Water system

Kingfisher

D
Oklahoma EPA ID OK2003702 5,073 people Groundwater

What this means for you

Is it safe to drink right now?
Based on the latest EPA data, Kingfisher has no unresolved health-based violations from the past year. Water that meets federal standards is generally considered safe to drink for most healthy people.
Should I use a filter?
It's worth considering. Kingfisher has a D because of its violation record over the past 5 years (17 health-based), even though nothing is flagged as unresolved in the last year. A filter matched to the contaminants in its violation history is a reasonable precaution.
What kind of filter?
See matched standards and product picks.

This is general information from public EPA data, not medical advice. Lead often comes from a home’s own pipes, so only a test of your tap can tell your exposure. If you are pregnant, caring for an infant, or have a weakened immune system, ask your doctor or health department.

Summary: 17 health-based violations in the last 5 years; 167 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
EPA data snapshot 2026Q3. Grade is TapWaterZip's own score — see methods.

PFAS (“forever chemicals”), EPA UCMR 5

No PFAS detected in any UCMR 5 sample.

5 PFAS tested and not detected

HFPO-DA, PFOA, PFNA, PFHxS, PFOS (2 samples each, below EPA minimum reporting levels).

Hazard Index (PFHxS, PFNA, GenX, PFBS): 0 (limit 1.0, proposed for repeal).

Averages are per sampling location across UCMR 5 samples (non-detects counted as 0), approximating the rule’s running annual average. Not an official compliance determination; PFOA/PFOS MCL compliance begins April 26, 2029.

Lithium (also tested in UCMR 5, not a PFAS; no federal limit): highest location average 14.7 ppb.

Lead and copper

Lead 90th percentile0 ppb2024-12-31
Current action level15 ppbLCRI lowers to 10 ppb on Nov 1, 2027

Violations (last 5 years)

BeganTypeContaminant / ruleStatus
2026-04-01Missed or late testing/reportingTTHMResolved
2026-04-01Contaminant above legal limitTTHMArchived
2026-01-01Contaminant above legal limitTTHMArchived
2025-10-01Contaminant above legal limitTTHMArchived
2025-07-01Contaminant above legal limitTTHMArchived
2025-07-01Contaminant above legal limitTTHMArchived
2025-04-01Contaminant above legal limitTTHMArchived
2025-04-01Missed or late testing/reportingTotal Haloacetic Acids (HAA5)Resolved
2025-04-01Contaminant above legal limitTTHMArchived
2025-01-01Contaminant above legal limitTTHMArchived
2025-01-01Missed or late testing/reporting1,2-DIBROMO-3-CHLOROPROPANEResolved
2025-01-01Missed or late testing/reportingETHYLENE DIBROMIDEResolved
2024-12-30Missed or late testing/reportingTTHMResolved
2024-10-17Required treatment not doneLEAD AND COPPER RULE REVISIONSResolved
2024-10-17Reporting problemLEAD AND COPPER RULE REVISIONSResolved
2024-10-01Contaminant above legal limitTTHMArchived
2024-10-01Missed or late testing/reportingHeptachlor epoxideResolved
2024-10-01Missed or late testing/reportingHeptachlorResolved
2024-10-01Missed or late testing/reportingMethoxychlorResolved
2024-10-01Missed or late testing/reportingBHC-GAMMAResolved
2024-10-01Missed or late testing/reportingHEXACHLOROBENZENEResolved
2024-10-01Missed or late testing/reportingHexachlorocyclopentadieneResolved
2024-10-01Contaminant above legal limitTTHMArchived
2024-10-01Missed or late testing/reportingEndrinResolved
2024-07-01Missed or late testing/reportingCarbofuranResolved

Filters matched to this water

FILTER PICKS

Look for filters certified (NSF, IAPMO or WQA) to these standards for the specific contaminant. Buttons open the maker’s page or an Amazon search; use “Check NSF listing” to verify a model’s claims. No affiliate links yet — grades are never sold.

Total Trihalomethanes (TTHM)

NSF/ANSI 53 (VOC claim)
Carbon block undersink (VOC claim) ~$80–150
Choose a filter whose NSF/ANSI 53 certificate lists VOCs / TTHM.
Search on Amazon →
Check NSF listing · Not an affiliate link · disclosure

Chlorine/chloramine taste

NSF/ANSI 42
Aquasana Clean Water Pitcher ~$35
Pitcher for chlorine taste/odor; check the NSF/ANSI 42 listing for the exact model.
Search on Amazon →
Check NSF listing · Not an affiliate link · disclosure
Brita Elite Filter ~$20–40
Common faucet/pitcher option; confirm the 42 claim on the box.
View on Brita →
Check NSF listing · Not an affiliate link · disclosure

Annual water quality report

Utilities must publish a Consumer Confidence Report every year by July 1. Find it on the utility’s website or ask them directly; EPA explains how.

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