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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 WASILLA WATER SYSTEM • Updated September 2026
Grade C — based on EPA compliance records, lead testing and PFAS monitoring
WASILLA WATER SYSTEM has a mixed record — read the reasons below; the deductions come from real EPA violations, lead results or PFAS detections, not from a template.
Wasilla's tap water grades C on EPA's records. A certified filter matched to those issues is a sensible precaution.
Wasilla grades C. The water is legal to drink, but a certified filter matched to these findings is a reasonable precaution.
WASILLA WATER SYSTEM's most recent Lead and Copper Rule result (2022-01-01 to 2024-12-31) was 3.1 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.
Yes. EPA's UCMR5 sampling (2023-08-15 to 2024-03-18) detected PFHxS, all below federal MCLs. Reverse osmosis and certified activated-carbon filters reduce PFAS.
WASILLA WATER SYSTEM has 77 violations on file since 2016: 0 health-based in the last five years and 10 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
WASILLA WATER SYSTEM reports groundwater as its primary source and serves about 18,492 people (EPA PWSID AK2224646).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles PFAS, arsenic and improves taste.
Want to know what's really in your Wasilla tap water?
PFHxS were detected in Wasilla's water at low levels in 2023–2025 EPA monitoring.
Tap Score certified lab · Amazon. We may earn a commission, at no extra cost to you.
WASILLA WATER SYSTEM · SDWIS records since 2016 · 5-year window starts 2021-09-07
EPA records no health-based violations for this system in the last five years. The 10 violations on file in that window are monitoring or reporting paperwork issues, not measured contaminant exceedances.
| Violation | Category | Compliance period | Status |
|---|---|---|---|
| Monitoring, Routine (RTCR)Revised Total Coliform Rule | Monitoring | 2025-05-01 → 2025-05-31 | Resolvedreturned 2025-05-31 |
| Monitoring, RegularMercury | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularThallium, Total | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularAntimony, Total | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularNickel | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularCadmium | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularBarium | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularBeryllium, Total | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularChromium | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularSelenium | Monitoring & reporting | 2023-01-01 → 2025-12-31 | Archived |
| Monitoring, RegularArsenic | Monitoring & reporting | 2021-06-01 → 2021-06-30 | Resolvedreturned 2021-06-30 |
| Monitoring, Regular1,2,4-Trichlorobenzene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularXylenes, Total | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularDICHLOROMETHANE | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regularo-Dichlorobenzene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regularp-Dichlorobenzene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularVinyl chloride | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regular1,1-Dichloroethylene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regular1,2-Dichloroethane | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularCarbon tetrachloride | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regular1,2-Dichloropropane | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularTrichloroethylene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, Regular1,1,2-Trichloroethane | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularCHLOROBENZENE | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
| Monitoring, RegularTetrachloroethylene | Monitoring & reporting | 2020-07-01 → 2020-09-30 | Resolvedreturned 2020-09-30 |
Showing 25 of 77 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 2026-09-06)
EPA Lead and Copper Rule 90th-percentile results reported by WASILLA WATER SYSTEM
Well below the 15 ppb action level. In the most recent monitoring period on file (2022-01-01 to 2024-12-31), 90% of the homes WASILLA WATER SYSTEM sampled had lead at or below 3.1 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 |
|---|---|---|
| 2022-01-01 → 2024-12-31 | 3.1 ppb | Well below the 15 ppb action level |
| 2021-01-01 → 2021-12-31 | 4.3 ppb | Well below the 15 ppb action level |
| 2020-01-01 → 2020-12-31 | 3.39 ppb | Well below the 15 ppb action level |
| 2019-01-01 → 2019-12-31 | 2.2 ppb | Well below the 15 ppb action level |
| 2018-07-01 → 2018-12-31 | 5 ppb | Below the action level, but detectable |
| 2018-01-01 → 2018-06-30 | 3.1 ppb | Well below the 15 ppb action level |
| 2013-01-01 → 2015-12-31 | 2.9 ppb | Well below the 15 ppb action level |
| 2010-01-01 → 2012-12-31 | 4.7 ppb | Well below the 15 ppb action level |
| 2009-01-01 → 2009-12-31 | 4.15 ppb | Well below the 15 ppb action level |
| 2006-01-01 → 2008-12-31 | 4.9 ppb | Well below the 15 ppb action level |
| 2003-01-01 → 2005-12-31 | 3.9 ppb | Well below the 15 ppb action level |
| 2000-01-01 → 2002-12-31 | 4.6 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 2026-09-06)
EPA UCMR5 monitoring, 2023-08-15 to 2024-03-18 · 290 PFAS results at entry points to the distribution system
PFHxS detected at low levels; no compound was at or above its federal MCL. Detections below the MCL are common in surface-water systems and are reported here exactly as EPA published them.
| Compound | Detects / samples | Max (ppt) | Reporting limit | EPA MCL |
|---|---|---|---|---|
| PFOA | 0 / 10 | < 4 | 4 ppt | 4 ppt |
| PFOS | 0 / 10 | < 4 | 4 ppt | 4 ppt |
| PFHxS | 2 / 10 | 4.2 | 3 ppt | 10 ppt |
| PFNA | 0 / 10 | < 4 | 4 ppt | 10 ppt |
| HFPO-DA | 0 / 10 | < 5 | 5 ppt | 10 ppt |
| PFBS | 0 / 10 | < 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 → · Best filters for PFAS →
Source: UCMR5 occurrence data, EPA Data Summary July 2026 (UCMR5_All.txt)
EPA Six-Year Review 4 compliance samples for WASILLA WATER SYSTEM · finished water only · dated data, released 2024
These are the regulated-contaminant samples WASILLA 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 | 4745 detects | 6.734 µg/L | 21 µg/L | 10 µg/LMCL | 10 of 47 samples over MCL |
| Fluoride | 51 detects | 0.023 mg/L | 0.113 mg/L | 4 mg/LMCL | Within MCL |
| Chromium (total) | 61 detects | 0.111 µg/L | 0.663 µg/L | 100 µg/LMCL | Within MCL |
| Radium-226/228 | 110 detects | 0 pCi/L | ND | 5 pCi/LMCL | Not detected |
| Total trihalomethanes (TTHM) | 109 | 11.241 µg/L | 52.9 µg/L | 80 µg/LMCL (LRAA) | Within MCL |
| Haloacetic acids (HAA5) | 108100 detects | 4.527 µg/L | 16.2 µg/L | 60 µg/LMCL (LRAA) | Within MCL |
| Lead (tap samples) | 15885 detects | 4.693 µg/L | 500 µg/L | 15 µg/Laction level (90th percentile) | Reported, not scored (compliance is on the 90th percentile) |
| Copper (tap samples) | 158 | 222.876 µg/L | 1500 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)
WASILLA WATER SYSTEM · 1,832 service lines inventoried · Q2 2026 snapshot
WASILLA WATER SYSTEM reports no lead or galvanized-requiring-replacement service lines and has classified 100% of its 1,832 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 AK2224646 · 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 Wasilla 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 Wasilla 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 Wasilla 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.
Wasilla ranks #9 of 10 graded Alaska cities.
Wasilla grades C. The water is legal to drink, but a certified filter matched to these findings is a reasonable precaution.
WASILLA WATER SYSTEM's most recent Lead and Copper Rule result (2022-01-01 to 2024-12-31) was 3.1 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.
Yes. EPA's UCMR5 sampling (2023-08-15 to 2024-03-18) detected PFHxS, all below federal MCLs. Reverse osmosis and certified activated-carbon filters reduce PFAS.
WASILLA WATER SYSTEM has 77 violations on file since 2016: 0 health-based in the last five years and 10 monitoring or reporting violations in that window. Monitoring violations are paperwork lapses, not measured contamination.
WASILLA WATER SYSTEM reports groundwater as its primary source and serves about 18,492 people (EPA PWSID AK2224646).
Optional but sensible. The findings on this page are below federal limits; an NSF-certified pitcher or under-sink filter handles PFAS, arsenic and improves taste.
PFHxS were detected in Wasilla's water at low levels in 2023–2025 EPA monitoring.
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Based on contaminants detected in your water, these resources may be helpful:
Find the right filter for your Wasilla water quality needs:
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