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Tap water quality report

Valley of the Horses Water Dist #12

EPA monitoring tested this supplier for 71 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
10
detected
70
people served
6
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
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.

6
health-based violations
227
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1992-12-01 → 1992-12-31
MCL Health-based Archived 1992-11-01 → 1992-11-30
MCL Health-based Archived 1992-06-01 → 1992-06-30
MCL Health-based Archived 1992-06-01 → 1992-06-30
MCL Health-based Archived 1992-06-01 → 1992-06-30
MR Monitoring Resolved 2016-01-01 → 2016-12-31
MR Monitoring Resolved 2015-01-01 → 2015-12-31
MR Monitoring Resolved 2007-07-01 → 2007-09-30
MR Monitoring Resolved 2007-07-01 → 2007-09-30

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
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Bromodichloromethane
1.598 µg/L
No EPA limit set
worst single sample: 1.63 µg/L
3/4 SYR4 2012–2017
Chloroform
1.618 µg/L
No EPA limit set
worst single sample: 1.67 µg/L
3/4 SYR4 2012–2017
Dibromochloromethane
1.091 µg/L
No EPA limit set
worst single sample: 1.11 µg/L
3/4 SYR4 2012–2017
TTHM
4.307 µg/L 5.4%
of the EPA limit 80 µg/L
worst single sample: 4.41 µg/L
3/3 SYR4 2014–2017
Barium
18.8 µg/L 0.9%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Copper
1.74 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/1 SYR4 2019
Dichloroacetic Acid
3.09 µg/L
No EPA limit set
 1/3 SYR4 2012–2017
Fluoride
240 µg/L 6%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Total Haloacetic Acids (HAA5)
3.09 µg/L 5.1%
of the EPA limit 60 µg/L
 1/3 SYR4 2012–2017
61 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Patricia Anderson

Frequently asked questions about Valley of the Horses Water Dist #12

Is Valley of the Horses Water Dist #12 tap water safe to drink?

EPA monitoring detected 10 contaminants in Valley of the Horses Water Dist #12'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 Valley of the Horses Water Dist #12's water?

EPA monitoring detected Lead, Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Valley of the Horses Water Dist #12 serve?

Valley of the Horses Water Dist #12 reports serving 70 people in Washington, per its EPA record.

Has Valley of the Horses Water Dist #12 had any water quality violations?

The EPA has 227 violations on file for Valley of the Horses Water Dist #12, of which 6 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.