TABLE 1.

Locations, dates, and characteristics of samples from the River Tywi, FWTW, and domestic properties in South Wales

Sample site	Name	UK Ordnance Survey grid reference	Sample type	Sample date (day/mo/yr or mo/yr)	IS900 PCR status	SNP at position 216a
1	Llyn Brianne reservoir	SN796489	Sediment	29/09/02	−
2	R Gallt y bere, upper Tywi	SN773459	Epilithon	29/10/02	−
3	Sewage treatment works, upper Tywi	SN766380	Effluent	29/10/02	−
4	Llandovery bridge	SN761347	Epilithon	29/10/02	−
5	Sewage treatment works, Llandielo	SN610213	Effluent	29/10/02	−
6	River Cothi	SN525231	Water (10 liters)	29/10/02	+	ND
7	River Cothi	SN523229	Water (10 liters)	29/10/02	+	ND
8	River Tywi	SN508201	Water (10 liters)	29/10/02	+	ND
9	Nantgaredig Bridge	SN494204	Water (10 liters twice wkly)	08/02-04/03	+ (48 of 70)	13 sequenced     (4-A, 9-G)
10	River Tywi abstraction site	SN488205	Sediment	29/10/02	+	G
11	Abstraction pump house screening grill	SN488204	Sediment	29/10/02	+	ND
	Abstraction pump house screening grill	SN488204	Epilithon	29/10/02	+
12	Lower Lliw water treatment works holding reservoir	SN648036	Sediment	29/10/02	−
13	FWTW inflow channel	SN648036	Epilithon	29/10/02	−
14	FWTW	SN649032	Suspended solids	29/10/02	+	ND
15	FWTW	SN649032	Finished water	29/10/02	−
16	Felindre sludge lagoon	SN649032	Suspended solids	29/10/02	+	G
17	Domestic properties		Tank sediments	08/03	+ (1 of 54)	ND

^aND, not determined.