TapGraded
C

MODEL IRRIGATION DIST #18

Spokane, WA · 7,903 served

MODEL IRRIGATION DIST #18 serves 7,903 people in Spokane, WA. It has 0 health-based violations in the last 5 years. TapGraded gives this system a C.

Score breakdown

Health-based violations (5y)

0

Monitoring violations (5y)

2

Currently unaddressed

0

Overall score

76/100

Violation history (last 5 years)

2022
2024
Health-based Monitoring / reporting

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Lead (Lead and Copper Rule)

EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).

90th-percentile lead sample 2.1 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

HFPO-DA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFHxS (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFNA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFOA 4.2 ppt over limit
0 ppt EPA MCL: 4 ppt
PFOS (not detected) 0 ppt
0 ppt EPA MCL: 4 ppt

System details

System type
Community water system
Water source
Ground water
Ownership
Local government
Service connections
2,615

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Frequently asked questions

Is Spokane, WA tap water safe to drink?

MODEL IRRIGATION DIST #18 has 0 health-based violations in the last 5 years. TapGraded gives this system a C.

Does MODEL IRRIGATION DIST #18 have lead in its water?

The most recent 90th-percentile lead sample is 2.1 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in MODEL IRRIGATION DIST #18's water?

Yes — PFAS was detected at or above the EPA MCL for 1 of the tracked analytes.

Source: EPA SDWIS/ECHO · Data as of 2026Q2