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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
EPA records for KENAI WATER SYSTEM • Updated September 2026
Grade A — based on EPA compliance records, lead testing and PFAS monitoring
KENAI WATER SYSTEM has a clean recent record: no health-based violations in the last five years and no lead, PFAS or historical monitoring result that costs it more than a few points.
Yes — by EPA's records Kenai, AK tap water is safe to drink and earns an A. The grade rests on arsenic averaging 19.8 ug/l against a 10 ug/l limit in 2012–2019 samples (9 over the limit). Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
Yes — by EPA's records Kenai, AK tap water is safe to drink and earns an A. The grade rests on arsenic averaging 19.8 ug/l against a 10 ug/l limit in 2012–2019 samples (9 over the limit). Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
KENAI WATER SYSTEM's most recent Lead and Copper Rule result (2021-01-01 to 2023-12-31) was 0 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for KENAI WATER SYSTEM (2024-04-09 to 2024-10-07) were at or above the reporting limit of roughly 3–5 ppt.
KENAI WATER SYSTEM has 130 violations on file since 2016: 0 health-based in the last five years and 0 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
KENAI WATER SYSTEM reports groundwater as its primary source and serves about 5,700 people (EPA PWSID AK2240448).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles arsenic and improves taste.
Compare filter options for your Kenai tap water
Historical monitoring (2012–2019) shows arsenic near or above the EPA limit in Kenai.
Unsure which contaminants to treat? Compare home kits and certified lab testing before buying.
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KENAI WATER SYSTEM · SDWIS records since 2016 · 5-year window starts 2021-09-13
EPA records no health-based violations for this system in the last five years.
| Violation | Category | Compliance period | Status |
|---|---|---|---|
| Consumer Confidence Report Inadequate ReportingConsumer Confidence Rule | Other | 2021-10-01 | Resolvedreturned 2022-01-12 |
| Monitoring and Reporting (DBP)Total Haloacetic Acids (HAA5) | Monitoring & reporting | 2020-09-01 → 2021-08-31 | Resolvedreturned 2021-08-31 |
| Monitoring and Reporting (DBP)TTHM | Monitoring & reporting | 2020-09-01 → 2021-08-31 | Resolvedreturned 2021-08-31 |
| Monitoring, RegularCYANIDE | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularFluoride | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularMercury | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularAntimony, Total | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularBeryllium, Total | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularArsenic | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Archived |
| Monitoring, RegularChromium | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularCadmium | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularThallium, Total | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularNickel | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Follow-up Or Routine LCR Tap M/RLead and Copper Rule | Monitoring & reporting | 2020-01-01 | Resolvedreturned 2020-02-19 |
| Monitoring, RegularBarium | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring, RegularSelenium | Monitoring & reporting | 2020-01-01 → 2022-12-31 | Resolvedreturned 2022-10-12 |
| Monitoring and Reporting (DBP)Chlorine | Monitoring & reporting | 2018-07-01 → 2018-09-30 | Resolvedreturned 2018-09-24 |
| Monitoring and Reporting (DBP)Chlorine | Monitoring & reporting | 2018-04-01 → 2018-06-30 | Resolvedreturned 2018-06-30 |
| Consumer Confidence Report Complete Failure to ReportConsumer Confidence Rule | Other | 2017-07-01 | Resolvedreturned 2017-09-05 |
| Monitoring, Regular1,2,4-Trichlorobenzene | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
| Monitoring, Regularcis-1,2-Dichloroethylene | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
| Monitoring, RegularDICHLOROMETHANE | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
| Monitoring, Regularp-Dichlorobenzene | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
| Monitoring, RegularVinyl chloride | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
| Monitoring, RegularCarbon tetrachloride | Monitoring & reporting | 2017-04-01 → 2017-06-30 | Resolvedreturned 2017-06-30 |
Showing 25 of 130 violations on file. Full record on EPA ECHO.
Source: ECHO SDWA bulk download (SDWA_VIOLATIONS_ENFORCEMENT.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-13)
EPA Lead and Copper Rule 90th-percentile results reported by KENAI WATER SYSTEM
Well below the 15 ppb action level. In the most recent monitoring period on file (2021-01-01 to 2023-12-31), 90% of the homes KENAI WATER SYSTEM sampled had lead at or below 0 ppb.
EPA's action level is 15 ppb (dropping to 10 ppb under the 2024 Lead and Copper Rule Improvements). There is no safe level of lead; the 90th-percentile figure describes the system, not your tap — homes with lead service lines or pre-1986 plumbing can be higher.
| Monitoring period | Lead 90th percentile | vs 15 ppb action level |
|---|---|---|
| 2021-01-01 → 2023-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2020-01-01 → 2022-12-31 | 1.45 ppb | Well below the 15 ppb action level |
| 2011-01-01 → 2013-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2008-01-01 → 2010-12-31 | 3.48 ppb | Well below the 15 ppb action level |
| 2005-01-01 → 2007-12-31 | 3.2 ppb | Well below the 15 ppb action level |
| 2002-01-01 → 2004-12-31 | 4.7 ppb | Well below the 15 ppb action level |
| 2001-07-01 → 2001-12-31 | 15 ppb | Above the 15 ppb action level |
| 1999-01-01 → 2001-12-31 | 12 ppb | Below the action level, but detectable |
| 1998-07-01 → 1998-12-31 | 7 ppb | Below the action level, but detectable |
| 1996-01-01 → 1998-12-31 | 7 ppb | Below the action level, but detectable |
| 1995-01-01 → 1995-12-31 | 2 ppb | Well below the 15 ppb action level |
| 1994-07-01 → 1994-12-31 | 3 ppb | Well below the 15 ppb action level |
Source: ECHO SDWA bulk download (SDWA_LCR_SAMPLES.csv, SDWIS 2026Q2, file dated 2026-07-09, fetched 2026-09-13)
EPA UCMR5 monitoring, 2024-04-09 to 2024-10-07 · 58 PFAS results at entry points to the distribution system
No PFAS detected. None of the 58 UCMR5 PFAS results for KENAI WATER SYSTEM were at or above the method reporting limit. Reporting limits are about 3–5 ppt, so “not detected” means below that threshold — not proven zero.
| Compound | Detects / samples | Max (ppt) | Reporting limit | EPA MCL |
|---|---|---|---|---|
| PFOA | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFOS | 0 / 2 | < 4 | 4 ppt | 4 ppt |
| PFHxS | 0 / 2 | < 3 | 3 ppt | 10 ppt |
| PFNA | 0 / 2 | < 4 | 4 ppt | 10 ppt |
| HFPO-DA | 0 / 2 | < 5 | 5 ppt | 10 ppt |
| PFBS | 0 / 2 | < 3 | 3 ppt | hazard index only |
“< 4 ppt” means below the laboratory reporting limit, not zero. ppt = parts per trillion (ng/L). Results are for finished water leaving the treatment plant.
What PFAS are and how to remove them →
Source: UCMR5 occurrence data, EPA Data Summary July 2026 (UCMR5_All.txt)
EPA Six-Year Review 4 compliance samples for KENAI WATER SYSTEM · finished water only · dated data, released 2024
These are the regulated-contaminant samples KENAI WATER SYSTEM reported to its state between 2012 and 2019 — the most recent nationwide sample-level dataset EPA has published. Arsenic is flagged below; the status column explains why. Treat this as history, not today's tap water.
| Contaminant | Samples | Average | Max | EPA limit | Status |
|---|---|---|---|---|---|
| Arsenic | 12 | 19.84 µg/L | 29 µg/L | 10 µg/LMCL | 9 of 12 samples over MCL |
| Fluoride | 10 detects | 0 mg/L | ND | 4 mg/LMCL | Not detected |
| Chromium (total) | 10 detects | 0 µg/L | ND | 100 µg/LMCL | Not detected |
| Radium-226/228 | 8 | 0.522 pCi/L | 1.09 pCi/L | 5 pCi/LMCL | Within MCL |
| Total trihalomethanes (TTHM) | 76 detects | 26.129 µg/L | 44.9 µg/L | 80 µg/LMCL (LRAA) | Within MCL |
| Haloacetic acids (HAA5) | 87 detects | 15.2 µg/L | 23 µg/L | 60 µg/LMCL (LRAA) | Within MCL |
| Lead (tap samples) | 202 detects | 0.223 µg/L | 2.31 µg/L | 15 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
| Copper (tap samples) | 2019 detects | 26.021 µg/L | 69.5 µg/L | 1300 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
Averages count non-detects as zero. TTHM and HAA5 limits are locational running annual averages, so a single high sample is not a violation — we grade those on the average only. Lead and copper rows are individual tap samples and are shown for context; compliance (and our score) uses the 90th-percentile result above. LRAA = locational running annual average; ND = not detected.
Source: SYR4 Six-Year Review compliance monitoring data 2012–2019 (released 2024-03)
KENAI WATER SYSTEM · 2,054 service lines inventoried · Q2 2026 snapshot
KENAI WATER SYSTEM reports no lead or galvanized-requiring-replacement service lines and has classified 100% of its 2,054 lines as non-lead. Lead can still come from pre-1986 plumbing and fixtures inside a home.
Source: EPA SDWIS Service Line Inventory (Q2 2026) · PWS ID AK2240448 · See all Alaska lead service lines. We may earn a commission from filters and test kits, at no extra cost to you.
Groundwater systems draw from wells; naturally occurring arsenic, nitrate, radium and uranium are the readings to watch, along with PFAS near industrial or military sites.
How to test your tap water and the treatment options that actually fit Kenai homes
The most reliable way to know what is actually coming out of your tap is a certified mail-in lab test. City-wide EPA data (like the report above) reflects the water leaving the treatment plant, but contaminants such as lead and copper can be picked up from your own service line and household plumbing — so the water at your Kenai faucet can differ from the system average. A state-certified lab measures dozens of contaminants at once with results you can trust; you can also find one near you through the EPA's certified-lab list at epa.gov/dwlabcert. Hardware-store test strips are cheaper and instant, but they only screen for a few basics (chlorine, hardness, pH, and a rough lead pass/fail) and are far less accurate — treat them as a first look, not a diagnosis.
Match the treatment to what your test finds. Reverse osmosis (RO) removes the widest range of contaminants — lead, arsenic, nitrate, PFAS, and dissolved solids — which makes an under-sink reverse osmosis system the most thorough choice for Kenai households with heavy-metal or PFAS concerns. If your main issue is taste, odor, or chlorine, an activated carbon filter (pitcher, faucet, or under-sink) is simpler and cheaper and handles chlorine and many organic compounds well, though carbon alone does not remove arsenic, nitrate, or most PFAS. NSF-certified pitchers rated for lead reduction are the easiest way to start today while you decide on a permanent setup.
We may earn a commission from testing kits and filters purchased through these links, at no extra cost to you.
What Kenai residents measured at their own tap. All reader results →
Reader submissions are unverified and shown separately from EPA data. They reflect one tap on one day, not the utility's compliance record.
No reader results for Kenai yet - yours would be the first. A hardness or TDS number from a $10 strip kit is enough to start the map.
Help build the first reader-sourced water map. Enter whatever your test strip, TDS pen or lab report shows - one number is enough.
Kenai ranks #4 of 10 graded Alaska cities.
Deep-dive guides for the specific contaminants EPA data flagged in Kenai's water, with removal options for each.
Yes — by EPA's records Kenai, AK tap water is safe to drink and earns an A. The grade rests on arsenic averaging 19.8 ug/l against a 10 ug/l limit in 2012–2019 samples (9 over the limit). Lead from your own service line or plumbing is the main risk city-level data cannot see, so homes built before 1986 should still test at the tap.
KENAI WATER SYSTEM's most recent Lead and Copper Rule result (2021-01-01 to 2023-12-31) was 0 ppb at the 90th percentile, below EPA's 15 ppb action level. Because lead usually comes from service lines and household plumbing, homes built before 1986 should still test at the tap.
No. None of the 58 UCMR5 PFAS results for KENAI WATER SYSTEM (2024-04-09 to 2024-10-07) were at or above the reporting limit of roughly 3–5 ppt.
KENAI WATER SYSTEM has 130 violations on file since 2016: 0 health-based in the last five years and 0 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
KENAI WATER SYSTEM reports groundwater as its primary source and serves about 5,700 people (EPA PWSID AK2240448).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles arsenic and improves taste.
Historical monitoring (2012–2019) shows arsenic near or above the EPA limit in Kenai.
Best for Arsenic Removal
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Reverse osmosis removes arsenic to safe levels — the EPA-recommended treatment for arsenic (carbon pitchers don't remove it).
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Filters rated for arsenic reduction
Waterdrop's arsenic collection — arsenic needs RO-class treatment, and these are the systems built for it.
Shop Filters Rated for Arsenic →Whole-Home Filtration System
Whole-house system — treats every tap at the source
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Test your tap water first, so you filter for what's actually in it.
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Based on contaminants detected in your water, these resources may be helpful:
Find the right filter for your Kenai water quality needs:
Tap water is one piece of the picture — our sister sites cover the rest for Kenai, AK.
County radon prediction and EPA zone for homes around Kenai.
Understand your water better with our in-depth guides on contaminants, filtration, and water safety.