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Tap water quality report

Yelm City of

EPA monitoring tested this supplier for 102 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
10
detected
17,355
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Thurston

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.

0
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2016-07-01
Other Monitoring Resolved 2015-07-01
Other Monitoring Resolved 2011-07-01
MR Monitoring Resolved 2006-10-01 → 2006-12-31
MR Monitoring Archived 2006-07-01 → 2006-09-30
Other Monitoring Resolved 1999-10-19 → 1999-12-31
MR Monitoring Archived 1995-02-01 → 1995-02-28
MR Monitoring Archived 1991-11-01 → 1991-11-30
MR Monitoring Archived 1979-10-01 → 1979-10-31

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
TTHM
28.66 µg/L 36%
of the EPA limit 80 µg/L
worst single sample: 31.9 µg/L
35/35 SYR4 2014–2019
Bromodichloromethane
6.635 µg/L
No EPA limit set
worst single sample: 7.1 µg/L
34/36 SYR4 2014–2019
Nitrate
4975 µg/L 50%
of the EPA limit 10000 µg/L
worst single sample: 5300 µg/L
34/34 SYR4 2012–2019
Chloroform
21.26 µg/L
No EPA limit set
worst single sample: 23.1 µg/L
33/35 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
12.14 µg/L 20%
of the EPA limit 60 µg/L
worst single sample: 13.4 µg/L
23/36 SYR4 2014–2019
Dibromochloromethane
1.69 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
22/26 SYR4 2014–2019
Trichloroacetic Acid
6.295 µg/L
No EPA limit set
worst single sample: 6.6 µg/L
22/36 SYR4 2014–2019
Dichloroacetic Acid
6.61 µg/L
No EPA limit set
worst single sample: 6.8 µg/L
20/33 SYR4 2014–2019
Lead
0.0019 mg/L 13%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2024
Nitrate-Nitrite
1190 µg/L 12%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
92 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
John Ivey

Frequently asked questions about Yelm City of

Is Yelm City of tap water safe to drink?

EPA monitoring detected 10 contaminants in Yelm 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 Yelm City of's water?

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

How many people does Yelm City of serve?

Yelm City of reports serving 17,355 people in Washington, per its EPA record.

Has Yelm City of had any water quality violations?

The EPA has 9 violations on file for Yelm City of, of which 0 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.