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Tap water quality report

Columbia Water Co

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
25,200
people served
29
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Surface water
Ownership
Private
Counties served
Lancaster

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.

29
health-based violations
189
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2019-01-01 → 2019-03-31
TT Health-based Resolved 2016-04-01 → 2016-06-30
TT Health-based Resolved 2016-04-01 → 2016-06-30
TT Health-based Resolved 2016-04-01 → 2016-06-30
TT Health-based Resolved 2016-04-01 → 2016-06-30
TT Health-based Resolved 2016-01-01 → 2016-03-31

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
Chloroform
65.26 µg/L
No EPA limit set
worst single sample: 94.2 µg/L
129/129 SYR4 2012–2019
TTHM
82.92 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 126 µg/L
129/129 SYR4 2012–2019
Bromodichloromethane
16.66 µg/L
No EPA limit set
worst single sample: 23.1 µg/L
128/129 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
53.34 µg/L 89%
of the EPA limit 60 µg/L
worst single sample: 78.4 µg/L
125/128 SYR4 2012–2019
Dibromochloromethane
7.285 µg/L
No EPA limit set
worst single sample: 8.6 µg/L
124/129 SYR4 2012–2019
Copper
480.7 µg/L 37%
of the EPA limit 1300 µg/L
worst single sample: 1100 µg/L
95/95 SYR4 2013–2019
Nitrate
6080 µg/L 61%
of the EPA limit 10000 µg/L
worst single sample: 6200 µg/L
60/62 SYR4 2012–2019
Dichloroacetic Acid
24.78 µg/L
No EPA limit set
worst single sample: 30.9 µg/L
19/20 SYR4 2018–2019
Trichloroacetic Acid
29.4 µg/L
No EPA limit set
worst single sample: 42 µg/L
19/20 SYR4 2018–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
Lead
14 µg/L 93%
of the EPA limit 15 µg/L
 18/95 SYR4 2013–2019
Bromoform
1.335 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
14/129 SYR4 2012–2019
Barium
45 µg/L 2.3%
of the EPA limit 2000 µg/L
worst single sample: 48 µg/L
13/13 SYR4 2012–2019
Monochloroacetic Acid
5.27 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
3/20 SYR4 2018–2019
Dibromoacetic Acid
1.166 µg/L
No EPA limit set
worst single sample: 1.17 µg/L
2/20 SYR4 2018–2019
Fluoride
110 µg/L 2.8%
of the EPA limit 4000 µg/L
 1/10 SYR4 2012–2019
Mercury
0.3800 µg/L 19%
of the EPA limit 2 µg/L
 1/10 SYR4 2012–2019
92 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DAVID LEWIS, GE
Phone
717-684-2188

Frequently asked questions about Columbia Water Co

Is Columbia Water Co tap water safe to drink?

EPA monitoring detected 17 contaminants in Columbia Water Co'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 Columbia Water Co's water?

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

How many people does Columbia Water Co serve?

Columbia Water Co reports serving 25,200 people in Pennsylvania, per its EPA record.

Has Columbia Water Co had any water quality violations?

The EPA has 189 violations on file for Columbia Water Co, of which 29 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.