Warrenton Tap Water Quality Report
Limited testing on file — only PFAS results from EPA's UCMR 5 for WARRENTON PWS. No other contaminant results are on file for WARRENTON PWS; check its latest Consumer Confidence Report for its current test results.
Other systems listed for Warrenton with results above guidelines: ST CHARLES COUNTY PWSD 2 WARREN (4 above guidelines)
People Served
8,208
Health-based violations since 2020
0
WARRENTON PWS. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Sep 2023 · WARRENTON PWS
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Warrenton Tap Water Safe to Drink?
Only PFAS results from EPA's UCMR 5 are on file for Warrenton's own water system, so everything else listed below has no result behind it. Testing your own water is the way to find out what your tap is actually delivering.
WARRENTON PWS, Warrenton's water system, serves 8,208 people. 2 other systems are listed for Warrenton. Each system's results are listed under its own name, never added to WARRENTON PWS's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for WARRENTON PWS is from Sep 2023.
In EPA's 2023–2026 UCMR 5 testing, WARRENTON PWS measured lithium at up to 77.6 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 Missouri
Warrenton Water Service Areas
What these numbers actually mean for Warrenton, MO
We read Warrenton, MO’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.
- 23 contaminants listed, only PFAS results from EPA's UCMR 5 on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Warrenton's water
WARRENTON PWS
PWSID MO6010834
No fluoride level in our data for WARRENTON PWS. Your utility's annual water quality report (CCR) lists it.
ST CHARLES COUNTY PWSD 2 WARREN
PWSID MO6024629
ST CHARLES COUNTY PWSD 2 WARREN reported 1.39 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.
LINN ACRES MOBILE HOME PARK
PWSID MO2041594
LINN ACRES MOBILE HOME PARK reported 0.26 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
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General-Purpose Water Filters for Warrenton
Warrenton'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:
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
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 Warrenton's water readings can explain
We publish a city-level hardness figure for Warrenton, 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 Warrenton? Public-water results do not apply to private wells. See Warren County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Warrenton
Warrenton's tap water has an estimated 12.0 grains per gallon (205.0 mg/L, county sampling in Warren 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 12.0 gpg water in Warrenton — 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 Missouri as a whole, read water softener cost in Missouri — priced against the plumber wage published for the state.
Frequently Asked Questions About Warrenton Tap Water
Limited testing on file — only PFAS results from EPA's UCMR 5 for WARRENTON PWS. No other contaminant results are on file for WARRENTON PWS; check its latest Consumer Confidence Report for its current test results.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach WARRENTON PWS. For a problem with your water now (discolored water, no water, low pressure, a leak), contact WARRENTON PWS directly.
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