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Local water dashboard

Official source aggregation

Water quality in Mcgrath, AK 99627

A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Yukon-Koyukuk Census Area.

2 reported benchmark flags
Primary matched system
Mcgrath Water System
Source water
Surface water
County
Yukon-Koyukuk Census Area
Profile updated

At a glance

What the current records say

Hardness

Unavailable

No qualifying site within 75 miles

Compliance screen

No active flag

0 active health-based records

Lead 90th percentile

9.0e-4 mg/L

6% of action level

Utility match

1 system

Serves 341 people system-wide

Hardness estimate unavailable

No responsible local estimate yet

We did not find enough qualifying recent USGS hardness observations within 75 miles of this ZIP centroid. We leave the value blank instead of substituting a state average. Ask the serving utility or test the household tap for a property-specific result.

EPA benchmark screen

Contaminant snapshot

Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.

1 pass2 fail

Lead (PB90)

9.0e-4 mg/L

Reported Dec 31, 2023

Copper (CU90)

Not available

No numerical 90th-percentile result

Numerical coverage

3 comparable results

Missing values remain blank; absence is not treated as a pass.

Lead (90th percentile)

Measured in mg/L

Pass

Local 9.0e-4

EPA limit 0.015

Local level is 6% of the listed EPA limit.

Total Haloacetic Acids (HAA5)

Measured in MG/L

Fail

Local 0.064

EPA limit 0.06

Local level is 107% of the listed EPA limit.

TTHM

Measured in MG/L

Fail

Local 0.081

EPA limit 0.08

Local level is 101% of the listed EPA limit.

Share of EPA benchmark

100% line = listed limit

EPA SDWIS compliance

Reported violation history

Open EPA source documentation ↗
2026Q2
All records
45
Health-based
8
Active health-based
0
Contaminant or ruleSystemStatusPeriod
Total Haloacetic Acids (HAA5)Health-basedReported 0.064 MG/L · MCL 0.06AK2280155ResolvedJul 1, 2025through Sep 30, 2025
Interim Enhanced Surface Water Treatment RuleAK2280155ResolvedJul 1, 2025through Jul 31, 2025
Surface Water Treatment RuleAK2280155ResolvedJul 1, 2025through Jul 31, 2025
ChlorineAK2280155ResolvedMar 1, 2025through Mar 31, 2025
Surface Water Treatment RuleAK2280155ResolvedMar 1, 2025through Mar 31, 2025
Public NoticeAK2280155ResolvedDec 28, 2024through Mar 5, 2025
Surface Water Treatment RuleAK2280155ResolvedDec 1, 2024through Dec 31, 2024
Interim Enhanced Surface Water Treatment RuleAK2280155ResolvedDec 1, 2024through Dec 31, 2024
CARBON, TOTALHealth-basedReported 0.03 RATIOAK2280155ResolvedJul 1, 2024through Sep 30, 2024
ChlorineAK2280155ResolvedApr 1, 2024through Apr 30, 2024
CARBON, TOTALHealth-basedReported 0.91 RATIOAK2280155ResolvedApr 1, 2024through Jun 30, 2024
CARBON, TOTALHealth-basedReported 0.96 RATIOAK2280155ResolvedJan 1, 2024through Mar 31, 2024
CARBON, TOTALAK2280155ResolvedJul 1, 2023through Aug 23, 2023
TTHMHealth-basedReported 0.081 MG/L · MCL 0.08AK2280155ResolvedJul 1, 2023through Sep 30, 2023
Surface Water Treatment RuleAK2280155ResolvedJun 1, 2023through Jun 30, 2023
Interim Enhanced Surface Water Treatment RuleAK2280155ResolvedJun 1, 2023through Jun 30, 2023
Total Haloacetic Acids (HAA5)AK2280155ResolvedFeb 14, 2023through Feb 15, 2023
TTHMAK2280155ResolvedFeb 14, 2023through Feb 15, 2023
Revised Total Coliform RuleAK2280155ResolvedJul 1, 2022through Jul 31, 2022
ChlorineAK2280155ResolvedJul 1, 2022through Sep 26, 2022

No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.

Solutions matcher

Your personalized water action plan

Matched to Mcgrath ZIP 99627 using available compliance data and 3 reported measurement benchmarks.

1 match

Drinking water protection

Under-Sink Reverse Osmosis System

Total Haloacetic Acids (HAA5), TTHM have a measured benchmark flag or active health-based SDWIS record in this profile.

A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.

Explore under-sink filtration

Affiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.

Frequently asked

Water questions for Mcgrath

Is tap water safe in Mcgrath?+

EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.

How hard is the water?+

There are not enough qualifying nearby USGS observations for a responsible hardness estimate. Ask the serving utility or test the household tap.

Do I need a water softener?+

There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.