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Tap water quality report

St Helens, City of

EPA monitoring tested this supplier for 102 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
8
detected
13,410
people served
11
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Ground water under surface influence
Ownership
Local government
Counties served
Columbia

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.

11
health-based violations
66
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02
TT Health-based Resolved 2004-02-02

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0155 µg/L 3/4 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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
592 µg/L 46%
of the EPA limit 1300 µg/L
 86/90 SYR4 2013–2019
TTHM
31.7 µg/L 40%
of the EPA limit 80 µg/L
 83/83 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
9.6 µg/L 16%
of the EPA limit 60 µg/L
 55/83 SYR4 2012–2019
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
 18/90 SYR4 2013–2019
Nitrate
2800 µg/L 28%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0010 mg/L 6.9%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Nitrate-Nitrite
1600 µg/L 16%
of the EPA limit 10000 µg/L
 2/2 SYR4 2012
94 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ST HELENS, CITY OF
Phone
503-397-3532
Email
btupper@sthelensoregon.gov

Frequently asked questions about St Helens, City of

Is St Helens, City of tap water safe to drink?

EPA monitoring detected 8 contaminants in St Helens, City of'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 St Helens, City of's water?

EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Lead, Nitrate, and others. The full list with the level and data source for each is above.

How many people does St Helens, City of serve?

St Helens, City of reports serving 13,410 people in Oregon, per its EPA record.

Has St Helens, City of had any water quality violations?

The EPA has 66 violations on file for St Helens, City of, of which 11 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.