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Tap water quality report

Poway, City of

EPA monitoring tested this supplier for 112 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

112
contaminants tested
21
detected
49,888
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
San Diego

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
1
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 1993-06-30 → 2000-03-01

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
Bromodichloromethane
21.825 µg/L
No EPA limit set
worst single sample: 24.7 µg/L
216/216 SYR4 2012–2019
Chloroform
21.875 µg/L
No EPA limit set
worst single sample: 42.9 µg/L
216/216 SYR4 2012–2019
TTHM
65.275 µg/L 82%
of the EPA limit 80 µg/L
worst single sample: 77.6 µg/L
216/216 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
28 µg/L 47%
of the EPA limit 60 µg/L
worst single sample: 35.2 µg/L
216/216 SYR4 2012–2019
Trichloroacetic Acid
9.7 µg/L
No EPA limit set
worst single sample: 11.9 µg/L
216/216 SYR4 2012–2019
Dichloroacetic Acid
13.96 µg/L
No EPA limit set
worst single sample: 17.4 µg/L
215/216 SYR4 2012–2019
Dibromochloromethane
21.4 µg/L
No EPA limit set
worst single sample: 51.3 µg/L
213/216 SYR4 2012–2019
Dibromoacetic Acid
8.173 µg/L
No EPA limit set
worst single sample: 13 µg/L
210/216 SYR4 2012–2019
Bromoform
9.1275 µg/L
No EPA limit set
worst single sample: 45.3 µg/L
202/216 SYR4 2012–2019
Monobromoacetic Acid
4.3445 µg/L
No EPA limit set
worst single sample: 7.88 µg/L
62/216 SYR4 2012–2019
Monochloroacetic Acid
7.551 µg/L
No EPA limit set
worst single sample: 12.2 µg/L
40/216 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Fluoride
342.6 µg/L 8.6%
of the EPA limit 4000 µg/L
worst single sample: 358 µg/L
8/8 SYR4 2012–2019
Arsenic
2.134 µg/L 21%
of the EPA limit 10 µg/L
worst single sample: 2.14 µg/L
4/8 SYR4 2012–2019
Lithium
48.7 µg/L
No EPA limit set
 4/4 UCMR-5 2025
Combined Uranium
4.84846 µg/L 16%
of the EPA limit 30 µg/L
worst single sample: 5.0213 µg/L
3/3 SYR4 2012–2014
Gross Beta Particle Activity
6.594 pCi/L
No EPA limit set
worst single sample: 7.1 pCi/L
3/3 SYR4 2012–2014
Nitrate
212 µg/L 2.1%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Barium
105 µg/L 5.3%
of the EPA limit 2000 µg/L
 1/8 SYR4 2012–2019
Combined Radium (-226 And -228)
0.4600 pCi/L 9.2%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Dichloromethane
2.45 µg/L 49%
of the EPA limit 5 µg/L
 1/8 SYR4 2012–2019
91 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HEIDEMANN, ERIC
Phone
858-668-4716
Email
[email protected]

Frequently asked questions about Poway, City of

Is Poway, City of tap water safe to drink?

EPA monitoring detected 21 contaminants in Poway, 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 Poway, City of's water?

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

How many people does Poway, City of serve?

Poway, City of reports serving 49,888 people in California, per its EPA record.

Has Poway, City of had any water quality violations?

The EPA has 1 violation on file for Poway, 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.