to private wells. See Ellis County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Hays
Hays's tap water measures 8.9 grains per gallon (153.0 mg/L) — hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 8.9 gpg water in Hays — 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 Kansas as a whole, read water softener cost in Kansas — priced against the plumber wage published for the state.
Frequently Asked Questions About Hays Tap Water
Hays's water has 4 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Hays's water.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach HAYS, CITY OF. For a problem with your water now (discolored water, no water, low pressure, a leak), contact HAYS, CITY OF directly.
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