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Tap water quality report

Model Irrigation Dist #18

EPA monitoring tested this supplier for 94 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

94
contaminants tested
11
detected
7,903
people served
17
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Spokane

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

17
health-based violations
204
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-10-01 → 2000-10-31
MCL Health-based Archived 2000-10-01 → 2000-10-31
MCL Health-based Archived 2000-10-01 → 2000-10-31
MCL Health-based Archived 2000-06-01 → 2000-06-30
MCL Health-based Archived 2000-06-01 → 2000-06-30
MCL Health-based Archived 2000-06-01 → 2000-06-30
MCL Health-based Archived 1999-02-01 → 1999-02-28
MCL Health-based Archived 1999-02-01 → 1999-02-28
MCL Health-based Archived 1999-02-01 → 1999-02-28
MCL Health-based Archived 1999-01-01 → 1999-01-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0030 µg/L 1/6 2025
Pfhxa 0.0039 µg/L 1/6 2025
PFOA 0.0042 µg/L 1/6 2025
Pfpea 0.0058 µg/L 1/6 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
5300 µg/L 53%
of the EPA limit 10000 µg/L
worst single sample: 5700 µg/L
126/130 SYR4 2012–2019
Lead
0.0021 mg/L 14%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Arsenic
4.2975 µg/L 43%
of the EPA limit 10 µg/L
worst single sample: 4.37 µg/L
6/6 SYR4 2019
Barium
106.5 µg/L 5.3%
of the EPA limit 2000 µg/L
worst single sample: 108 µg/L
6/6 SYR4 2019
Nitrate-Nitrite
3907.5 µg/L 39%
of the EPA limit 10000 µg/L
worst single sample: 4000 µg/L
6/6 SYR4 2019
Copper
2.55 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/6 SYR4 2019
Lithium
10 µg/L
No EPA limit set
 1/6 UCMR-5 2025
83 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Ryan Neal

Frequently asked questions about Model Irrigation Dist #18

Is Model Irrigation Dist #18 tap water safe to drink?

EPA monitoring detected 11 contaminants in Model Irrigation Dist #18's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Model Irrigation Dist #18's water?

EPA monitoring detected Nitrate, Lead, Arsenic, Barium, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.

How many people does Model Irrigation Dist #18 serve?

Model Irrigation Dist #18 reports serving 7,903 people in Washington, per its EPA record.

Has Model Irrigation Dist #18 had any water quality violations?

The EPA has 204 violations on file for Model Irrigation Dist #18, of which 17 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.