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Tap water quality report

Santiago Water Association

EPA monitoring tested this supplier for 81 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
6
detected
95
people served
8
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private

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.

8
health-based violations
123
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-08-01 → 2015-08-31
TT Health-based Resolved 2014-11-30
TT Health-based Resolved 2014-11-30
TT Health-based Resolved 2014-11-30
TT Health-based Resolved 2014-11-30
TT Health-based Resolved 2014-11-30
TT Health-based Resolved 2014-11-30
MCL Health-based Resolved 2005-03-01 → 2005-03-31
MR Monitoring Resolved 2024-12-01 → 2024-12-31
MR Monitoring Resolved 2024-12-01 → 2024-12-31

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
29.625 µg/L 198%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 73.7 µg/L
26/32 SYR4 2013–2019
Copper
469.8 µg/L 36%
of the EPA limit 1300 µg/L
worst single sample: 617 µg/L
25/32 SYR4 2013–2019
Lead
0.0099 mg/L 66%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 2/2 SYR4 2013–2016
Barium
40 µg/L 2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
75 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TERRY, GENE
Phone
360-276-8376
Email
[email protected]

Frequently asked questions about Santiago Water Association

Is Santiago Water Association tap water safe to drink?

EPA monitoring detected 6 contaminants in Santiago Water Association'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 Santiago Water Association's water?

EPA monitoring detected Lead, Copper, Lead, Combined Radium (-226 And -228), Barium, and others. The full list with the level and data source for each is above.

How many people does Santiago Water Association serve?

Santiago Water Association reports serving 95 people in Washington, per its EPA record.

Has Santiago Water Association had any water quality violations?

The EPA has 123 violations on file for Santiago Water Association, of which 8 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.