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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 JUNCTION CITY, CITY OF • Updated September 2026
Grade F — based on EPA compliance records, lead testing and PFAS monitoring
JUNCTION CITY, CITY OF has serious issues in EPA's records: repeated health-based violations, unresolved violations, PFAS above the federal limit or lead near the action level. We recommend filtering drinking water.
Junction City, KS tap water is legal to drink but grades F on EPA's records, mainly because of 5 health-based EPA violations in the last five years. A certified filter matched to that finding is a reasonable precaution.
Junction City, KS tap water is legal to drink but grades F on EPA's records, mainly because of 5 health-based EPA violations in the last five years. A certified filter matched to that finding is a reasonable precaution.
JUNCTION CITY, CITY OF'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 JUNCTION CITY, CITY OF (2023-04-25 to 2023-11-28) were at or above the reporting limit of roughly 3–5 ppt.
JUNCTION CITY, CITY OF has 18 violations on file since 2016: 5 health-based in the last five years and 5 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
JUNCTION CITY, CITY OF reports groundwater as its primary source and serves about 19,167 people (EPA PWSID KS2006108).
We recommend one. Check which contaminant the violations involved (table above) and choose a filter certified for it.
Compare filter options for your Junction City tap water
JUNCTION CITY, CITY OF has 5 health-based EPA violations in the last five years.
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JUNCTION CITY, CITY OF · SDWIS records since 2016 · 5-year window starts 2021-09-13
EPA records 5 health-based violations for this system in the last five years, all of which are marked resolved or archived. Health-based violations mean a contaminant exceeded its Maximum Contaminant Level (MCL) or a required treatment step was not met.
| Violation | Category | Compliance period | Status |
|---|---|---|---|
| Maximum Contaminant Level Violation, AverageTTHM | MCL exceeded | 2024-07-01 → 2024-09-30 | Resolvedreturned 2024-09-30 |
| Maximum Contaminant Level Violation, AverageTTHM | MCL exceeded | 2024-04-01 → 2024-06-30 | Resolvedreturned 2024-06-30 |
| Maximum Contaminant Level Violation, AverageTTHM | MCL exceeded | 2022-04-01 → 2022-06-30 | Resolvedreturned 2022-06-30 |
| Maximum Contaminant Level Violation, AverageTTHM | MCL exceeded | 2022-01-01 → 2022-03-31 | Resolvedreturned 2022-03-31 |
| Maximum Contaminant Level Violation, AverageTTHM | MCL exceeded | 2021-10-01 → 2021-12-31 | Resolvedreturned 2021-12-31 |
| Notification, Known or Potential LSLLEAD AND COPPER RULE REVISIONS | Reporting | 2025-07-02 | Unaddressed |
| Monitoring and Reporting (DBP)TTHM | Monitoring & reporting | 2024-04-01 → 2024-06-30 | Resolvedreturned 2024-06-30 |
| Monitoring and Reporting (DBP)Total Haloacetic Acids (HAA5) | Monitoring & reporting | 2024-04-01 → 2024-06-30 | Resolvedreturned 2024-06-30 |
| Monitoring and Reporting (DBP)TTHM | Monitoring & reporting | 2024-01-01 → 2024-03-31 | Resolvedreturned 2024-03-31 |
| Monitoring and Reporting (DBP)Total Haloacetic Acids (HAA5) | Monitoring & reporting | 2024-01-01 → 2024-03-31 | Resolvedreturned 2024-03-31 |
| Public Notification Violation for NPDWR ViolationPublic Notice | Other | 2022-06-20 | Resolvedreturned 2022-06-01 |
| Public Notification Violation for NPDWR ViolationPublic Notice | Other | 2022-06-07 | Unaddressed |
| Public Notification Violation for NPDWR ViolationPublic Notice | Other | 2022-01-07 | Unaddressed |
| Failure Submit IDSE/Subpart V Plan RptTTHM | Monitoring & reporting | 2021-07-01 | Resolvedreturned 2022-11-07 |
| Lead Consumer NoticeLead and Copper Rule | Monitoring & reporting | 2020-12-30 | Resolvedreturned 2022-05-25 |
| Consumer Confidence Report Inadequate ReportingConsumer Confidence Rule | Other | 2016-07-01 | Resolvedreturned 2016-07-26 |
| Public Notification Violation for NPDWR ViolationPublic Notice | Other | 2016-02-20 | Resolvedreturned 2016-02-22 |
| Public Notification Violation for NPDWR ViolationPublic Notice | Other | 2016-02-12 | Resolvedreturned 2017-01-11 |
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 JUNCTION CITY, CITY OF
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 JUNCTION CITY, CITY OF 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 |
| 2018-01-01 → 2020-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2017-01-01 → 2017-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2015-01-01 → 2015-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2012-01-01 → 2014-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2009-01-01 → 2011-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2008-01-01 → 2010-12-31 | 0 ppb | Well below the 15 ppb action level |
| 2005-01-01 → 2007-12-31 | 1.5 ppb | Well below the 15 ppb action level |
| 2000-01-01 → 2000-12-31 | 1 ppb | Well below the 15 ppb action level |
| 1997-01-01 → 1997-12-31 | 1.2 ppb | Well below the 15 ppb action level |
| 1994-01-01 → 1994-12-31 | 1.7 ppb | Well below the 15 ppb action level |
| 1993-01-01 → 1993-06-30 | 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, 2023-04-25 to 2023-11-28 · 58 PFAS results at entry points to the distribution system
No PFAS detected. None of the 58 UCMR5 PFAS results for JUNCTION CITY, CITY OF 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.
Lithium (also monitored under UCMR5, not a PFAS): detected in 2 of 2 samples, max 24.2 µg/L. There is no federal limit for lithium.
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 JUNCTION CITY, CITY OF · finished water only · dated data, released 2024
These are the regulated-contaminant samples JUNCTION CITY, CITY OF reported to its state between 2012 and 2019 — the most recent nationwide sample-level dataset EPA has published. Total trihalomethanes (TTHM) 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 | 2 | 2.7 µg/L | 3 µg/L | 10 µg/LMCL | Within MCL |
| Nitrate (as N) | 10 | 1.46 mg/L | 1.9 mg/L | 10 mg/LMCL | Within MCL |
| Fluoride | 3431 detects | 0.33 mg/L | 0.59 mg/L | 4 mg/LMCL | Within MCL |
| Chromium (total) | 2 | 2.45 µg/L | 3.3 µg/L | 100 µg/LMCL | Within MCL |
| Radium-226/228 | 10 detects | 0 pCi/L | ND | 5 pCi/LMCL | Not detected |
| Total trihalomethanes (TTHM) | 107 | 63.608 µg/L | 120 µg/L | 80 µg/LMCL (LRAA) | 15 single samples over MCL; average within limit |
| Haloacetic acids (HAA5) | 106 | 17.304 µg/L | 32 µg/L | 60 µg/LMCL (LRAA) | Within MCL |
| Lead (tap samples) | 914 detects | 0.095 µg/L | 3.1 µg/L | 15 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
| Copper (tap samples) | 9189 detects | 12.752 µg/L | 100 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)
A point-of-use (under-sink) system typically runs $200-$600 installed; whole-house treatment $1,000-$3,000+ depending on flow and what has to come out. Tell us where you are and a certified water-treatment installer serving Junction City will follow up - no obligation.
JUNCTION CITY, CITY OF · 8,637 service lines inventoried · Q2 2026 snapshot
JUNCTION CITY, CITY OF reports 8,416 service lines that are lead or galvanized-requiring-replacement (97% of the lines it has inventoried), plus 216 lines whose material is still unknown. A lead service line is the pipe between the water main and a building, so treated water can pick up lead after it leaves the plant — which city-level testing does not capture. Under EPA's Lead and Copper Rule Improvements, utilities must replace lead lines within 10 years starting in 2027.
Source: EPA SDWIS Service Line Inventory (Q2 2026) · PWS ID KS2006108 · See all Kansas 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 Junction City 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 Junction City 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 Junction City 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 Junction City residents measured at their own tap (ZIPs 66441). 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 Junction City 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.
Junction City ranks #20 of 20 graded Kansas cities.
Deep-dive guides for the specific contaminants EPA data flagged in Junction City's water, with removal options for each.
Junction City, KS tap water is legal to drink but grades F on EPA's records, mainly because of 5 health-based EPA violations in the last five years. A certified filter matched to that finding is a reasonable precaution.
JUNCTION CITY, CITY OF'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 JUNCTION CITY, CITY OF (2023-04-25 to 2023-11-28) were at or above the reporting limit of roughly 3–5 ppt.
JUNCTION CITY, CITY OF has 18 violations on file since 2016: 5 health-based in the last five years and 5 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
JUNCTION CITY, CITY OF reports groundwater as its primary source and serves about 19,167 people (EPA PWSID KS2006108).
We recommend one. Check which contaminant the violations involved (table above) and choose a filter certified for it.
JUNCTION CITY, CITY OF has 5 health-based EPA violations in the last five years.
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Find the right filter for your Junction City water quality needs:
Tap water is one piece of the picture — our sister sites cover the rest for Junction City, KS.
County radon prediction and EPA zone for homes around Junction City.
Arsenic and nitrate risk for homes on a well instead of city water.
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