C43/100
Gridley Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,400 residents · Kansas
What's In Gridley's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
COFFEY CO RWD 2
Population Served
1,146
Water Source
Purchased Surface Water
System ID
KS2003102
COFFEY CO RWD 2E
Population Served
1,254
Water Source
Purchased Surface Water
System ID
KS2003110
Frequently Asked Questions About Gridley Water
Is Gridley tap water safe to drink?
Gridley, Kansas tap water receives a grade of C (43/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 38 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Gridley's water?
Of the 1 contaminants tested in Gridley's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Gridley have any water quality violations?
Yes, Gridley has 38 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, Other, MR. 20 of these are health-based violations, which are the most serious category.
Do I need a water filter in Gridley?
Gridley water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Gridley's tap water come from?
Gridley's drinking water is sourced from purchased surface water and supplied by COFFEY CO RWD 2 and 1 other water system(s). The system serves approximately 2,400 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Gridley's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Gridley's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Gridley's water compare to other cities in Kansas?
Gridley's water quality score of 43/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Kansas state page to see how all cities in the state compare.
What should I do if I'm concerned about Gridley's water quality?
If you have concerns about Gridley's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (COFFEY CO RWD 2) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.