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Tap water quality report

South Davis Water District

EPA monitoring tested this supplier for 107 contaminants and detected 28. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

107
contaminants tested
28
detected
10,565
people served
21
health-based violations
Utah rankingsLead in UtahPFAS in Utah
Water source
SWP
Ownership
Local government
Counties served
Davis

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.

21
health-based violations
43
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14
TT Health-based Resolved 2010-01-14

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFHXS 0.0120 µg/L 6/10 2023
Pfhxa 0.0046 µg/L 4/10 2023
Pfpea 0.0056 µg/L 4/10 2023
PFBS 0.0031 µg/L 1/10 2023

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
Copper
530.54 µg/L 41%
of the EPA limit 1300 µg/L
worst single sample: 613.5 µg/L
80/80 SYR4 2013–2019
Lead
4.175 µg/L 28%
of the EPA limit 15 µg/L
worst single sample: 25 µg/L
76/80 SYR4 2013–2019
Nitrate
3525 µg/L 35%
of the EPA limit 10000 µg/L
worst single sample: 3600 µg/L
76/76 SYR4 2012–2019
TTHM
64.1 µg/L 80%
of the EPA limit 80 µg/L
worst single sample: 66.3 µg/L
39/39 SYR4 2012–2019
Bromodichloromethane
12.84 µg/L
No EPA limit set
worst single sample: 15.5 µg/L
37/44 SYR4 2012–2019
Dibromochloromethane
11.6 µg/L
No EPA limit set
worst single sample: 12.7 µg/L
37/44 SYR4 2012–2019
Chloroform
46.7 µg/L
No EPA limit set
worst single sample: 53.4 µg/L
36/44 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.975 µg/L 37%
of the EPA limit 60 µg/L
worst single sample: 30.4 µg/L
36/39 SYR4 2012–2019
Bromoform
5.75 µg/L
No EPA limit set
worst single sample: 6.9 µg/L
31/44 SYR4 2012–2019
Dichloroacetic Acid
7.5 µg/L
No EPA limit set
worst single sample: 10.7 µg/L
29/37 SYR4 2012–2019
Trichloroacetic Acid
18.14 µg/L
No EPA limit set
worst single sample: 20.9 µg/L
25/37 SYR4 2012–2019
Fluoride
700 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 790 µg/L
22/23 SYR4 2013–2019
Lead
0.0086 mg/L 57%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2024
Dibromoacetic Acid
5.345 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
20/37 SYR4 2012–2019
Barium
395.65 µg/L 20%
of the EPA limit 2000 µg/L
worst single sample: 406 µg/L
10/10 SYR4 2013–2019
Selenium
4.485 µg/L 9%
of the EPA limit 50 µg/L
worst single sample: 4.8 µg/L
10/10 SYR4 2013–2019
Arsenic
2.34 µg/L 23%
of the EPA limit 10 µg/L
worst single sample: 2.5 µg/L
9/9 SYR4 2013–2019
Cyanide
7.66 µg/L 3.8%
of the EPA limit 200 µg/L
worst single sample: 8.1 µg/L
9/10 SYR4 2013–2019
Gross Beta Particle Activity
9.36 pCi/L
No EPA limit set
worst single sample: 10 pCi/L
5/6 SYR4 2013–2019
Lithium
23 µg/L
No EPA limit set
 5/10 UCMR-5 2023
Nitrate-Nitrite
3410 µg/L 34%
of the EPA limit 10000 µg/L
worst single sample: 3500 µg/L
4/4 SYR4 2013
Gross Alpha, Excl. Radon And U
6.14 pCi/L 41%
of the EPA limit 15 pCi/L
worst single sample: 6.2 pCi/L
3/6 SYR4 2013–2019
Combined Radium (-226 And -228)
1.28 pCi/L 26%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/37 SYR4 2012–2019
79 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FERGUSON, JAKE MICHAEL
Phone
801-295-4468
Email
[email protected]

Frequently asked questions about South Davis Water District

Is South Davis Water District tap water safe to drink?

EPA monitoring detected 28 contaminants in South Davis Water District'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 South Davis Water District's water?

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

How many people does South Davis Water District serve?

South Davis Water District reports serving 10,565 people in Utah, per its EPA record.

Has South Davis Water District had any water quality violations?

The EPA has 43 violations on file for South Davis Water District, of which 21 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.