Grain Valley Tap Water Quality Report
Grain Valley's water has 2 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
1 other system serving parts of Grain Valley reports results above guidelines — check which system bills you. JACKSON COUNTY PWSD 17 (1 above guidelines)
Other systems listed for Grain Valley with results above guidelines: JACKSON COUNTY PWSD 16 (1 above guidelines)
Water system
GRAIN VALLEY PWS
1 other system also serves parts of Grain Valley. 1 other system is listed for Grain Valley. See their figures
People Served
13,684
Health-based violations since 2020
0
GRAIN VALLEY PWS. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Jul 2025 · GRAIN VALLEY PWS
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Grain Valley 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. Grain Valley's water has 2 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
GRAIN VALLEY PWS, Grain Valley's water system, serves 13,684 people. 1 other system also serves parts of Grain Valley. 1 other system is listed for Grain Valley. Each system's results are listed under its own name, never added to GRAIN VALLEY PWS's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for GRAIN VALLEY PWS is from Jul 2025.
In EPA's 2023–2026 UCMR 5 testing, GRAIN VALLEY PWS measured lithium at up to 38.6 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
Grain Valley Water Service Areas
What these numbers actually mean for Grain Valley, MO
We read Grain Valley, 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.
- 2 contaminants above EPA MCLGs and 4 contaminants with an EPA health goal detected in some samples (no level on file)
- 43 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Grain Valley
Based on Grain Valley'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 Grain Valley's water readings can explain
We publish a city-level hardness figure for Grain Valley, 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 Grain Valley? Public-water results do not apply to private wells. See Jackson County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Grain Valley
Grain Valley's tap water has an estimated 18.1 grains per gallon (309.5 mg/L, county sampling in Jackson 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 18.1 gpg water in Grain Valley — 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 Grain Valley Tap Water
Grain Valley'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 GRAIN VALLEY PWS. For a problem with your water now (discolored water, no water, low pressure, a leak), contact GRAIN VALLEY PWS directly.
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