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Tap water quality report

Green Tank Irr District 11

EPA monitoring tested this supplier for 63 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

63
contaminants tested
3
detected
553
people served
2
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Walla Walla

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.

2
health-based violations
522
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-06-01 → 2010-06-30
MCL Health-based Archived 2004-03-01 → 2004-03-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31

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
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Barium
52.94 µg/L 2.6%
of the EPA limit 2000 µg/L
worst single sample: 54 µg/L
3/3 SYR4 2013–2014
Fluoride
638.5 µg/L 16%
of the EPA limit 4000 µg/L
worst single sample: 640 µg/L
2/3 SYR4 2013–2014
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitrateNitrate-NitriteNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Curtis Skifstad

Frequently asked questions about Green Tank Irr District 11

Is Green Tank Irr District 11 tap water safe to drink?

EPA monitoring detected 3 contaminants in Green Tank Irr District 11'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 Green Tank Irr District 11's water?

EPA monitoring detected Lead, Barium, Fluoride. The full list with the level and data source for each is above.

How many people does Green Tank Irr District 11 serve?

Green Tank Irr District 11 reports serving 553 people in Washington, per its EPA record.

Has Green Tank Irr District 11 had any water quality violations?

The EPA has 522 violations on file for Green Tank Irr District 11, of which 2 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.